def main(args):
writer = SummaryWriter(log_dir=args.tensorboard_log_dir)
w, h = map(int, args.input_size.split(','))
w_target, h_target = map(int, args.input_size_target.split(','))
joint_transform = joint_transforms.Compose([
joint_transforms.FreeScale((h, w)),
joint_transforms.RandomHorizontallyFlip(),
])
normalize = ((0.485, 0.456, 0.406), (0.229, 0.224, 0.225))
input_transform = standard_transforms.Compose([
standard_transforms.ToTensor(),
standard_transforms.Normalize(*normalize),
])
target_transform = extended_transforms.MaskToTensor()
restore_transform = standard_transforms.ToPILImage()
if '5' in args.data_dir:
dataset = GTA5DataSetLMDB(
args.data_dir,
args.data_list,
joint_transform=joint_transform,
transform=input_transform,
target_transform=target_transform,
)
else:
dataset = CityