class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader1, self.train_loader2, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(
Path.db_root_dir(args.dataset),
args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
# Define network
model = AutoDeeplab(21, 12, self.criterion)
optimizer = torch.optim.SGD(model.parameters(),
args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay)
self.model, self.optimizer = model, optimizer
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
print('cuda finished')
# Define Optimizer
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader1))
self.architect = Architect(self.model, args)
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader1)
num_img_tr = len(self.train_loader1)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
search = next(iter(self.train_loader2))
image_search, target_search = search['image'], search['label']
# print ('------------------------begin-----------------------')
if self.args.cuda:
image, target = image.cuda(), target.cuda()
image_search, target_search = image_search.cuda(
), target_search.cuda()
# print ('cuda finish')
self.architect.step(image_search, target_search)
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(),
i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset,
image, target, output,
global_step)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(
Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
if not args.test:
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
if self.args.norm == 'gn':
norm = gn
elif self.args.norm == 'bn':
if self.args.sync_bn:
norm = syncbn
else:
norm = bn
elif self.args.norm == 'abn':
if self.args.sync_bn:
norm = syncabn(self.args.gpu_ids)
else:
norm = abn
else:
print("Please check the norm.")
exit()
# Define network
if self.args.model =='deeplabv3+':
model = DeepLab(args=self.args,
num_classes=self.nclass,
freeze_bn=args.freeze_bn)
elif self.args.model =='deeplabv3':
model = DeepLabv3(Norm=self.args.norm,
backbone=args.backbone,
output_stride=args.out_stride,
num_classes=self.nclass,
freeze_bn=args.freeze_bn)
elif self.args.model == 'fpn':
model = FPN (
args=args,
num_classes=self.nclass
)
'''
model.cuda()
summary(model, input_size=(3, 720, 1280))
exit()
'''
train_params = [{'params': model.get_1x_lr_params(), 'lr': args.lr},
{'params': model.get_10x_lr_params(), 'lr': args.lr * 10}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params, momentum=args.momentum,
weight_decay=args.weight_decay, nesterov=args.nesterov)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(Path.db_root_dir(args.dataset), args.dataset+'_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset, self.train_loader, self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr,
args.epochs, len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model, device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'" .format(args.resume))
checkpoint = torch.load(args.resume)
if args.ft:
args.start_epoch = 0
else:
args.start_epoch = checkpoint['epoch']
if args.cuda:
#self.model.module.load_state_dict(checkpoint['state_dict'])
pretrained_dict = checkpoint['state_dict']
model_dict = {}
state_dict = self.model.module.state_dict()
for k, v in pretrained_dict.items():
if k in state_dict:
model_dict[k] = v
state_dict.update(model_dict)
self.model.module.load_state_dict(state_dict)
else:
#self.model.load_state_dict(checkpoint['state_dict'])
pretrained_dict = checkpoint['state_dict']
model_dict = {}
state_dict = self.model.state_dict()
for k, v in pretrained_dict.items():
if k in state_dict:
model_dict[k] = v
state_dict.update(model_dict)
self.model.load_state_dict(state_dict)
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
elif args.decoder is not None:
if not os.path.isfile(args.decoder):
raise RuntimeError("=> no checkpoint for decoder found at '{}'" .format(args.decoder))
checkpoint = torch.load(args.decoder)
args.start_epoch = 0 # As every time loads decoder only should be finetuning
if args.cuda:
decoder_dict = checkpoint['state_dict']
model_dict = {}
state_dict = self.model.module.state_dict()
for k, v in decoder_dict.items():
if not 'aspp' in k:
continue
if k in state_dict:
model_dict[k] = v
state_dict.update(model_dict)
self.model.module.load_state_dict(state_dict)
else:
raise NotImplementedError("Please USE CUDA!!!")
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
continue
#self.writer.add_scalar('train/total_loss_iter', loss.item(), i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
'''
if i % (num_img_tr // 10) == 0 and False:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset, image, target, output, global_step)
'''
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch, inference=False):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
# init D
model_D = FCDiscriminator(num_classes=19)
train_params = [{
'params': model.get_1x_lr_params(),
'lr': args.lr
}, {
'params': model.get_10x_lr_params(),
'lr': args.lr * 10
}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov=args.nesterov)
optimizer_D = torch.optim.Adam(model_D.parameters(),
lr=1e-4,
betas=(0.9, 0.99))
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = 'dataloders\\datasets\\' + args.dataset + '_classes_weights.npy'
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.bce_loss = torch.nn.BCEWithLogitsLoss()
self.model, self.optimizer = model, optimizer
self.model_D, self.optimizer_D = model_D, optimizer_D
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
self.model_D = torch.nn.DataParallel(self.model_D,
device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
patch_replication_callback(self.model_D)
self.model = self.model.cuda()
self.model_D = self.model_D.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
# labels for adversarial training
source_label = 0
target_label = 1
loss_seg_value = 0.0
loss_adv_target_value = 0.0
loss_D_value = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
src_image, src_label, tgt_image = sample['src_image'], sample[
'src_label'], sample['tgt_image']
if self.args.cuda:
src_image, src_label, tgt_image = src_image.cuda(
), src_label.cuda(), tgt_image.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
self.scheduler(self.optimizer_D, i, epoch, self.best_pred)
self.optimizer_D.zero_grad()
## train G
# don't accumulate grads in D
for param in self.model_D.parameters():
param.requires_grad = False
# train with source
src_output = self.model(src_image)
loss_seg = self.criterion(src_output, src_label)
loss_seg.backward()
loss_seg_value += loss_seg.item()
# train with target
tgt_output = self.model(tgt_image)
D_out = self.model_D(F.softmax(tgt_output, dim=0))
loss_adv_target = self.bce_loss(
D_out,
Variable(
torch.FloatTensor(
D_out.data.size()).fill_(source_label)).cuda())
loss_adv_target.backward()
loss_adv_target_value += loss_adv_target.item()
## train D
# bring back requires_grad
for param in self.model_D.parameters():
param.requires_grad = True
# train with source
src_output = src_output.detach()
D_out = self.model_D(F.softmax(src_output, dim=0))
loss_D = self.bce_loss(
D_out,
Variable(
torch.FloatTensor(
D_out.data.size()).fill_(source_label)).cuda())
loss_D.backward()
loss_D_value += loss_D.item()
# train with source
tgt_output = tgt_output.detach()
D_out = self.model_D(F.softmax(tgt_output, dim=0))
loss_D = self.bce_loss(
D_out,
Variable(
torch.FloatTensor(
D_out.data.size()).fill_(target_label)).cuda())
loss_D.backward()
loss_D_value += loss_D.item()
self.optimizer.step()
self.optimizer_D.step()
tbar.set_description(
'Seg_loss: %.3f d_loss: %.3f d_inv_loss: %.3f' %
(loss_seg_value / (i + 1), loss_adv_target_value /
(i + 1), loss_D_value / (i + 1)))
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
image = torch.cat([src_image, tgt_image], dim=0)
output = torch.cat([src_output, tgt_output], dim=0)
self.summary.visualize_image(self.writer, self.args.dataset,
image, src_label, output,
global_step)
self.writer.add_scalar('train/Seg_loss', loss_seg_value, epoch)
self.writer.add_scalar('train/d_loss', loss_adv_target_value, epoch)
self.writer.add_scalar('train/d_inv_loss', loss_D_value, epoch)
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' %
(loss_seg_value + loss_adv_target_value + loss_D_value))
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU, _ = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(
Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
# train_params = [{'params': model.get_1x_lr_params(), 'lr': args.lr},
# {'params': model.get_10x_lr_params(), 'lr': args.lr * 10}]
train_params = [{'params': model.get_1x_lr_params(), 'lr': args.lr},
{'params': model.get_10x_lr_params(), 'lr': args.lr}]
# Define Optimizer
# optimizer = torch.optim.SGD(train_params, momentum=args.momentum,
# weight_decay=args.weight_decay, nesterov=args.nesterov)
optimizer = torch.optim.Adam(train_params,lr=args.lr,weight_decay=args.weight_decay,amsgrad=True)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(Path.db_root_dir(args.dataset), args.dataset+'_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset, self.train_loader, self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr,
args.epochs, len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model, device_ids=self.args.gpu_ids)
#self.model = self.model.to(torch.device('cuda'))
#model.to(device)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# if next(model.parameters()).is_cuda:
# print(" ***************** it is running on cuda *****************")
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'" .format(args.resume))
checkpoint = torch.load(args.resume)
#args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
# trying to save a checkpoint and check if it exists...
# import os
# cur_path = os.path.dirname(os.path.abspath('.'))
# print('saving mycheckpoint in:' + cur_path )
# checkpoint_name = 'mycheckpoint.pth.tar'
# save_path = cur_path + '/' + checkpoint_name
# torch.save(self.model.module.state_dict(), save_path)
# assert(os.path.isfile(save_path))
# # torch.save(self.model.module.state_dict(), checkpoint_name)
# # assert(os.path.isfile(cur_path + '/' + checkpoint_name))
# print('checkpoint saved ok')
# # checkpoint saved
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
#pdb.set_trace()
self.optimizer.zero_grad()
output = self.model(image)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(), i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset, image, target, output, global_step)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
if self.args.no_val:
# save checkpoint every epoch
# print('saving checkpoint')
is_best = False
#model = model.to(torch.device('cuda'))
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
#model.to(torch.device('cuda'))
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
# Define network
model = MyDeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
freeze_bn=args.freeze_bn)
self.model = model
train_params = [{'params': model.get_1x_lr_params(), 'lr': args.lr},
{'params': model.get_10x_lr_params(), 'lr': args.lr * 10}]
# Define Optimizer
#optimizer = torch.optim.SGD(train_params, momentum=args.momentum,
# weight_decay=args.weight_decay, nesterov=args.nesterov)
# adam
optimizer = torch.optim.Adam(params=self.model.parameters(),betas=(0.9, 0.999),
eps=1e-08, weight_decay=0, amsgrad=False)
weight = [1, 10, 10, 10, 10, 10, 10, 10]
weight = torch.tensor(weight, dtype=torch.float)
self.criterion = SegmentationLosses(weight=weight, cuda=args.cuda, num_classes=self.nclass).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr,
args.epochs, len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model, device_ids=self.args.gpu_ids)
#patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'" .format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
'''
# 获取当前模型各层的名称
layer_name = list(self.model.state_dict().keys())
#print(self.model.state_dict()[layer_name[3]])
# 加载通用的预训练模型
pretrained = './pretrained_model/deeplab-mobilenet.pth.tar'
pre_ckpt = torch.load(pretrained)
key_name = list(checkpoint['state_dict'].keys()) # 获取预训练模型各层的名称
pre_ckpt['state_dict'][key_name[-2]] = checkpoint['state_dict'][key_name[-2]] # 类别不同,最后两层单独赋值
pre_ckpt['state_dict'][key_name[-1]] = checkpoint['state_dict'][key_name[-1]]
self.model.module.load_state_dict(pre_ckpt['state_dict']) # , strict=False)
#print(self.model.state_dict()[layer_name[3]])
print("加载预训练模型ok")
'''
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
#import pdb
#pdb.set_trace()
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
#if (i+1) % 50 == 0:
# print('Train loss: %.3f' % (loss.item() / (i + 1)))
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(), i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
#self.summary.visualize_image(self.writer, self.args.dataset, image, target, output, global_step)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
filename='checkpoint_{}_{:.4f}.pth.tar'.format(epoch, train_loss)
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best, filename=filename)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
#if (i+1) %20 == 0:
# print('Test loss: %.3f' % (loss / (i + 1)))
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class MyTrainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
if (args.dataset == "fashion_clothes"):
train_set = fashion.FashionDataset(
args, Path.db_root_dir("fashion_clothes"), mode='train')
val_set = fashion.FashionDataset(
args, Path.db_root_dir("fashion_clothes"), mode='test')
self.nclass = train_set.nclass
print("Train size {}, val size {}".format(len(train_set),
len(val_set)))
self.train_loader = DataLoader(dataset=train_set,
batch_size=args.batch_size,
shuffle=True,
**kwargs)
self.val_loader = DataLoader(dataset=val_set,
batch_size=args.batch_size,
shuffle=False,
**kwargs)
self.test_loader = None
assert self.nclass == 7
self.best_pred = 0.0
if args.model == 'deeplabv3+':
model = DeepLab(backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
if args.cuda:
checkpoint = torch.load(args.resume)
else:
checkpoint = torch.load(args.resume, map_location='cpu')
args.start_epoch = checkpoint['epoch']
model.load_state_dict(checkpoint['state_dict'])
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
#Freeze the backbone
if args.freeze_backbone:
set_parameter_requires_grad(model.backbone, False)
######NEW DECODER######
#Different type of FT
if args.ft_type == 'decoder':
set_parameter_requires_grad(model, False)
model.decoder = build_decoder(self.nclass, 'resnet',
nn.BatchNorm2d)
train_params = [{
'params': model.get_1x_lr_params(),
'lr': args.lr
}, {
'params': model.get_10x_lr_params(),
'lr': args.lr * 10
}]
elif args.ft_type == 'last_layer':
set_parameter_requires_grad(model, False)
model.decoder.last_conv[8] = nn.Conv2d(
in_channels=256, out_channels=self.nclass, kernel_size=1)
model.decoder.last_conv[8].reset_parameters()
train_params = [{
'params': model.get_1x_lr_params(),
'lr': args.lr
}, {
'params': model.get_10x_lr_params(),
'lr': args.lr * 10
}]
if args.ft_type == 'all':
#Reset last layer, to generate output we want
model.decoder.last_conv[8] = nn.Conv2d(
in_channels=256, out_channels=self.nclass, kernel_size=1)
model.decoder.last_conv[8].reset_parameters()
train_params = [{
'params': model.get_1x_lr_params(),
'lr': args.lr
}, {
'params': model.get_10x_lr_params(),
'lr': args.lr * 10
}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov=args.nesterov)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
weight = calculate_weigths_labels(args.dataset, self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
print("weight is {}".format(weight))
else:
weight = None
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader))
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(),
i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset,
image, target, output,
global_step)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(
Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def visulize_validation(self):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
#current_index_val_set
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
#we have image, target, output on GPU
#j, index of image in batch
self.summary.visualize_pregt(self.writer, self.args.dataset, image,
target, output, i)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Visualizing:')
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
print('Final Validation:')
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(
Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
def output_validation(self):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
#current_index_val_set
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
#we have image, target, output on GPU
#j, index of image in batch
#image save
self.summary.save_pred(self.args.dataset, output, i)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Visualizing:')
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
print('Final Validation:')
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(
Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
def train_loop(self):
try:
for epoch in range(self.args.start_epoch, self.args.epochs):
self.training(epoch)
if not self.args.no_val and epoch % self.args.eval_interval == (
self.args.eval_interval - 1):
self.validation(epoch)
except KeyboardInterrupt:
print('Early Stopping')
finally:
self.visulize_validation()
self.writer.close()
class Evaluation(object):
def __init__(self, args):
self.args = args
# Define Dataloader
kwargs = {
'num_workers': args.workers,
'pin_memory': True,
'drop_last': True
}
_, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
if args.network == 'searched_dense':
""" 40_5e_lr_38_31.91 """
cell_path = os.path.join(args.saved_arch_path, 'autodeeplab',
'genotype.npy')
cell_arch = np.load(cell_path)
network_arch = [0, 1, 2, 3, 2, 2, 2, 2, 1, 2, 3, 2]
low_level_layer = 0
model = Model_2(network_arch, cell_arch, self.nclass, args,
low_level_layer)
elif args.network == 'searched_baseline':
cell_path = os.path.join(args.saved_arch_path, 'searched_baseline',
'genotype.npy')
cell_arch = np.load(cell_path_1)
network_arch = [0, 1, 2, 2, 3, 2, 2, 1, 2, 1, 1, 2]
low_level_layer = 1
model = Model_2_baseline(network_arch, cell_arch, self.nclass,
args, low_level_layer)
elif args.network.startswith('autodeeplab'):
network_arch = [0, 0, 0, 1, 2, 1, 2, 2, 3, 3, 2, 1]
cell_path = os.path.join(args.saved_arch_path, 'autodeeplab',
'genotype.npy')
cell_arch = np.load(cell_path)
low_level_layer = 2
if args.network == 'autodeeplab-dense':
model = Model_2(network_arch, cell_arch, self.nclass, args,
low_level_layer)
elif args.network == 'autodeeplab-baseline':
model = Model_2_baseline(network_arch, cell_arch, self.nclass,
args, low_level_layer)
if args.use_balanced_weights:
classes_weights_path = os.path.join(
Path.db_root_dir(args.dataset),
args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = nn.CrossEntropyLoss(weight=weight,
ignore_index=255).cuda()
self.model = model
# Define Evaluator
self.evaluator_1 = Evaluator(self.nclass)
self.evaluator_2 = Evaluator(self.nclass)
# Using cuda
if args.cuda:
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
# if the weights are wrapped in module object we have to clean it
if args.clean_module:
self.model.load_state_dict(checkpoint['state_dict'])
state_dict = checkpoint['state_dict']
new_state_dict = OrderedDict()
for k, v in state_dict.items():
name = k[7:] # remove 'module.' of dataparallel
new_state_dict[name] = v
self.model.load_state_dict(new_state_dict)
else:
self.model.load_state_dict(checkpoint['state_dict'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
def validation(self):
self.model.eval()
self.evaluator_1.reset()
self.evaluator_2.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
time_meter_1 = AverageMeter()
time_meter_2 = AverageMeter()
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output_1, output_2 = self.model(image)
loss_1 = self.criterion(output_1, target)
loss_2 = self.criterion(output_2, target)
pred_1 = torch.argmax(output_1, axis=1)
pred_2 = torch.argmax(output_2, axis=1)
# Add batch sample into evaluator
self.evaluator_1.add_batch(target, pred_1)
self.evaluator_2.add_batch(target, pred_2)
mIoU_1 = self.evaluator_1.Mean_Intersection_over_Union()
mIoU_2 = self.evaluator_2.Mean_Intersection_over_Union()
print('Validation:')
print("mIoU_1:{}, mIoU_2: {}".format(mIoU_1, mIoU_2))
def testing_entropy(self):
self.saver = Saver(self.args)
self.saver.save_experiment_config()
""" Define Tensorboard Summary """
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
self.model.eval()
self.evaluator_1.reset()
self.evaluator_2.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output_1, avg_confidence, max_confidence = self.model.forward_testing_entropy(
image)
loss_1 = self.criterion(output_1, target)
entropy = normalized_shannon_entropy(output_1)
self.writer.add_scalar('avg_confidence/i', avg_confidence.item(),
i)
self.writer.add_scalar('max_confidence/i', max_confidence.item(),
i)
self.writer.add_scalar('entropy/i', entropy.item(), i)
self.writer.add_scalar('loss/i', loss_1.item(), i)
self.summary.visualize_image(self.writer, self.args.dataset, image,
target_show, output_2, global_step)
print('testing confidence')
self.writer.close()
def dynamic_inference(self,
entropy=False,
confidence_mode=False,
pool_threshold=False,
entropy_threshold=False):
self.model.eval()
self.evaluator_1.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output, earlier_exit, confidence = self.model.forward_dynamic_inference(image, \
entropy, confidence_mode, pool_threshold, entropy_threshold)
loss = self.criterion(output, target)
pred = torch.argmax(output, axis=1)
# Add batch sample into evaluator
self.evaluator_1.add_batch(target, pred)
mIoU = self.evaluator_1.Mean_Intersection_over_Union()
print('Validation:')
print("mIoU_1:".format(mIoU_1))
def mac(self):
self.model.eval()
with torch.no_grad():
flops, params = get_model_complexity_info(
self.model, (3, 1025, 2049),
as_strings=True,
print_per_layer_stat=False)
print('{:<30} {:<8}'.format('Computational complexity: ', flops))
print('{:<30} {:<8}'.format('Number of parameters: ', params))
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
# kwargs = {'num_workers': args.workers, 'pin_memory': True}
kwargs = {'num_workers': 0, 'pin_memory': True}
if args.nir:
input_channels = 4
else:
input_channels = 3
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
# Define network
model = DeepLab(num_classes=3,
backbone=args.backbone,
in_channels=input_channels,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
train_params = [{
'params': model.get_1x_lr_params(),
'lr': args.lr
}, {
'params': model.get_10x_lr_params(),
'lr': args.lr * 10
}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov=args.nesterov)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(
Path.db_root_dir(args.dataset),
args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
weight[1] = 4
weight[2] = 2
weight[0] = 1
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(),
i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
# place_holder_target = target
# place_holder_output = output
self.summary.visualize_image(self.writer, self.args.dataset,
image, target, output,
global_step)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(
Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def calculate_scores(self):
train_loss = 0.0
self.model.eval()
loader = self.val_loader
shape = self.model.module.backbone.layer4[2].conv2.weight.shape
gradient_embeddings = np.zeros((shape[0] * shape[1], len(loader)))
# gradient_embeddings = np.zeros((512*33*33, len(loader)))
# tbar = tqdm(self.train_loader)
tbar = tqdm(loader)
num_img_tr = len(loader)
for i, sample in enumerate(tbar):
# activations = collections.defaultdict(list)
# def save_activation(name, mod, input, output):
# activations[name].append(output.cpu())
#
# for name, m in self.model.named_modules():
# if name == 'module.backbone.layer4.2.relu':
# m.register_forward_hook(partial(save_activation, name))
#
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
# self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
# score = activations['module.backbone.layer4.2.relu'][0].data.numpy().flatten()
score = self.model.module.backbone.layer4[2].conv2.weight.grad
score = score.cpu().data.numpy()[:, :, 0, 0].flatten()
gradient_embeddings[:, i] = score
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(),
i + num_img_tr)
with open('feature_maps/backbone_layer_4_conv2_gradients_trained.npy',
'wb') as f:
print('[INFO] saving the gradients into hard disk')
np.save(f, gradient_embeddings)
# with open('gradients.npy', 'rb') as f:
# print('[INFO] Loading the gradients from hard disk')
# gradient_embeddings = np.load(f)
# print('[INFO] Calculating TSNE embeddings')
#
# embeddings = tsne.fit(gradient_embeddings)
# # embeddings = TSNE(n_components=2).fit_transform(gradient_embeddings)
# print('[INFO] Plotting the embeddings')
# plt.scatter(embeddings[0], embeddings[1])
# plt.show()
self.writer.add_scalar('total_score', train_loss)
# print('[Epoch: %d, numImages: %5d]' % (i, i * self.args.batch_size + image.data.shape[0]))
# print('Loss: %.3f' % train_loss)
def pred_single_image(self, path, counter):
self.model.eval()
img_path = path
lbl_path = os.path.join(
os.path.split(os.path.split(path)[0])[0], 'lbl',
os.path.split(path)[1])
activations = collections.defaultdict(list)
def save_activation(name, mod, input, output):
activations[name].append(output.cpu())
for name, m in self.model.named_modules():
if type(m) == nn.ReLU:
m.register_forward_hook(partial(save_activation, name))
input = cv2.imread(path)
# bkg = cv2.createBackgroundSubtractorMOG2()
# back = bkg.apply(input)
# cv2.imshow('back', back)
# cv2.waitKey()
input = cv2.resize(input, (513, 513), interpolation=cv2.INTER_CUBIC)
image = Image.open(img_path).convert('RGB') # width x height x 3
# _tmp = np.array(Image.open(lbl_path), dtype=np.uint8)
_tmp = np.array(Image.open(img_path), dtype=np.uint8)
_tmp[_tmp == 255] = 1
_tmp[_tmp == 0] = 0
_tmp[_tmp == 128] = 2
_tmp = Image.fromarray(_tmp)
mean = (0.485, 0.456, 0.406)
std = (0.229, 0.224, 0.225)
composed_transforms = transforms.Compose([
tr.FixedResize(size=513),
tr.Normalize(mean=mean, std=std),
tr.ToTensor()
])
sample = {'image': image, 'label': _tmp}
sample = composed_transforms(sample)
image, target = sample['image'], sample['label']
image = torch.unsqueeze(image, dim=0)
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
see = Analysis('module.decoder.last_conv.6', activations)
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
pred = np.reshape(pred, (513, 513))
# prediction = np.append(target, pred, axis=1)
prediction = pred
rgb = np.zeros((prediction.shape[0], prediction.shape[1], 3))
r = prediction.copy()
g = prediction.copy()
b = prediction.copy()
g[g != 1] = 0
g[g == 1] = 255
r[r != 2] = 0
r[r == 2] = 255
b = np.zeros(b.shape)
rgb[:, :, 0] = b
rgb[:, :, 1] = g
rgb[:, :, 2] = r
prediction = np.append(input, rgb.astype(np.uint8), axis=1)
result = np.append(input, prediction.astype(np.uint8), axis=1)
cv2.line(rgb, (513, 0), (513, 1020), (255, 255, 255), thickness=1)
cv2.line(rgb, (513, 0), (513, 1020), (255, 255, 255), thickness=1)
cv2.imwrite(
'/home/robot/git/pytorch-deeplab-xception/run/cropweed/deeplab-resnet/experiment_41/samples/synthetic_{}.png'
.format(counter), prediction)
class Infer(object):
def __init__(self, args, ori_img_lst, init_mask_lst):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
self.ori_img_lst = ori_img_lst
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.test_loader, self.nclass = make_data_loader_demo(
args, args.test_folder, ori_img_lst, init_mask_lst, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn,
use_iou=args.use_maskiou)
self.model = model
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'],
strict=False)
else:
self.model.load_state_dict(checkpoint['state_dict'],
strict=False)
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def test(self, epoch):
self.model.eval()
tbar = tqdm(self.test_loader, desc='\r')
images = []
ious = np.zeros([self.test_loader.__len__(), self.nclass])
for i, sample in enumerate(tbar):
image = sample['image']
if self.args.cuda:
image = image.cuda()
with torch.no_grad():
output, output_iou = self.model(image)
pred = output.data.cpu().numpy()
pred = np.argmax(pred, axis=1)
images.append(pred.squeeze(axis=0))
if self.args.use_maskiou:
output_iou = output_iou.data.cpu().numpy()
output_iou[output_iou == 0] = np.nan
ious[i, :] = output_iou
predictions = {'images': images, 'ious': ious}
self.saver.save_demo_result(predictions, self.ori_img_lst,
self.args.test_folder)
print('\nTest:')
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.test_batch_size + image.data.shape[0]))
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader1, self.train_loader2, self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(Path.db_root_dir(args.dataset), args.dataset+'_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset, self.train_loader, self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
# Define network
model = AutoDeeplab (self.nclass, 12, self.criterion)
optimizer = torch.optim.SGD(
model.parameters(),
args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay
)
self.model, self.optimizer = model, optimizer
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model, device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
print ('cuda finished')
# Define Optimizer
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr,
args.epochs, len(self.train_loader1))
self.architect = Architect (self.model, args)
# print(self.model.arch_parameters()[2])
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'" .format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
for name, para in self.model._parameters.items():
print(name)
class Server(segmentation_pb2_grpc.SegmentationServicer):
def __init__(self, *args, **kwargs):
super(Server, self).__init__(*args, **kwargs)
args = parser.parse_known_args()
args.cuda = not args.no_cuda and torch.cuda.is_available()
if args.cuda:
try:
args.gpu_ids = [int(s) for s in args.gpu_ids.split(',')]
except ValueError:
raise ValueError(
'Argument --gpu_ids must be a comma-separated list of integers only'
)
if args.sync_bn is None:
if args.cuda and len(args.gpu_ids) > 1:
args.sync_bn = True
else:
args.sync_bn = False
# default settings for epochs, batch_size and lr
if args.epochs is None:
epoches = {
'coco': 30,
'cityscapes': 200,
'pascal': 50,
}
args.epochs = epoches[args.dataset.lower()]
if args.batch_size is None:
args.batch_size = 4 * len(args.gpu_ids)
if args.test_batch_size is None:
args.test_batch_size = args.batch_size
if args.lr is None:
lrs = {
'coco': 0.1,
'cityscapes': 0.01,
'pascal': 0.007,
}
args.lr = lrs[args.dataset.lower()] / (
4 * len(args.gpu_ids)) * args.batch_size
if args.checkname is None:
args.checkname = 'deeplab-' + str(args.backbone)
print(args)
torch.manual_seed(args.seed)
self.initialize_model(args)
def initialize_model(self, args):
self.args = args
# Define Saver
self.saver = Saver(self.args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_worker': self.args.worker, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(
self.args, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=self.args.backbone,
output_stride=self.args.out_stride,
sync_bn=self.args.sync_bn,
freeze_bn=self.args.freeze_bn)
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Using cuda
if self.args.cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
if not os.path.isfile(self.args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
self.args.resume))
checkpoint = torch.load(self.args.resume)
self.args.start_epoch = checkpoint['epoch']
if self.args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
self.model.eval()
self.evaluator.reset()
def process(self, request):
if not hasattr(request, "image_encoded"):
raise ValueError(
"One of current request doesn't contain encoded image.")
image_encoded = request.image_encoded
def _decode_image(content):
image_parser = ImageFile.Parser()
image_parser.feed(content)
return image_parser.close()
image = transforms.ToTensor(_decode_image(image_encoded))
if self.args.cuda:
image = image.cuda()
with torch.no_grad():
output = self.model(image)
return output
def recvFeature(self, request, context):
output = self.process(request)
pred = output.data.cpu().numpy()
pred = Image.fromarray(np.argmax(pred, axis=1), mode='L')
request.image_segmentation_class_encoded = pred.tobytes()
return request
def recvFeatures(self, request, context):
for r in request:
output = self.process(r)
pred = output.data.cpu().numpy()
pred = Image.fromarray(np.argmax(pred, axis=1), mode='L')
r.image_segmentation_class_encoded = pred.tobytes()
return request
class Trainer(object):
def __init__(self,
batch_size=32,
optimizer_name="Adam",
lr=1e-3,
weight_decay=1e-5,
epochs=200,
model_name="model01",
gpu_ids=None,
resume=None,
tqdm=None):
"""
args:
batch_size = (int) batch_size of training and validation
lr = (float) learning rate of optimization
weight_decay = (float) weight decay of optimization
epochs = (int) The number of epochs of training
model_name = (string) The name of training model. Will be folder name.
gpu_ids = (List) List of gpu_ids. (e.g. gpu_ids = [0, 1]). Use CPU, if it is None.
resume = (Dict) Dict of some settings. (resume = {"checkpoint_path":PATH_of_checkpoint, "fine_tuning":True or False}).
Learn from scratch, if it is None.
tqdm = (tqdm Object) progress bar object. Set your tqdm please.
Don't view progress bar, if it is None.
"""
# Set params
self.batch_size = batch_size
self.epochs = epochs
self.start_epoch = 0
self.use_cuda = (gpu_ids is not None) and torch.cuda.is_available
self.tqdm = tqdm
self.use_tqdm = tqdm is not None
# ------------------------- #
# Define Utils. (No need to Change.)
"""
These are Project Modules.
You may not have to change these.
Saver: Save model weight. / <utils.saver.Saver()>
TensorboardSummary: Write tensorboard file. / <utils.summaries.TensorboardSummary()>
Evaluator: Calculate some metrics (e.g. Accuracy). / <utils.metrics.Evaluator()>
"""
## ***Define Saver***
self.saver = Saver(model_name, lr, epochs)
self.saver.save_experiment_config()
## ***Define Tensorboard Summary***
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# ------------------------- #
# Define Training components. (You have to Change!)
"""
These are important setting for training.
You have to change these.
make_data_loader: This creates some <Dataloader>s. / <dataloader.__init__>
Modeling: You have to define your Model. / <modeling.modeling.Modeling()>
Evaluator: You have to define Evaluator. / <utils.metrics.Evaluator()>
Optimizer: You have to define Optimizer. / <utils.optimizer.Optimizer()>
Loss: You have to define Loss function. / <utils.loss.Loss()>
"""
## ***Define Dataloader***
self.train_loader, self.val_loader, self.test_loader, self.num_classes = make_data_loader(
batch_size)
## ***Define Your Model***
self.model = Modeling(self.num_classes)
## ***Define Evaluator***
self.evaluator = Evaluator(self.num_classes)
## ***Define Optimizer***
self.optimizer = Optimizer(self.model.parameters(),
optimizer_name=optimizer_name,
lr=lr,
weight_decay=weight_decay)
## ***Define Loss***
self.criterion = Loss()
# ------------------------- #
# Some settings
"""
You don't have to touch bellow code.
Using cuda: Enable to use cuda if you want.
Resuming checkpoint: You can resume training if you want.
"""
## ***Using cuda***
if self.use_cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=gpu_ids).cuda()
## ***Resuming checkpoint***
"""You can ignore bellow code."""
self.best_pred = 0.0
if resume is not None:
if not os.path.isfile(resume["checkpoint_path"]):
raise RuntimeError("=> no checkpoint found at '{}'".format(
resume["checkpoint_path"]))
checkpoint = torch.load(resume["checkpoint_path"])
self.start_epoch = checkpoint['epoch']
if self.use_cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if resume["fine_tuning"]:
# resume params of optimizer, if run fine tuning.
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.start_epoch = 0
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
resume["checkpoint_path"], checkpoint['epoch']))
def _run_epoch(self,
epoch,
mode="train",
leave_progress=True,
use_optuna=False):
"""
run training or validation 1 epoch.
You don't have to change almost of this method.
args:
epoch = (int) How many epochs this time.
mode = {"train" or "val"}
leave_progress = {True or False} Can choose whether leave progress bar or not.
use_optuna = {True or False} Can choose whether use optuna or not.
Change point (if you need):
- Evaluation: You can change metrics of monitoring.
- writer.add_scalar: You can change metrics to be saved in tensorboard.
"""
# ------------------------- #
leave_progress = leave_progress and not use_optuna
# Initializing
epoch_loss = 0.0
## Set model mode & tqdm (progress bar; it wrap dataloader)
assert (mode == "train") or (
mode == "val"
), "argument 'mode' can be 'train' or 'val.' Not {}.".format(mode)
if mode == "train":
data_loader = self.tqdm(
self.train_loader,
leave=leave_progress) if self.use_tqdm else self.train_loader
self.model.train()
num_dataset = len(self.train_loader)
elif mode == "val":
data_loader = self.tqdm(
self.val_loader,
leave=leave_progress) if self.use_tqdm else self.val_loader
self.model.eval()
num_dataset = len(self.val_loader)
## Reset confusion matrix of evaluator
self.evaluator.reset()
# ------------------------- #
# Run 1 epoch
for i, sample in enumerate(data_loader):
## ***Get Input data***
inputs, target = sample["input"], sample["label"]
if self.use_cuda:
inputs, target = inputs.cuda(), target.cuda()
## ***Calculate Loss <Train>***
if mode == "train":
self.optimizer.zero_grad()
output = self.model(inputs)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
## ***Calculate Loss <Validation>***
elif mode == "val":
with torch.no_grad():
output = self.model(inputs)
loss = self.criterion(output, target)
epoch_loss += loss.item()
## ***Report results***
if self.use_tqdm:
data_loader.set_description('{} loss: {:.3f}'.format(
mode, epoch_loss / (i + 1)))
## ***Add batch results into evaluator***
target = target.cpu().numpy()
output = torch.argmax(output, axis=1).data.cpu().numpy()
self.evaluator.add_batch(target, output)
## **********Evaluate Score**********
"""You can add new metrics! <utils.metrics.Evaluator()>"""
Acc = self.evaluator.Accuracy()
if not use_optuna:
## ***Save eval into Tensorboard***
self.writer.add_scalar('{}/loss_epoch'.format(mode),
epoch_loss / (i + 1), epoch)
self.writer.add_scalar('{}/Acc'.format(mode), Acc, epoch)
print('Total {} loss: {:.3f}'.format(mode,
epoch_loss / num_dataset))
print("{0} Acc:{1:.2f}".format(mode, Acc))
# Return score to watch. (update checkpoint or optuna's objective)
return Acc
def run(self, leave_progress=True, use_optuna=False):
"""
Run all epochs of training and validation.
"""
for epoch in tqdm(range(self.start_epoch, self.epochs)):
print(pycolor.GREEN + "[Epoch: {}]".format(epoch) + pycolor.END)
## ***Train***
print(pycolor.YELLOW + "Training:" + pycolor.END)
self._run_epoch(epoch,
mode="train",
leave_progress=leave_progress,
use_optuna=use_optuna)
## ***Validation***
print(pycolor.YELLOW + "Validation:" + pycolor.END)
score = self._run_epoch(epoch,
mode="val",
leave_progress=leave_progress,
use_optuna=use_optuna)
print("---------------------")
if score > self.best_pred:
print("model improve best score from {:.4f} to {:.4f}.".format(
self.best_pred, score))
self.best_pred = score
self.saver.save_checkpoint({
'epoch':
epoch + 1,
'state_dict':
self.model.state_dict(),
'optimizer':
self.optimizer.state_dict(),
'best_pred':
self.best_pred,
})
self.writer.close()
return self.best_pred
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
# when model is initialized, the track_running_stats is true so the running_mean and running_var is
# initialized and loaded the pretrained model. Since the model uses the batch stats during training mode,
# the optimization is easier while the running stats will be used for eval mode.
# Using batch stats makes optimization easier
for child in model.modules():
if type(child) == nn.BatchNorm2d:
child.track_running_stats = False # use batch stats for train and eval modes;
# if running stats are not None, they are still updated
# in such toy example, we do not use running stats!!!
if type(child) == nn.Dropout:
child.p = 0 # no dropout
train_params = [{
'params': model.get_1x_lr_params(),
'lr': args.lr
}, {
'params': model.get_10x_lr_params(),
'lr': args.lr * 10
}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov=args.nesterov)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(
Path.db_root_dir(args.dataset),
args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
if args.densecrfloss > 0:
self.densecrflosslayer = DenseCRFLoss(
weight=args.densecrfloss,
sigma_rgb=args.sigma_rgb,
sigma_xy=args.sigma_xy,
scale_factor=args.rloss_scale)
print(self.densecrflosslayer)
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
self.trainLoss = []
self.miou = []
self.mean_entropy = []
self.mid_entropy = []
self.celoss = []
self.crfloss = []
def training(self, epoch, args):
train_loss = 0.0
train_celoss = 0.0
train_crfloss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader) #number of batches
softmax = nn.Softmax(dim=1)
for i, sample in enumerate(tbar):
image, target, gt = sample['image'], sample['label'], sample[
'groundtruth']
croppings = (target != 254).float()
if self.args.cuda:
croppings = croppings.cuda()
target[target == 254] = 255
#target[target==255]=0 #only for full CE
gt[gt ==
255] = 0 # gt is used for affinity matrix, no unsure regions needed
# Pixels labeled 255 are those unlabeled pixels. Padded region are labeled 254.
# see function RandomScaleCrop in dataloaders/custom_transforms.py for the detail in data preprocessing
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
outputT = self.model(image)
#miou
output_miou = outputT.clone().detach().cpu().numpy()
output_miou = np.argmax(output_miou, axis=1)
gt_miou = gt.clone().numpy()
self.evaluator.reset()
self.evaluator.add_batch(gt_miou, output_miou)
mIoU = self.evaluator.Mean_Intersection_over_Union()
self.miou.append(mIoU)
celoss = self.criterion(outputT, target)
if self.args.densecrfloss == 0:
loss = celoss
else:
T = 1.0
output = outputT / T
#entropy calculation
logsoftmax = nn.LogSoftmax(dim=1)
softmax = nn.Softmax(dim=1)
logp = logsoftmax(output)
p = softmax(output)
logp = logp.cpu().detach().numpy()
p = p.cpu().detach().numpy()
entropy = np.sum(-p * logp, axis=1)
self.mean_entropy.append(np.mean(entropy[0]).item())
self.mid_entropy.append(np.median(entropy[0]).item())
#if epoch<=30:
# pass
#else:
# h = output.register_hook(Znormalization)
#probs = softmax(output)
#denormalized_image = denormalizeimage(sample['image'], mean=(0.485, 0.456, 0.406), std=(0.229, 0.224, 0.225))
#densecrfloss = self.densecrflosslayer(denormalized_image,probs,croppings)
#gt_tensor = gt.unsqueeze(1).repeat(1,3,1,1)
gt_tensor = torch.zeros_like(output)
gt_tensor[0, 0, gt[0, ...] == 0] = 1
gt_tensor[1, 0, gt[0, ...] == 0] = 1
gt_tensor[0, 1, gt[1, ...] == 1] = 1
gt_tensor[1, 1, gt[1, ...] == 1] = 1
gt_tensor = gt_tensor.cuda()
tempreture = 1.0
####################################################################################################
#element-wise log
logsoftmax = nn.LogSoftmax(dim=1)
logS = logsoftmax(output)
part2 = torch.logsumexp(output, dim=1, keepdim=True)
part1 = torch.logsumexp(output[:, 1:, :, :],
dim=1,
keepdim=True)
for d in range(1, 20):
newtmp = torch.cat(
(output[:, :d, :, :], output[:, d + 1:, :, :]), dim=1)
newtmp2 = torch.logsumexp(newtmp, dim=1, keepdim=True)
part1 = torch.cat((part1, newtmp2), dim=1)
part1 = torch.cat(
(part1,
torch.logsumexp(output[:, :20, :, :], dim=1,
keepdim=True)),
dim=1)
log1_S = part1 - part2
# element-wise log implementation2
#probs = softmax(output)
densecrfloss = self.densecrflosslayer(
gt_tensor, logS, log1_S, croppings) # use groundtruth
######################################################################################################
##### class variance regularizer #####
'''
variance = 0
count = 0
S1num = (gt[0]==0).sum()
S2num = (gt[0]==1).sum()
for i in range(output.size()[0]): # i stands for batch
variance += torch.sum(torch.var(output[i,:,gt[i]==0],dim=1))
variance += torch.sum(torch.var(output[i,:,gt[i]==1],dim=1))
count += 1
Variance = args.densecrfloss * variance / count
loss = celoss + Variance
'''
######################################
if self.args.cuda:
densecrfloss = densecrfloss.cuda()
loss = celoss + densecrfloss
train_crfloss += densecrfloss.item()
#train_crfloss += Variance.item()
loss.backward()
self.optimizer.step()
train_loss += loss.item()
train_celoss += celoss.item()
tbar.set_description(
'Train loss: %.3f = CE loss %.3f + CRF loss: %.3f' %
(train_loss / (i + 1), train_celoss / (i + 1), train_crfloss /
(i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(),
i + num_img_tr * epoch)
# Show 10 * ?(3) inference results each epoch
if False: #i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset,
image, target, outputT,
global_step)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
self.trainLoss.append(train_loss)
self.celoss.append(train_celoss)
self.crfloss.append(train_crfloss)
#if self.args.no_val:
if self.args.save_interval:
# save checkpoint every interval epoch
is_best = False
if (epoch + 1) % self.args.save_interval == 0:
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
},
is_best,
filename='checkpoint_epoch_{}.pth.tar'.format(
str(epoch + 1)))
def validation(self, epoch):
self.model.eval(
) # running stats is still updating now but we just do not use them
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
#target[target==254]=255
target[target ==
255] = 0 #only for groundtruth affinity toy experiment
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
#print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(
Acc, Acc_class, mIoU, FWIoU))
#print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
return new_pred
class Trainer(object):
def __init__(self, args):
self.args = args
self.saver = Saver(args)
self.saver.save_experiment_config()
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
self.model = OCRNet(self.nclass)
self.optimizer = torch.optim.SGD(self.model.parameters(),
lr=args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov=args.nesterov)
if args.use_balanced_weights:
weight = torch.tensor([0.2, 0.8], dtype=torch.float32)
else:
weight = None
self.criterion = SegmentationLosses(
weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.evaluator = Evaluator(self.nclass)
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader))
if args.cuda:
self.model = self.model.cuda()
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output, _ = self.model(image)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
print('[Epoch:{},num_images:{}]'.format(
epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss:{}'.format(train_loss))
if self.args.nu_val:
is_best = False
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
_, output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
self.evaluator.add_batch(target, pred)
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
road_iou, mIOU = self.evaluator.Mean_Intersection_over_Union()
FWIOU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
print('Validation:\n')
print('[Epoch:{},num_image:{}]'.format(
epoch, i * self.args.batch_size + image.data.shape[0]))
print('Acc:{},Acc_class:{},mIOU:{},road_iou:{},fwIOU:{}'.format(
Acc, Acc_class, mIOU, road_iou, FWIOU))
print('Loss:{}'.format(test_loss))
new_pred = road_iou
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class Trainer(object):
def __init__(self, args):
self.args = args
# Define saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define TensorBoard summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
if not args.test:
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclasses = make_data_loader(
args)
if self.args.task == 'segmentation':
self.vs = Vs(args.dataset)
self.evaluator = Evaluator(self.nclasses['val'])
# Define Network
model = Model(args, self.nclasses['train'], self.nclasses['val'])
if args.model == None:
train_params = [{'params': model.parameters(), 'lr': args.lr}]
elif 'deeplab' in args.model:
train_params = [{
'params': model.backbone.parameters(),
'lr': args.lr
}, {
'params': model.deeplab.parameters(),
'lr': args.lr * 10
}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params,
momentum=args.momentum,
weight_decay=args.weight_decay)
criterion = nn.CrossEntropyLoss(ignore_index=args.ignore_index)
self.model, self.optimizer, self.criterion = model, optimizer, criterion
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader))
# Loading Classifier (SPNet style)
if args.call is None or args.cseen is None or args.cunseen is None:
raise NotImplementedError(
"Classifiers for 'all', 'seen', 'unseen' should be loaded")
else:
if not os.path.isfile(args.cseen):
raise RuntimeError(
"=> no checkpoint for clasifier found at '{}'".format(
args.classifier))
self.model.load_train(args.cseen)
if args.test_set == 'unseen':
ctest = args.cunseen
elif args.test_set == 'seen':
ctest = args.cseen
else:
ctest = args.call
if not os.path.isfile(ctest):
raise RuntimeError(
"=> no checkpoint for clasifier found at '{}'".format(
ctest))
self.model.load_test(ctest)
print("Classifiers checkpoint successfully loaded from {}, {}".
format(args.cseen, ctest))
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("{}: No such checkpoint exists".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
pretrained_dict = checkpoint['state_dict']
model_dict = {}
state_dict = self.model.state_dict()
for k, v in pretrained_dict.items():
if 'classifier' in k: continue
if k in state_dict:
model_dict[k] = v
state_dict.update(model_dict)
self.model.load_state_dict(state_dict)
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("Loading {} (epoch {}) successfully done".format(
args.resume, checkpoint['epoch']))
# Using CUDA
if args.cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
self.model = self.model.cuda()
else:
raise RuntimeError("CUDA SHOULD BE SUPPORTED")
if args.ft:
args.start_epoch = 0
def train(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
image, target = sample['image'].cuda(), sample['label']
target = target.cuda().long()
trues = torch.from_numpy(np.array([True] * image.shape[0])).cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image, trues)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(),
i + num_img_tr * epoch)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print("[epoch: %d, loss: %.3f]" % (epoch, train_loss))
if self.args.no_val:
is_best = False
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def val(self, epoch):
if self.args.task == 'classification':
top1 = AverageMeter('Acc@1', ':6.2f')
top5 = AverageMeter('Acc@5', ':6.2f')
elif self.args.task == 'segmentation':
self.evaluator.reset()
self.model.eval()
tbar = tqdm(self.val_loader, desc='\r')
miou = 0.0
count = 0
for i, sample in enumerate(tbar):
images, targets, names = sample['image'].cuda(
), sample['label'].cuda().long(), sample['name']
falses = torch.from_numpy(np.array([False] *
images.shape[0])).cuda()
with torch.no_grad():
outputs = self.model(images, falses)
loss = self.criterion(outputs, targets)
#test_loss += loss.item()
# Score record
if self.args.task == 'classification':
acc1, acc5 = accuracy(outputs, targets, topk=(1, 5))
top1.update(acc1[0], images.size(0))
top5.update(acc5[0], images.size(0))
elif self.args.task == 'segmentation':
preds = torch.argmax(outputs, axis=1)
count += preds.shape[0]
miou += get_iou(preds,
targets,
n_classes=self.nclasses['test'],
ignore0=self.args.test_set == 'seen'
or self.args.test_set == 'unseen')
#self.evaluator.add_batch(targets.cpu().numpy(), preds.cpu().numpy())
tbar.set_description('mIoU: %.3f' % (miou / count))
# Fast test during the training
if self.args.task == 'classification':
_top1 = top1.avg
_top5 = top5.avg
self.writer.add_scalar('val/top1', _top1, epoch)
self.writer.add_scalar('val/top5', _top5, epoch)
print("Top-1: %.3f, Top-5: %.3f" % (_top1, _top5))
new_score = _top1
elif self.args.task == 'segmentation':
self.writer.add_scalar('val/total_miou', miou, epoch)
print('mIoU: %.3f' % miou)
'''
acc = self.evaluator.Pixel_Accuracy()
acc_class = self.evaluator.Pixel_Accuracy_Class()
miou = self.evaluator.Mean_Intersection_over_Union()
fwiou = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/Acc', acc, epoch)
self.writer.add_scalar('val/Acc_class', acc_class, epoch)
self.writer.add_scalar('val/mIoU', miou, epoch)
self.writer.add_scalar('val/fwIoU', fwiou, epoch)
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU:{}".format(acc, acc_class, miou, fwiou))
'''
new_score = miou
if new_score >= self.best_pred:
is_best = True
self.best_pred = float(new_score)
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class evaluation(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.train_hard_mining_loader, self.val_loader, self.val_save_loader, self.arg_loader, self.test_loader, self.val_loader_for_compare, self.nclass = make_data_loader(
args, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=True,
freeze_bn=args.freeze_bn)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(
Path.db_root_dir(args.dataset),
args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model = model
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
# evaluate the model on validation dataset
def validation(self):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
self.evaluator.add_batch(target, pred)
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
print('Validation:')
print('[numImages: %5d]' %
(i * self.args.batch_size + image.data.shape[0]))
# print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(Acc, Acc_class, mIoU, FWIoU))
print("Acc:", Acc)
print("Acc_class:", Acc_class)
print("mIoU:", mIoU)
print("fwIoU:", FWIoU)
print('Loss: %.3f' % test_loss)
# save the segmentation of test datasets
# change the target direction in pascal.py
def test_save(self):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.test_loader, desc='\r')
for i, sample in enumerate(tbar):
image = sample[0]
image_id = sample[1]
if self.args.cuda:
image = image.cuda()
with torch.no_grad():
output = self.model(image)
prediction = output.data.max(1)[1].squeeze_(1).squeeze_(
0).cpu().numpy()
prediction = prediction.astype('uint8')
im = PIL.Image.fromarray(prediction)
im.save(image_id[0])
# save the segmentation of validation datasets in original size
# need to change the direction here
def validation_save(self):
self.model.eval()
self.evaluator.reset()
filedir = 'C:\\Users\\Shuang\\Desktop\\val_res'
tbar = tqdm(self.val_save_loader, desc='\r')
for i, sample in enumerate(tbar):
image, target, image_id = sample['image'], sample['label'], sample[
'id']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
prediction = output.data.max(1)[1].squeeze_(1).squeeze_(
0).cpu().numpy()
im = PIL.Image.fromarray(prediction.astype('uint8'))
h = target.shape[1]
w = target.shape[2]
ratio = 513. / np.max([w, h])
if w < h:
m = int(w * ratio)
im = im.crop((0, 0, m, 513))
elif w >= h:
m = int(h * ratio)
im = im.crop((0, 0, 513, m))
im = im.resize((w, h), PIL.Image.BILINEAR)
if not os.path.isdir(filedir):
os.makedirs(filedir)
im.save(os.path.join(filedir, image_id[0] + ".png"))
def validation_resize(self):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_save_loader, desc='\r')
for i, sample in enumerate(tbar):
image, target, image_id = sample['image'], sample['label'], sample[
'id']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
prediction = output.data.max(1)[1].squeeze_(1).squeeze_(
0).cpu().numpy()
im = PIL.Image.fromarray(prediction.astype('uint8'))
h = target.shape[1]
w = target.shape[2]
ratio = 513. / np.max([w, h])
if w < h:
m = int(w * ratio)
im = im.crop((0, 0, m, 513))
elif w >= h:
m = int(h * ratio)
im = im.crop((0, 0, 513, m))
im = im.resize((w, h), PIL.Image.BILINEAR)
if not os.path.isdir(filedir):
os.makedirs(filedir)
im.save(os.path.join(filedir, image_id[0] + ".png"))
# calculate the MIoU of the result and label
# need to change the direction in pascal.py
def compare(self):
tbar = tqdm(self.val_loader_for_compare, desc='\r')
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
image = image.numpy().astype(np.int64)
target = target.numpy().astype(np.float32)
self.evaluator.add_batch(target, image)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
print('Compare the result and label:')
print('[numImages: %5d]' %
(i * self.args.batch_size + image.data.shape[0]))
# print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(Acc, Acc_class, mIoU, FWIoU))
print("Acc:", Acc)
print("Acc_class:", Acc_class)
print("mIoU:", mIoU)
print("fwIoU:", FWIoU)
# hard mining and change the train list of next epoch
def hard_mining(self):
iou_id = []
tbar = tqdm(self.val_loader_for_compare, desc='\r')
for i, sample in enumerate(tbar):
image, target, image_id = sample['image'], sample['label'], sample[
'id']
image = image.numpy().astype(np.int64)
target = target.numpy().astype(np.float32)
self.evaluator.one_add_batch(target, image)
IoU = self.evaluator.One_Intersection_over_Union()
IoU = float(IoU)
iou_id.append([IoU, image_id])
iou_id.sort()
print(iou_id)
filename = 'F:/pingan/VOCdevkit/VOC2012/ImageSets/Segmentation/arg1.txt'
if not os.path.exists(filename):
os.system(r'touch %s' % filename)
f = open(filename, 'w')
for i in range(10):
f.write(iou_id[i][1][0] + "\n")
f.close()
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
self.use_amp = True if (APEX_AVAILABLE and args.use_amp) else False
self.opt_level = args.opt_level
kwargs = {'num_workers': args.workers, 'pin_memory': True, 'drop_last':True}
self.train_loaderA, self.train_loaderB, self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
if args.use_balanced_weights:
classes_weights_path = os.path.join(Path.db_root_dir(args.dataset), args.dataset+'_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
#if so, which trainloader to use?
weight = calculate_weigths_labels(args.dataset, self.train_loader, self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
# Define network
model = AutoDeeplab (num_classes=self.nclass, num_layers=12, criterion=self.criterion, filter_multiplier=self.args.filter_multiplier,
block_multiplier=self.args.block_multiplier, step=self.args.step)
optimizer = torch.optim.SGD(
model.weight_parameters(),
args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay
)
self.model, self.optimizer = model, optimizer
self.architect_optimizer = torch.optim.Adam(self.model.arch_parameters(),
lr=args.arch_lr, betas=(0.9, 0.999),
weight_decay=args.arch_weight_decay)
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr,
args.epochs, len(self.train_loaderA), min_lr=args.min_lr)
# TODO: Figure out if len(self.train_loader) should be devided by two ? in other module as well
# Using cuda
if args.cuda:
self.model = self.model.cuda()
# mixed precision
if self.use_amp and args.cuda:
keep_batchnorm_fp32 = True if (self.opt_level == 'O2' or self.opt_level == 'O3') else None
# fix for current pytorch version with opt_level 'O1'
if self.opt_level == 'O1' and torch.__version__ < '1.3':
for module in self.model.modules():
if isinstance(module, torch.nn.modules.batchnorm._BatchNorm):
# Hack to fix BN fprop without affine transformation
if module.weight is None:
module.weight = torch.nn.Parameter(
torch.ones(module.running_var.shape, dtype=module.running_var.dtype,
device=module.running_var.device), requires_grad=False)
if module.bias is None:
module.bias = torch.nn.Parameter(
torch.zeros(module.running_var.shape, dtype=module.running_var.dtype,
device=module.running_var.device), requires_grad=False)
# print(keep_batchnorm_fp32)
self.model, [self.optimizer, self.architect_optimizer] = amp.initialize(
self.model, [self.optimizer, self.architect_optimizer], opt_level=self.opt_level,
keep_batchnorm_fp32=keep_batchnorm_fp32, loss_scale="dynamic")
print('cuda finished')
# Using data parallel
if args.cuda and len(self.args.gpu_ids) >1:
if self.opt_level == 'O2' or self.opt_level == 'O3':
print('currently cannot run with nn.DataParallel and optimization level', self.opt_level)
self.model = torch.nn.DataParallel(self.model, device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
print('training on multiple-GPUs')
#checkpoint = torch.load(args.resume)
#print('about to load state_dict')
#self.model.load_state_dict(checkpoint['state_dict'])
#print('model loaded')
#sys.exit()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'" .format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
# if the weights are wrapped in module object we have to clean it
if args.clean_module:
self.model.load_state_dict(checkpoint['state_dict'])
state_dict = checkpoint['state_dict']
new_state_dict = OrderedDict()
for k, v in state_dict.items():
name = k[7:] # remove 'module.' of dataparallel
new_state_dict[name] = v
# self.model.load_state_dict(new_state_dict)
copy_state_dict(self.model.state_dict(), new_state_dict)
else:
if (torch.cuda.device_count() > 1 or args.load_parallel):
# self.model.module.load_state_dict(checkpoint['state_dict'])
copy_state_dict(self.model.module.state_dict(), checkpoint['state_dict'])
else:
# self.model.load_state_dict(checkpoint['state_dict'])
copy_state_dict(self.model.state_dict(), checkpoint['state_dict'])
if not args.ft:
# self.optimizer.load_state_dict(checkpoint['optimizer'])
copy_state_dict(self.optimizer.state_dict(), checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loaderA)
num_img_tr = len(self.train_loaderA)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
loss = self.criterion(output, target)
if self.use_amp:
with amp.scale_loss(loss, self.optimizer) as scaled_loss:
scaled_loss.backward()
else:
loss.backward()
self.optimizer.step()
if epoch >= self.args.alpha_epoch:
search = next(iter(self.train_loaderB))
image_search, target_search = search['image'], search['label']
if self.args.cuda:
image_search, target_search = image_search.cuda (), target_search.cuda ()
self.architect_optimizer.zero_grad()
output_search = self.model(image_search)
arch_loss = self.criterion(output_search, target_search)
if self.use_amp:
with amp.scale_loss(arch_loss, self.architect_optimizer) as arch_scaled_loss:
arch_scaled_loss.backward()
else:
arch_loss.backward()
self.architect_optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
#self.writer.add_scalar('train/total_loss_iter', loss.item(), i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset, image, target, output, global_step)
#torch.cuda.empty_cache()
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
if self.args.no_val:
# save checkpoint every epoch
is_best = False
if torch.cuda.device_count() > 1:
state_dict = self.model.module.state_dict()
else:
state_dict = self.model.state_dict()
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': state_dict,
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
if torch.cuda.device_count() > 1:
state_dict = self.model.module.state_dict()
else:
state_dict = self.model.state_dict()
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': state_dict,
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class Trainer(object):
def __init__(self, args):
self.args = args
self.half = args.half
self.prev_pred = 0.0
self.bad_count = 0
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
#train_params = [{'params': model.get_1x_lr_params(), 'lr': args.lr}, {'params': model.get_10x_lr_params(), 'lr': args.lr*10}]
#optimizer = torch.optim.SGD(train_params, momentum=args.momentum, weight_decay=args.weight_decay, nesterov=args.nesterov)
optimizer = torch.optim.SGD(params=model.parameters(),
lr=args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov=args.nesterov)
#optimizer = torch.optim.Adam(params=model.parameters(), lr=args.lr)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(
Path.db_root_dir(args.dataset),
args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
if self.half:
self.model.half()
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.bad_count)
if self.bad_count >= 2:
self.bad_count = 0
self.optimizer.zero_grad()
if self.half:
output = self.model(image.half()).float()
else:
output = self.model(image)
# print(output.shape, target.shape)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.6f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(),
i + num_img_tr * epoch)
self.writer.add_scalar('train/lr', self.scheduler.lr, epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset,
image, target, output,
global_step)
if self.half:
self.model.float()
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.6f Prev best pred: %.6f' % (train_loss, self.best_pred))
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def Dice(self, gt, pred):
intersection = (pred * gt).sum()
union = pred.sum() + gt.sum() + 1e-15
return 2.0 * intersection / union
def validation(self, epoch):
self.model.eval()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
dice = 0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.6f' % (test_loss / (i + 1)))
# output = F.softmax(output, dim=1)
# #output = F.interpolate(output, size=(1280, 1918), mode='bilinear', align_corners=False)
# output = output.cpu().numpy()[0][1]
# output = output > 0.5
# target = target.cpu().numpy().squeeze()
target = target.cpu().numpy().squeeze()
output = output.data.cpu().numpy()
output = np.argmax(output, axis=1).squeeze()
# print(output.shape)
assert target.shape == output.shape
dice += self.Dice(target, output)
dice /= tbar.total
self.writer.add_scalar('val/Dice', dice, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
#print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}, Dice: {}".format(Acc, Acc_class, mIoU, FWIoU, Dice))
print('Loss: %.6f Dice: %.6f' % (test_loss, dice))
new_pred = dice
if new_pred <= self.prev_pred:
self.bad_count += 1
else:
self.bad_count = 0
self.prev_pred = new_pred
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
print('Best Pred %.5f' % self.best_pred)
class Predictor(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
train_params = [{
'params': model.get_1x_lr_params(),
'lr': args.lr
}, {
'params': model.get_10x_lr_params(),
'lr': args.lr * 10
}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov=args.nesterov)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(
Path.db_root_dir(args.dataset),
args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def _check_dir(self, dir_name):
if not os.path.exists(dir_name):
os.mkdir(dir_name)
def _check_out_dir(self, scales=[]):
self._check_dir('output')
for scale in scales:
fp = 'output/scale_{}'.format(scale)
self._check_dir(fp)
def predict(self,
filename='',
scales=[0.8, 1, 1.2, 1.4, 1.6, 1.8, 2, 2.2, 2.4]):
self.model.eval()
# 检查输出目录
self._check_out_dir(scales)
# 读入图片
image = Image.open(filename)
# 处理图片
for scale in scales:
in_transform = transforms.Compose([
transforms.ToTensor(), lambda x: torch.unsqueeze(x, dim=0),
lambda x: torch.nn.Upsample(scale_factor=scale)(x)
])
img = in_transform(image)
img = img.cuda()
with torch.no_grad():
output = self.model(img)
pred = output.data.cpu().numpy()
pred = np.argmax(pred, axis=1)
# predict mask
mask = pred[0]
mask = VOCSegmentation.fill_colormap(mask)
mask = Image.fromarray(mask)
file_path = 'output/scale_{}/{}.jpg'
fn = filename.split('/')[-1].replace('.jpg', '')
mask.save(file_path.format(scale, fn), format='jpeg')
class Val(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(Path.db_root_dir(args.dataset), args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset, self.train_loader, self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model = model
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model, device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def test(self):
for i, sample in enumerate(test_ds):
image = sample['image']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
prediction = output.data.max(1)[1].squeeze_(1).squeeze_(0).cpu().numpy()
prediction = prediction.astype('uint8')
for img in range(2):
predict = prediction[img]
im = PIL.Image.fromarray(predict)
im.save(os.path.join('test', 'result', str(i) + str(img) + '.png'))
mask = im.convert('P')
new_mask = mask.putpalette(palette)
new_mask.save(os.path.join('test', 'show', str(i) + str(img) + '.png'))
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
train_params = [{'params': model.get_1x_lr_params(), 'lr': args.lr},
{'params': model.get_10x_lr_params(), 'lr': args.lr * 10}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params, momentum=args.momentum,
weight_decay=args.weight_decay, nesterov=args.nesterov)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(Path.db_root_dir(args.dataset), args.dataset+'_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset, self.train_loader, self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
if args.densecrfloss >0:
self.densecrflosslayer = DenseCRFLoss(weight=args.densecrfloss, sigma_rgb=args.sigma_rgb, sigma_xy=args.sigma_xy, scale_factor=args.rloss_scale)
print(self.densecrflosslayer)
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr,
args.epochs, len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model, device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'" .format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
train_celoss = 0.0
train_crfloss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
softmax = nn.Softmax(dim=1)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
croppings = (target!=254).float()
target[target==254]=255
# Pixels labeled 255 are those unlabeled pixels. Padded region are labeled 254.
# see function RandomScaleCrop in dataloaders/custom_transforms.py for the detail in data preprocessing
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
celoss = self.criterion(output, target)
if self.args.densecrfloss ==0:
loss = celoss
else:
probs = softmax(output)
denormalized_image = denormalizeimage(sample['image'], mean=(0.485, 0.456, 0.406), std=(0.229, 0.224, 0.225))
densecrfloss = self.densecrflosslayer(denormalized_image,probs,croppings)
if self.args.cuda:
densecrfloss = densecrfloss.cuda()
loss = celoss + densecrfloss
train_crfloss += densecrfloss.item()
loss.backward()
self.optimizer.step()
train_loss += loss.item()
train_celoss += celoss.item()
tbar.set_description('Train loss: %.3f = CE loss %.3f + CRF loss: %.3f'
% (train_loss / (i + 1),train_celoss / (i + 1),train_crfloss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(), i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset, image, target, output, global_step)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
#if self.args.no_val:
if self.args.save_interval:
# save checkpoint every interval epoch
is_best = False
if (epoch + 1) % self.args.save_interval == 0:
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best, filename='checkpoint_epoch_{}.pth.tar'.format(str(epoch+1)))
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
target[target==254]=255
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = F.softmax(output, dim=1)
pred = output.data.cpu().numpy()
if self.args.post_process:
pool = mp.Pool(mp.cpu_count())
image = image.data.cpu().numpy().astype(np.uint8).transpose(0, 2, 3, 1)
pred = pool.map(dense_crf_wrapper, zip(image, pred))
pool.close()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def main():
saver = Saver(args)
# set log
log_format = '%(asctime)s %(message)s'
logging.basicConfig(level=logging.INFO,
format=log_format,
datefmt='%m/%d %I:%M:%S %p',
filename=os.path.join(saver.experiment_dir, 'log.txt'),
filemode='w')
console = logging.StreamHandler()
console.setLevel(logging.INFO)
logging.getLogger().addHandler(console)
if not torch.cuda.is_available():
logging.info('no gpu device available')
sys.exit(1)
np.random.seed(args.seed)
random.seed(args.seed)
torch.manual_seed(args.seed)
torch.cuda.manual_seed(args.seed)
torch.cuda.set_device(args.gpu)
cudnn.benchmark = True
cudnn.enabled = True
saver.create_exp_dir(scripts_to_save=glob.glob('*.py') +
glob.glob('*.sh') + glob.glob('*.yml'))
saver.save_experiment_config()
summary = TensorboardSummary(saver.experiment_dir)
writer = summary.create_summary()
best_pred = 0
logging.info(args)
device = torch.device('cuda')
criterion = nn.CrossEntropyLoss()
criterion = criterion.to(device)
maml = Meta(args, criterion).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
logging.info(maml)
logging.info('Total trainable tensors: {}'.format(num))
# batch_size here means total episode number
mini = MiniImagenet(args.data_path,
mode='train',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batch_size=args.batch_size,
resize=args.img_size)
mini_valid = MiniImagenet(args.data_path,
mode='train',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batch_size=args.test_batch_size,
resize=args.img_size)
train_loader = DataLoader(mini,
args.meta_batch_size,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True)
valid_loader = DataLoader(mini_valid,
args.meta_test_batch_size,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True)
for epoch in range(args.epoch):
# fetch batch_size num of episode each time
logging.info('--------- Epoch: {} ----------'.format(epoch))
train_accs_theta, train_accs_w = meta_train(train_loader, maml, device,
epoch, writer)
logging.info(
'[Epoch: {}]\t Train acc_theta: {}\t Train acc_w: {}'.format(
epoch, train_accs_theta, train_accs_w))
test_accs_theta, test_accs_w = meta_test(valid_loader, maml, device,
epoch, writer)
logging.info(
'[Epoch: {}]\t Test acc_theta: {}\t Test acc_w: {}'.format(
epoch, test_accs_theta, test_accs_w))
genotype = maml.model.genotype()
logging.info('genotype = %s', genotype)
logging.info(F.softmax(maml.model.alphas_normal, dim=-1))
logging.info(F.softmax(maml.model.alphas_reduce, dim=-1))
# Save the best meta model.
new_pred = test_accs_w[-1]
if new_pred > best_pred:
is_best = True
best_pred = new_pred
else:
is_best = False
saver.save_checkpoint(
{
'epoch':
epoch,
'state_dict_w':
maml.module.state_dict()
if isinstance(maml, nn.DataParallel) else maml.state_dict(),
'state_dict_theta':
maml.model.arch_parameters(),
'best_pred':
best_pred,
}, is_best)
class trainNew(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
weight = None
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
# Define network
model = AutoDeeplab(num_classes=self.nclass,
num_layers=12,
criterion=self.criterion,
filter_multiplier=self.args.filter_multiplier)
optimizer = torch.optim.SGD(model.weight_parameters(),
args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay)
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler,
args.lr,
args.epochs,
len(self.train_loader),
min_lr=args.min_lr)
# TODO: Figure out if len(self.train_loader) should be devided by two ? in other module as well
# Using cuda
if args.cuda:
if (torch.cuda.device_count() > 1 or args.load_parallel):
self.model = torch.nn.DataParallel(self.model.cuda())
patch_replication_callback(self.model)
self.model = self.model.cuda()
print('cuda finished')
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
# if the weights are wrapped in module object we have to clean it
if args.clean_module:
self.model.load_state_dict(checkpoint['state_dict'])
state_dict = checkpoint['state_dict']
new_state_dict = OrderedDict()
for k, v in state_dict.items():
name = k[7:] # remove 'module.' of dataparallel
new_state_dict[name] = v
self.model.load_state_dict(new_state_dict)
else:
if (torch.cuda.device_count() > 1 or args.load_parallel):
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
# Define network G and D (the output of Deeplab is score for each class, and the score is
# passed through softmax layer before going into PatchGAN)
#================================== network ==============================================#
network_G = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
softmax_layer = torch.nn.Softmax(dim=1)
network_D = networks.define_D(24,
64,
netD='basic',
n_layers_D=3,
norm='batch',
init_type='normal',
init_gain=0.02,
gpu_ids=self.args.gpu_ids)
#=========================================================================================#
train_params = [{
'params': network_G.get_1x_lr_params(),
'lr': args.lr
}, {
'params': network_G.get_10x_lr_params(),
'lr': args.lr * 10
}]
# Define Optimizer
#================================== network ==============================================#
optimizer_G = torch.optim.SGD(train_params,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov=args.nesterov)
optimizer_D = torch.optim.Adam(network_D.parameters(),
lr=0.0002,
betas=(0.5, 0.999))
#=========================================================================================#
# Define whether to use class balanced weights for criterion
if args.use_balanced_weights:
classes_weights_path = os.path.join(
Path.db_root_dir(args.dataset),
args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
#=================== GAN criterion and Segmentation criterion ======================================#
self.criterionGAN = networks.GANLoss('vanilla').to(
args.gpu_ids[0]) ### set device manually
self.criterionSeg = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
#===================================================================================================#
self.network_G, self.softmax_layer, self.network_D = network_G, softmax_layer, network_D
self.optimizer_G, self.optimizer_D = optimizer_G, optimizer_D
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader))
# Using cuda
if args.cuda:
self.network_G = torch.nn.DataParallel(
self.network_G, device_ids=self.args.gpu_ids)
patch_replication_callback(self.network_G)
self.network_G = self.network_G.cuda()
#====================== no resume ===================================================================#
# Resuming checkpoint
self.best_pred = 0.0
# if args.resume is not None:
# if not os.path.isfile(args.resume):
# raise RuntimeError("=> no checkpoint found at '{}'" .format(args.resume))
# checkpoint = torch.load(args.resume)
# args.start_epoch = checkpoint['epoch']
# if args.cuda:
# self.network_G.module.load_state_dict(checkpoint['state_dict'])
# else:
# self.network_G.load_state_dict(checkpoint['state_dict'])
# if not args.ft:
# self.optimizer.load_state_dict(checkpoint['optimizer'])
# self.best_pred = checkpoint['best_pred']
# print("=> loaded checkpoint '{}' (epoch {})"
# .format(args.resume, checkpoint['epoch']))
#=======================================================================================================#
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
G_Seg_loss = 0.0
G_GAN_loss = 0.0
D_fake_loss = 0.0
D_real_loss = 0.0
#======================== train mode to set batch normalization =======================================#
self.network_G.train()
self.network_D.train()
#======================================================================================================#
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer_G, i, epoch,
self.best_pred) # tune learning rate
#================================= GAN training process (pix2pix) ============================================#
# prepare tensors
output_score = self.network_G(
image) # score map for each class in pixels
output = self.softmax_layer(output_score) # label for each pixel
target_one_hot = self.make_one_hot(
target,
C=21) # change target to one-hot coding to feed into PatchGAN
fake_AB = torch.cat((image, output), 1)
real_AB = torch.cat((image, target_one_hot), 1)
# ================================================================== #
# Train the discriminator #
# ================================================================== #
# freeze G, unfreese D
self.set_requires_grad(self.network_G, False)
self.set_requires_grad(self.softmax_layer, False)
self.set_requires_grad(self.network_D, True)
# reset D grad
self.optimizer_D.zero_grad()
# fake input
pred_fake = self.network_D(fake_AB.detach())
loss_D_fake = self.criterionGAN(pred_fake, False)
# real input
pred_real = self.network_D(real_AB)
loss_D_real = self.criterionGAN(pred_real, True)
# combine loss and calculate gradients
loss_D = (loss_D_fake + loss_D_real) / (2.0 * self.args.batch_size)
loss_D.backward()
self.optimizer_D.step()
# ================================================================== #
# Train the generator #
# ================================================================== #
# unfreeze G, freese D
self.set_requires_grad(self.network_G, True)
self.set_requires_grad(self.softmax_layer, True)
self.set_requires_grad(self.network_D, False)
# reset G grad
self.optimizer_G.zero_grad()
# fake input should let D predict 1
pred_fake = self.network_D(fake_AB)
loss_G_GAN = self.criterionGAN(pred_fake, True)
# Segmentation loss G(A) = B
loss_G_CE = self.criterionSeg(
output_score, target
) * self.args.lambda_Seg # 1.0 is lambda_CE (weight for cross entropy loss)
# combine loss and calculate gradients
# lambda = 0.1
loss_G = loss_G_GAN * self.args.lambda_GAN / self.args.batch_size + loss_G_CE
loss_G.backward()
self.optimizer_G.step()
# display G and D loss
G_Seg_loss += loss_G_CE.item()
G_GAN_loss += loss_G_GAN.item()
D_fake_loss += loss_D_fake.item()
D_real_loss += loss_D_real.item()
#===================================================================================================#
tbar.set_description(
'G_Seg_loss: %.3f G_GAN_los: %.3f D_fake_loss: %.3f D_real_loss: %.3f'
% (G_Seg_loss / (i + 1), G_GAN_loss / (i + 1), D_fake_loss /
(i + 1), D_real_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss_G_CE.item(),
i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset,
image, target, output,
global_step)
self.writer.add_scalar('train/total_loss_epoch', G_Seg_loss, epoch)
print('Training:')
print(' [Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print(' Train G_Seg_Loss: %.3f' % G_Seg_loss)
#======================================= no save checkpoint ==================#
# if self.args.no_val:
# # save checkpoint every epoch
# is_best = False
# self.saver.save_checkpoint({
# 'epoch': epoch + 1,
# 'state_dict': self.model.module.state_dict(),
# 'optimizer': self.optimizer.state_dict(),
# 'best_pred': self.best_pred,
# }, is_best)
#=============================================================================#
def validation(self, epoch):
self.network_G.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.network_G(image)
loss = self.criterionSeg(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print(' [Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print(" Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(
Acc, Acc_class, mIoU, FWIoU))
print(' Test G_Seg_Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
#============== only save checkpoint for best model ======================#
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict_G': self.network_G.module.state_dict(),
'state_dict_D': self.network_D.state_dict(),
'optimizer_G': self.optimizer_G.state_dict(),
'optimizer_D': self.optimizer_D.state_dict(),
'best_pred': self.best_pred,
}, is_best)
#=======================================================#
#========================== new method ===============================#
def set_requires_grad(self, nets, requires_grad=False):
"""Set requies_grad=Fasle for all the networks to avoid unnecessary computations
Parameters:
nets (network list) -- a list of networks
requires_grad (bool) -- whether the networks require gradients or not
"""
if not isinstance(nets, list):
nets = [nets]
for net in nets:
if net is not None:
for param in net.parameters():
param.requires_grad = requires_grad
def make_one_hot(self, labels, C=21):
labels[labels == 255] = 0.0
labels = labels.unsqueeze(1)
one_hot = torch.cuda.FloatTensor(labels.size(0),
C,
labels.size(2),
labels.size(3),
device=labels.device).zero_()
target = one_hot.scatter_(1, labels.long(), 1.0)
return target
class trainNew(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
cell_path = os.path.join(args.saved_arch_path, 'genotype.npy')
network_path_space = os.path.join(args.saved_arch_path,
'network_path_space.npy')
new_cell_arch = np.load(cell_path)
new_network_arch = np.load(network_path_space)
# Define network
model = newModel(network_arch=new_network_arch,
cell_arch=new_cell_arch,
num_classes=self.nclass,
num_layers=12)
# output_stride=args.out_stride,
# sync_bn=args.sync_bn,
# freeze_bn=args.freeze_bn)
# TODO: look into these
# TODO: ALSO look into different param groups as done int deeplab below
# train_params = [{'params': model.get_1x_lr_params(), 'lr': args.lr},
# {'params': model.get_10x_lr_params(), 'lr': args.lr * 10}]
#
train_params = [{'params': model.parameters(), 'lr': args.lr}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov=args.nesterov)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(
Path.db_root_dir(args.dataset),
args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(
args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader)) #TODO: use min_lr ?
# TODO: Figure out if len(self.train_loader) should be devided by two ? in other module as well
# Using cuda
if args.cuda:
if (torch.cuda.device_count() > 1 or args.load_parallel):
self.model = torch.nn.DataParallel(self.model.cuda())
patch_replication_callback(self.model)
self.model = self.model.cuda()
print('cuda finished')
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
# if the weights are wrapped in module object we have to clean it
if args.clean_module:
self.model.load_state_dict(checkpoint['state_dict'])
state_dict = checkpoint['state_dict']
new_state_dict = OrderedDict()
for k, v in state_dict.items():
name = k[7:] # remove 'module.' of dataparallel
new_state_dict[name] = v
self.model.load_state_dict(new_state_dict)
else:
if (torch.cuda.device_count() > 1 or args.load_parallel):
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(),
i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset,
image, target, output,
global_step)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(
Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
# 使用tensorboardX可视化
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
# kwargs = {'num_workers': args.workers, 'pin_memory': True}
kwargs = {'num_workers': 0, 'pin_memory': True}
#self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
self.train_loader, self.val_loader, self.nclass = make_data_loader(
args, **kwargs)
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(
Path.db_root_dir(args.dataset),
args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
# Define Criterion
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
if args.model_name == 'unet':
#model = UNet_ac(args.n_channels, args.n_filters, args.n_class).cuda()
model = UNet_SNws(args.n_channels, args.n_filters, args.n_class,
args.using_movavg, args.using_bn).cuda()
model = UNet_bn(args.n_channels, args.n_filters,
args.n_class).cuda()
optimizer = torch.optim.AdamW(model.parameters(),
lr=args.lr,
weight_decay=args.weight_decay)
#optimizer = torch.optim.AdamW(model.parameters(), lr=args.arch_lr, betas=(0.9, 0.999), weight_decay=args.weight_decay)
#optimizer = torch.optim.SGD(model.parameters(), lr=args.lr, momentum=args.momentum, weight_decay=args.weight_decay, nesterov=args.nesterov)
# elif args.model_name == 'hunet':
# model = HUNet(args.n_channels, args.n_filters, args.n_class, args.using_movavg, args.using_bn).cuda()
# optimizer = torch.optim.AdamW(model.parameters(), lr=args.lr, weight_decay=args.weight_decay)
elif args.model_name == 'unet3+':
model = UNet3p_SNws(args.n_channels, args.n_filters, args.n_class,
args.using_movavg, args.using_bn).cuda()
optimizer = torch.optim.AdamW(model.parameters(),
lr=args.lr,
weight_decay=args.weight_decay)
elif args.model_name == 'unet3+_aspp':
#model = UNet3p_aspp(args.n_channels, args.n_filters, args.n_class, args.using_movavg, args.using_bn).cuda()
#model = UNet3p_aspp_SNws(args.n_channels, args.n_filters, args.n_class, args.using_movavg, args.using_bn).cuda()
#model = UNet3p_res_aspp_SNws(args.n_channels, args.n_filters, args.n_class, args.using_movavg, args.using_bn).cuda()
model = UNet3p_res_edge_aspp_SNws(args.n_channels, args.n_filters,
args.n_class, args.using_movavg,
args.using_bn).cuda()
optimizer = torch.optim.AdamW(model.parameters(),
lr=args.lr,
weight_decay=args.weight_decay)
elif args.model_name == 'unet3+_ocr':
model = UNet3p_res_ocr_SNws(args.n_channels, args.n_filters,
args.n_class, args.using_movavg,
args.using_bn).cuda()
optimizer = torch.optim.AdamW(model.parameters(),
lr=args.lr,
weight_decay=args.weight_decay)
# elif args.model_name == 'unet3+_resnest_aspp':
# model = UNet3p_resnest_aspp(args.n_channels, args.n_filters, args.n_class, args.using_movavg, args.using_bn).cuda()
# optimizer = torch.optim.AdamW(model.parameters(), lr=args.lr, weight_decay=args.weight_decay)
elif args.model_name == 'gscnn':
model = GSCNN(args.n_channels, args.n_filters, args.n_class,
args.using_movavg, args.using_bn).cuda()
optimizer = torch.optim.AdamW(model.parameters(),
lr=args.lr,
weight_decay=args.weight_decay)
elif args.model_name == 'pspnet':
model = PSPNet(args.n_channels, args.n_filters,
args.n_class).cuda()
optimizer = torch.optim.AdamW(model.parameters(),
lr=args.lr,
weight_decay=args.weight_decay)
elif args.model_name == 'segnet':
model = Segnet(args.n_channels, args.n_filters,
args.n_class).cuda()
optimizer = torch.optim.AdamW(model.parameters(),
lr=args.lr,
weight_decay=args.weight_decay)
elif args.model_name == 'hrnet':
MODEL = {
'ALIGN_CORNERS': True,
'EXTRA': {
'FINAL_CONV_KERNEL':
1, # EXTRA 具体定义了模型的结果，包括 4 个 STAGE，各自的参数
'STAGE1': {
'NUM_MODULES': 1, # HighResolutionModule 重复次数
'NUM_BRANCHES': 1, # 分支数
'BLOCK': 'BOTTLENECK',
'NUM_BLOCKS': 4,
'NUM_CHANNELS': 64,
'FUSE_METHOD': 'SUM'
},
'STAGE2': {
'NUM_MODULES': 1,
'NUM_BRANCHES': 2,
'BLOCK': 'BASIC',
'NUM_BLOCKS': [4, 4],
'NUM_CHANNELS': [48, 96],
'FUSE_METHOD': 'SUM'
},
'STAGE3': {
'NUM_MODULES': 4,
'NUM_BRANCHES': 3,
'BLOCK': 'BASIC',
'NUM_BLOCKS': [4, 4, 4],
'NUM_CHANNELS': [48, 96, 192],
'FUSE_METHOD': 'SUM'
},
'STAGE4': {
'NUM_MODULES': 3,
'NUM_BRANCHES': 4,
'BLOCK': 'BASIC',
'NUM_BLOCKS': [4, 4, 4, 4],
'NUM_CHANNELS': [48, 96, 192, 384],
'FUSE_METHOD': 'SUM'
}
}
}
model = HighResolutionNet(args.n_channels, args.n_filters,
args.n_class, MODEL).cuda()
# model.init_weights()
optimizer = torch.optim.AdamW(model.parameters(),
lr=args.lr,
weight_decay=args.weight_decay)
elif args.model_name == 'hrnet+ocr':
MODEL = {
'ALIGN_CORNERS': True,
'EXTRA': {
'FINAL_CONV_KERNEL':
1, # EXTRA 具体定义了模型的结果，包括 4 个 STAGE，各自的参数
'STAGE1': {
'NUM_MODULES': 1, # HighResolutionModule 重复次数
'NUM_BRANCHES': 1, # 分支数
'BLOCK': 'BOTTLENECK',
'NUM_BLOCKS': 4,
'NUM_CHANNELS': 64,
'FUSE_METHOD': 'SUM'
},
'STAGE2': {
'NUM_MODULES': 1,
'NUM_BRANCHES': 2,
'BLOCK': 'BASIC',
'NUM_BLOCKS': [4, 4],
'NUM_CHANNELS': [48, 96],
'FUSE_METHOD': 'SUM'
},
'STAGE3': {
'NUM_MODULES': 4,
'NUM_BRANCHES': 3,
'BLOCK': 'BASIC',
'NUM_BLOCKS': [4, 4, 4],
'NUM_CHANNELS': [48, 96, 192],
'FUSE_METHOD': 'SUM'
},
'STAGE4': {
'NUM_MODULES': 3,
'NUM_BRANCHES': 4,
'BLOCK': 'BASIC',
'NUM_BLOCKS': [4, 4, 4, 4],
'NUM_CHANNELS': [48, 96, 192, 384],
'FUSE_METHOD': 'SUM'
}
}
}
# model = HighResolutionNet_OCR(args.n_channels, args.n_filters, args.n_class, MODEL).cuda()
model = HighResolutionNet_OCR_SNws(args.n_channels, args.n_filters,
args.n_class, MODEL).cuda()
# model.init_weights()
optimizer = torch.optim.AdamW(model.parameters(),
lr=args.lr,
weight_decay=args.weight_decay)
elif args.model_name == 'deeplabv3+':
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
backbone = model.backbone
# backbone.conv1 = nn.Conv2d(3, 32, kernel_size=(3, 3), stride=(2, 2), padding=(1, 1), bias=False)
print('change the input channels', backbone.conv1)
train_params = [{
'params': model.get_1x_lr_params(),
'lr': args.lr
}, {
'params': model.get_10x_lr_params(),
'lr': args.lr * 10
}]
#optimizer = torch.optim.SGD(train_params, momentum=args.momentum,
# weight_decay=args.weight_decay, nesterov=args.nesterov)
optimizer = torch.optim.AdamW(train_params,
weight_decay=args.weight_decay)
#optimizer = torch.optim.AdamW(train_params, lr=args.arch_lr, betas=(0.9, 0.999), weight_decay=args.weight_decay)
#elif args.model_name == 'autodeeplab':
#model = AutoDeeplab(args.n_class, 12, self.criterion, crop_size=args.crop_size)
#optimizer = torch.optim.AdamW(model.weight_parameters(), lr=args.lr, weight_decay=args.weight_decay)
#optimizer = torch.optim.SGD(model.weight_parameters(), lr=args.lr, momentum=args.momentum, weight_decay=args.weight_decay)
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
#self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr,
# args.epochs, len(self.train_loader))
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader))
# Using cuda
if args.cuda:
print(self.args.gpu_ids)
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
# print(image.shape)
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(),
i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
# self.summary.visualize_image(self.writer, self.args.dataset, image, target, output, global_step)
self.writer.add_scalar('train/total_loss_epoch', train_loss,
epoch) # 保存标量值
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % (train_loss / len(tbar)))
# print('Loss: %.3f' % (train_loss / i))
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset() # 创建全为0的混淆矩阵
tbar = tqdm(self.val_loader, desc='\r') # 回车符
val_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
# image, target = sample[0], sample[1]
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
val_loss += loss.item()
tbar.set_description('Val loss: %.3f' % (val_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1) # 按行
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union(
) # 频权交并比
self.writer.add_scalar('val/total_loss_epoch', val_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(
Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % (val_loss / len(tbar)))
new_pred = FWIoU # mIoU
# log
logfile = os.path.join('/home/wzj/mine_cloud_14/', 'log.txt')
log_file = open(logfile, 'a')
if epoch == 0:
log_file.seek(0)
log_file.truncate()
log_file.write(self.args.model_name + '\n')
log_file.write('Epoch: %d, ' % (epoch + 1))
if new_pred < self.best_pred:
log_file.write(
'Acc: {}, Acc_class: {}, mIoU: {}, fwIoU: {}, best_fwIoU: {}, '
.format(Acc, Acc_class, mIoU, FWIoU, self.best_pred))
else:
log_file.write(
'Acc: {}, Acc_class: {}, mIoU: {}, fwIoU: {}, best_fwIoU: {}, '
.format(Acc, Acc_class, mIoU, FWIoU, new_pred))
log_file.write('Loss: %.3f\n' % (val_loss / len(tbar)))
if epoch == 199: # 499
log_file.close()
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint(
{
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class Trainer(object):
def __init__(self, args):
self.args = args
self.saver = Saver(args)
self.saver.save_experiment_config()
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
self.logger = self.saver.create_logger()
kwargs = {'num_workers': args.workers, 'pin_memory': False}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
self.model = EDCNet(args.rgb_dim, args.event_dim, num_classes=self.nclass, use_bn=True)
train_params = [{'params': self.model.random_init_params(),
'lr': 10*args.lr, 'weight_decay': 10*args.weight_decay},
{'params': self.model.fine_tune_params(),
'lr': args.lr, 'weight_decay': args.weight_decay}]
self.optimizer = torch.optim.Adam(train_params, lr=args.lr, weight_decay=args.weight_decay)
if args.cuda:
self.model = torch.nn.DataParallel(self.model, device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.to(self.args.device)
if args.use_balanced_weights:
root_dir = Path.db_root_dir(args.dataset)[0] if isinstance(Path.db_root_dir(args.dataset), list) else Path.db_root_dir(args.dataset)
classes_weights_path = os.path.join(root_dir,
args.dataset + '_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset, self.train_loader, self.nclass, classes_weights_path)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.criterion_event = SegmentationLosses(weight=weight, cuda=args.cuda).build_loss(mode='event')
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs, len(self.train_loader), warmup_epochs=5)
self.evaluator = Evaluator(self.nclass, self.logger)
self.saver.save_model_summary(self.model)
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(args.resume))
checkpoint = torch.load(args.resume, map_location='cuda:0')
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(args.resume, checkpoint['epoch']))
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
target = sample['label']
image = sample['image']
event = sample['event']
if self.args.cuda:
target = target.to(self.args.device)
image = image.to(self.args.device)
event = event.to(self.args.device)
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output, output_event = self.model(image)
loss = self.criterion(output, target)
loss_event = self.criterion_event(output_event, event)
loss += (loss_event * 0.1)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(), i + num_img_tr * epoch)
self.writer.add_scalar('train/total_loss_epoch', train_loss/num_img_tr, epoch)
self.logger.info('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + target.data.shape[0]))
self.logger.info('Loss: %.3f' % (train_loss/num_img_tr))
if self.args.no_val:
is_best = False
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
num_img_val = len(self.val_loader)
for i, (sample, _) in enumerate(tbar):
target = sample['label']
image = sample['image']
event = sample['event']
if self.args.cuda:
target = target.to(self.args.device)
image = image.to(self.args.device)
event = event.to(self.args.device)
with torch.no_grad():
output, output_event = self.model(image)
loss = self.criterion(output, target)
loss_event = self.criterion_event(output_event, event)
loss += (loss_event * 20)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
self.evaluator.add_batch(target, pred)
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss/len(self.val_loader), epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
self.logger.info('Validation:')
self.logger.info('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + target.data.shape[0]))
self.logger.info("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(Acc, Acc_class, mIoU, FWIoU))
self.logger.info('Loss: %.3f' % (test_loss/num_img_val))
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# denormalize for detph image
self.mean_depth = torch.as_tensor(0.12176,dtype=torch.float32,device='cpu')
self.std_depth = torch.as_tensor(0.09752,dtype=torch.float32,device='cpu')
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': False}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
# Define network
resnet = resnet18(pretrained=True, efficient=False, use_bn= True)
model = RFNet(resnet, num_classes=self.nclass, use_bn=True)
train_params = [{'params': model.random_init_params()},
{'params': model.fine_tune_params(), 'lr': args.lr, 'weight_decay':args.weight_decay}]
# Define Optimizer
optimizer = torch.optim.Adam(train_params, lr=args.lr * 4,
weight_decay=args.weight_decay * 4)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(Path.db_root_dir(args.dataset), args.dataset+'_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset, self.train_loader, self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
# Define loss function
self.criterion = SegmentationLosses(weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs, len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model, device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'" .format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
if self.args.depth:
image, depth, target = sample['image'], sample['depth'], sample['label']
else:
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
if self.args.depth:
depth = depth.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
if self.args.depth:
output = self.model(image, depth)
else:
output = self.model(image)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(), i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
if self.args.depth:
self.summary.visualize_image(self.writer, self.args.dataset, image, target, output, global_step)
depth_display=depth[0].cpu().unsqueeze(0)
depth_display = depth_display.mul_(self.std_depth).add_(self.mean_depth)
depth_display = depth_display.numpy()
depth_display = depth_display*255
depth_display = depth_display.astype(np.uint8)
self.writer.add_image('Depth', depth_display, global_step)
else:
self.summary.visualize_image(self.writer, self.args.dataset, image, target, output, global_step)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, (sample, img_path) in enumerate(tbar):
if self.args.depth:
image, depth, target = sample['image'], sample['depth'], sample['label']
else:
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
if self.args.depth:
depth = depth.cuda()
with torch.no_grad():
if self.args.depth:
output = self.model(image, depth)
else:
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class Tester(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(
args, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
# init D
model_D = FCDiscriminator(num_classes=19)
train_params = [{
'params': model.get_1x_lr_params(),
'lr': args.lr
}, {
'params': model.get_10x_lr_params(),
'lr': args.lr * 10
}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov=args.nesterov)
optimizer_D = torch.optim.Adam(model_D.parameters(),
lr=1e-4,
betas=(0.9, 0.99))
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = 'dataloders\\datasets\\' + args.dataset + '_classes_weights.npy'
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset,
self.train_loader,
self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(
weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.bce_loss = torch.nn.BCEWithLogitsLoss()
self.model, self.optimizer = model, optimizer
self.model_D, self.optimizer_D = model_D, optimizer_D
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr, args.epochs,
len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model,
device_ids=self.args.gpu_ids)
self.model_D = torch.nn.DataParallel(self.model_D,
device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
patch_replication_callback(self.model_D)
self.model = self.model.cuda()
self.model_D = self.model_D.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(
args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})".format(
args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def imgsaver(self, img, imgname):
im1 = np.uint8(img.transpose(1, 2, 0)).squeeze()
#filename_list = sorted(os.listdir(self.args.test_img_root))
valid_classes = [
7, 8, 11, 12, 13, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 31,
32, 33
]
class_map = dict(zip(range(19), valid_classes))
im1_np = np.uint8(np.zeros([512, 512]))
for _validc in range(19):
im1_np[im1 == _validc] = class_map[_validc]
saveim1 = Image.fromarray(im1_np, mode='L')
saveim1 = saveim1.resize((1280, 640), Image.NEAREST)
saveim1.save('result/' + imgname)
palette = [[128, 64, 128], [244, 35, 232], [70, 70, 70],
[102, 102, 156], [190, 153, 153], [153, 153, 153],
[250, 170, 30], [220, 220, 0], [107, 142, 35],
[152, 251, 152], [70, 130, 180], [220, 20, 60], [255, 0, 0],
[0, 0, 142], [0, 0, 70], [0, 60, 100], [0, 80, 100],
[0, 0, 230], [119, 11, 32]]
#[0,0,0]]
class_color_map = dict(zip(range(19), palette))
im2_np = np.uint8(np.zeros([512, 512, 3]))
for _validc in range(19):
im2_np[im1 == _validc] = class_color_map[_validc]
saveim2 = Image.fromarray(im2_np)
saveim2 = saveim2.resize((1280, 640), Image.NEAREST)
saveim2.save('result/' + imgname[:-4] + '_color.png')
# print('saving: '+filename_list[idx])
def test(self, epoch):
self.model.eval()
tbar = tqdm(self.test_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image = sample['image']
if self.args.cuda:
image = image.cuda()
with torch.no_grad():
output = self.model(image)
tbar.set_description('Test loss: %.3f' % (test_loss / (i + 1)))
pred = output.data.cpu().numpy()
pred = np.argmax(pred, axis=1)
self.imgsaver(pred, sample['name'][0])
# Fast test during the training
print('Test:')
print('[Epoch: %d, numImages: %5d]' %
(epoch, i * self.args.test_batch_size + image.data.shape[0]))
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.train_loader, self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
# Define network
model = DeepLab(num_classes=self.nclass,
backbone=args.backbone,
output_stride=args.out_stride,
sync_bn=args.sync_bn,
freeze_bn=args.freeze_bn)
train_params = [{'params': model.get_1x_lr_params(), 'lr': args.lr},
{'params': model.get_10x_lr_params(), 'lr': args.lr * 10}]
# Define Optimizer
optimizer = torch.optim.SGD(train_params, momentum=args.momentum,
weight_decay=args.weight_decay, nesterov=args.nesterov)
# Define Criterion
# whether to use class balanced weights
if args.use_balanced_weights:
classes_weights_path = os.path.join(Path.db_root_dir(args.dataset), args.dataset+'_classes_weights.npy')
if os.path.isfile(classes_weights_path):
weight = np.load(classes_weights_path)
else:
weight = calculate_weigths_labels(args.dataset, self.train_loader, self.nclass)
weight = torch.from_numpy(weight.astype(np.float32))
else:
weight = None
self.criterion = SegmentationLosses(weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr,
args.epochs, len(self.train_loader))
# Using cuda
if args.cuda:
self.model = torch.nn.DataParallel(self.model, device_ids=self.args.gpu_ids)
patch_replication_callback(self.model)
self.model = self.model.cuda()
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'" .format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
if args.cuda:
self.model.module.load_state_dict(checkpoint['state_dict'])
else:
self.model.load_state_dict(checkpoint['state_dict'])
if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
# Clear start epoch if fine-tuning
if args.ft:
args.start_epoch = 0
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
loss = self.criterion(output, target)
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
self.writer.add_scalar('train/total_loss_iter', loss.item(), i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr // 10) == 0:
global_step = i + num_img_tr * epoch
self.summary.visualize_image(self.writer, self.args.dataset, image, target, output, global_step)
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self, epoch):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
for i, sample in enumerate(tbar):
image, target = sample['image'], sample['label']
if self.args.cuda:
image, target = image.cuda(), target.cuda()
with torch.no_grad():
output = self.model(image)
loss = self.criterion(output, target)
test_loss += loss.item()
pred = output.data.cpu().numpy()
target = target.cpu().numpy()
pred = np.argmax(pred, axis=1)
# Add batch sample into evaluator
self.evaluator.add_batch(target, pred)
# Fast test during the training
Acc = self.evaluator.Pixel_Accuracy()
Acc_class = self.evaluator.Pixel_Accuracy_Class()
mIoU = self.evaluator.Mean_Intersection_over_Union()
FWIoU = self.evaluator.Frequency_Weighted_Intersection_over_Union()
self.writer.add_scalar('val/total_loss_epoch', test_loss, epoch)
self.writer.add_scalar('val/mIoU', mIoU, epoch)
self.writer.add_scalar('val/Acc', Acc, epoch)
self.writer.add_scalar('val/Acc_class', Acc_class, epoch)
self.writer.add_scalar('val/fwIoU', FWIoU, epoch)
print('Validation:')
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print("Acc:{}, Acc_class:{}, mIoU:{}, fwIoU: {}".format(Acc, Acc_class, mIoU, FWIoU))
print('Loss: %.3f' % test_loss)
new_pred = mIoU
if new_pred > self.best_pred:
is_best = True
self.best_pred = new_pred
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
class Trainer(object):
def __init__(self, args):
self.args = args
# Define Saver
if args.distributed:
if args.local_rank == 0:
self.saver = Saver(args)
else:
self.saver = Saver(args)
self.saver.save_experiment_config()
# Define Tensorboard Summary
self.summary = TensorboardSummary(self.saver.experiment_dir)
self.writer = self.summary.create_summary()
# PATH = args.path
# Define Dataloader
kwargs = {'num_workers': args.workers, 'pin_memory': True}
self.val_loader, self.nclass = make_data_loader(args, **kwargs)
# self.val_loader, self.test_loader, self.nclass = make_data_loader(args, **kwargs)
# Define network
model = SCNN(nclass=self.nclass, backbone=args.backbone, output_stride=args.out_stride, cuda=args.cuda,
extension=args.ext)
# Define Optimizer
# optimizer = torch.optim.SGD(model.parameters(),args.lr, momentum=args.momentum,
# weight_decay=args.weight_decay, nesterov=args.nesterov)
optimizer = torch.optim.Adam(model.parameters(), args.lr, weight_decay=args.weight_decay)
# model, optimizer = amp.initialize(model,optimizer,opt_level="O1")
# Define Criterion
weight = None
# criterion = SegmentationLosses(weight=weight, cuda=args.cuda).build_loss(mode=args.loss_type)
# self.criterion = SegmentationCELosses(weight=weight, cuda=args.cuda)
# self.criterion = SegmentationCELosses(weight=weight, cuda=args.cuda)
# self.criterion = FocalLoss(gamma=0, alpha=[0.2, 0.98], img_size=512*512)
self.criterion1 = FocalLoss(gamma=5, alpha=[0.2, 0.98], img_size=512 * 512)
self.criterion2 = disc_loss(delta_v=0.5, delta_d=3.0, param_var=1.0, param_dist=1.0,
param_reg=0.001, EMBEDDING_FEATS_DIMS=21, image_shape=[512, 512])
self.model, self.optimizer = model, optimizer
# Define Evaluator
self.evaluator = Evaluator(self.nclass)
# Define lr scheduler
self.scheduler = LR_Scheduler(args.lr_scheduler, args.lr,
args.epochs, len(self.val_loader), local_rank=args.local_rank)
# Using cuda
# if args.cuda:
self.model = self.model.cuda()
# if args.distributed:
# self.model = DistributedDataParallel(self.model)
# self.model = torch.nn.DataParallel(self.model)
# patch_replication_callback(self.model)
# Resuming checkpoint
self.best_pred = 0.0
if args.resume is not None:
filename = 'checkpoint.pth.tar'
args.resume = os.path.join(args.ckpt_dir, filename)
if not os.path.isfile(args.resume):
raise RuntimeError("=> no checkpoint found at '{}'".format(args.resume))
checkpoint = torch.load(args.resume)
args.start_epoch = checkpoint['epoch']
# if args.cuda:
new_state_dict = OrderedDict()
for k, v in checkpoint['state_dict'].items():
name = k[7:] # remove `module.`
new_state_dict[name] = v
checkpoint['state_dict'] = new_state_dict
self.model.load_state_dict(checkpoint['state_dict'])
# else:
# self.model.load_state_dict(checkpoint['state_dict'])
# if not args.ft:
self.optimizer.load_state_dict(checkpoint['optimizer'])
self.best_pred = checkpoint['best_pred']
print("=> loaded checkpoint '{}' (epoch {})"
.format(args.resume, checkpoint['epoch']))
def training(self, epoch):
train_loss = 0.0
self.model.train()
tbar = tqdm(self.train_loader)
num_img_tr = len(self.train_loader)
max_instances = 1
for i, sample in enumerate(tbar):
# image, target = sample['image'], sample['label']
image, target, ins_target = sample['image'], sample['bin_label'], sample['label']
# _target = target.cpu().numpy()
# if np.max(_target) > max_instances:
# max_instances = np.max(_target)
# print(max_instances)
if self.args.cuda:
image, target = image.cuda(), target.cuda()
self.scheduler(self.optimizer, i, epoch, self.best_pred)
self.optimizer.zero_grad()
output = self.model(image)
# if i % 10==0:
# misc.imsave('/mfc/user/1623600/.temp6/train_{:s}_epoch:{}_i:{}.png'.format(str(self.args.distributed),epoch,i),np.transpose(image[0].cpu().numpy(),(1,2,0)))
# os.chmod('/mfc/user/1623600/.temp6/train_{:s}_epoch:{}_i:{}.png'.format(str(self.args.distributed),epoch,i),0o777)
# self.criterion = DataParallelCriterion(self.criterion)
loss1 = self.criterion1(output, target)
loss2 = self.criterion2(output, ins_target)
reg_lambda = 0.01
loss = loss1 + 10 * loss2
# loss = loss1
output = output[1]
# loss.back
# with amp.scale_loss(loss, self.optimizer) as scaled_loss:
# scaled_loss.backward()
loss.backward()
self.optimizer.step()
train_loss += loss.item()
tbar.set_description('Train loss: %.3f' % (train_loss / (i + 1)))
if self.args.distributed:
if self.args.local_rank == 0:
self.writer.add_scalar('train/total_loss_iter', loss.item(), i + num_img_tr * epoch)
else:
self.writer.add_scalar('train/total_loss_iter', loss.item(), i + num_img_tr * epoch)
# Show 10 * 3 inference results each epoch
if i % (num_img_tr / 10) == 0:
global_step = i + num_img_tr * epoch
if self.args.distributed:
if self.args.local_rank == 0:
self.summary.visualize_image(self.writer, self.args.dataset, image, target, output, global_step)
else:
self.summary.visualize_image(self.writer, self.args.dataset, image, target, output, global_step)
if self.args.distributed:
if self.args.local_rank == 0:
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
else:
self.writer.add_scalar('train/total_loss_epoch', train_loss, epoch)
if self.args.local_rank == 0:
print('[Epoch: %d, numImages: %5d]' % (epoch, i * self.args.batch_size + image.data.shape[0]))
print('Loss: %.3f' % train_loss)
if self.args.distributed:
if self.args.local_rank == 0:
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
else:
if self.args.no_val:
# save checkpoint every epoch
is_best = False
self.saver.save_checkpoint({
'epoch': epoch + 1,
'state_dict': self.model.module.state_dict(),
'optimizer': self.optimizer.state_dict(),
'best_pred': self.best_pred,
}, is_best)
def validation(self):
self.model.eval()
self.evaluator.reset()
tbar = tqdm(self.val_loader, desc='\r')
test_loss = 0.0
destination_path = os.path.join(self.args.path,'seg_lane')
if not os.path.isdir(destination_path):
os.mkdir(destination_path,0o777)
postprocessor = LanePostprocess.LaneNetPostProcessor()
aa_sequence = mvpuai.MSequence()
for i, sample in enumerate(tbar):
# image, target = sample['image'], sample['label']
image, lbl_path, resized_img = sample['image'], sample['lbl_path'], sample['resized_img']
img = [image[0][...,_ind*512: (_ind+1)*512] for _ind in range(4)]
img = np.stack(img+[resized_img[0]],axis=0)
img = torch.from_numpy(img)
if self.args.cuda:
img = img.cuda()
image = image.cuda()
with torch.no_grad():
output = self.model(img)
pred = output[1]
_upsampled=torch.nn.Upsample(size=[512,2048])
overall_pred = pred[4,...].view([1,2,512,512])
_upsampled=_upsampled(overall_pred)
upsampled_final = torch.zeros(2,1024,2048)
upsampled_final[:,512:,:512] = pred[0,...]
upsampled_final[:, 512:, 512:1024] = pred[1, ...]
upsampled_final[:, 512:, 1024:1024+512] = pred[2, ...]
upsampled_final[:, 512:, 1024 + 512:2048] = pred[3, ...]
upsampled_final = upsampled_final.view([1, 2, 1024, 2048])
upsampled_final[..., 512:, :] = _upsampled
upsampled_final = np.argmax(upsampled_final, axis=1)
pred = upsampled_final.data.cpu().numpy()
instance_seg = output[0]
_upsampled_instance = torch.nn.Upsample(size=[512, 2048])
overall_pred = instance_seg[4, ...].view([1, 21, 512, 512])
_upsampled_instance = _upsampled_instance(overall_pred)
upsampled_final_instance = torch.zeros(21, 1024, 2048)
upsampled_final_instance[:, 512:, :512] = instance_seg[0, ...]
upsampled_final_instance[:, 512:, 512:1024] = instance_seg[1, ...]
upsampled_final_instance[:, 512:, 1024:1024 + 512] = instance_seg[2, ...]
upsampled_final_instance[:, 512:, 1024 + 512:2048] = instance_seg[3, ...]
upsampled_final_instance= upsampled_final_instance.view([1, 21, 1024, 2048])
upsampled_final_instance[..., 512:, :] = _upsampled_instance
instance_seg = upsampled_final_instance.data.cpu().numpy()
# instance_seg = np.argmax(upsampled_final_instance, axis=1)
# Add batch sample into evaluator
# if i % 100 == 0:
resized_img = np.squeeze(resized_img)
pred = np.squeeze(pred)
instance_seg = np.squeeze(instance_seg)
# resized_img = np.transpose(resized_img.cpu().numpy(), (1, 2, 0))
instance_seg = np.transpose(instance_seg, (1, 2, 0))
postprocess_result = postprocessor.postprocess(
binary_seg_result=pred,
instance_seg_result=instance_seg,
source_image=image
)
image = self.de_normalize(np.transpose(image[0].cpu().numpy(),(1,2,0)))
# misc.imsave(destination_path + '/' + lbl_path[0],
# np.transpose(image.cpu().numpy(), (1, 2, 0)) + 3 * np.asarray(
# np.stack((pred, pred, pred), axis=-1), dtype=np.uint8))
show_source_image = np.zeros((1024, 2048, 3))
show_source_image[512:, ...] = image
image = show_source_image
predicted_lanes = postprocess_result['lane_pts']
# predicted_lanes = predicted_lanes[...,0]
# bsp_lanes = []
predicted_lanes = [np.asarray(pred_lane) for pred_lane in predicted_lanes]
tensor_curvepts, tensor_cpts =inference(bsplineMat=predicted_lanes,i=i)
tmp_mask = np.zeros(shape=(image.shape[0], image.shape[1]), dtype=np.uint8)
src_lane_pts = np.asarray(tensor_curvepts)
for lane_index, coords in enumerate(src_lane_pts):
tmp_mask[tuple((np.int_(coords[:, 1]), np.int_(coords[:, 0])))] = lane_index + 1
bsppts_mask = np.stack((tmp_mask, tmp_mask, tmp_mask), axis=-1)
# misc.imsave(destination_path + '/mask_' + lbl_path[0],
# postprocess_result['mobis_mask_image'])
# misc.imsave(destination_path + '/' + lbl_path[0],
# 50*postprocess_result['mask_image']+50*postprocess_result['lanepts_mask'])
misc.imsave(destination_path + '/' + lbl_path[0],
postprocess_result['mobis_mask_image'])
try:
os.chmod(destination_path + '/'+ lbl_path[0],0o777)
except:
pass
aa_sequence.add_frame(MFrame(i))
for idx in range(tensor_cpts.shape[1]):
_Obj = mvpuai.get_object_by_name(MString.Frame.Object.Type.LANE)
_Obj.subclass_id = 1
_Obj.instance_id = idx
_list = []
for ind in range(10):
_list.append(Point(int(tensor_cpts[0,idx,ind]), int(tensor_cpts[1,idx,ind])))
_ctrl_pts = list([point.x, point.y] for point in _list)
# b_spline = BSpline.Curve()
# b_spline.degree = 4
# b_spline.set_ctrlpts(_ctrl_pts)
#
# b_spline.knotvector = utilities.generate_knot_vector(b_spline.degree, len(_ctrl_pts))
# b_spline.delta = 0.001
# b_spline.evaluate()
_cpts = []
for _cpt in _ctrl_pts:
_cpts.append(_cpt[0])
_cpts.append(_cpt[1])
_Obj.b_spline = _cpts
aa_sequence.frame_list[-1].add_object(_Obj)
# .add_frame(MFrame(0))
self.write_json(aa_sequence)
def de_normalize(self,img,mean=(0.485, 0.456, 0.406), std=(0.229, 0.224, 0.225)):
# img = np.array(img).astype(np.float32)
img *= std
img += mean
img *= 255.0
return img
def write_json(self,aa_sequence):
output_file_path = os.path.join(self.args.path,'json') + '/annotation_bs.json'
mvpuai.write_json(output_file_path, aa_sequence)
try:
os.chmod(output_file_path, 0o777)
except :
pass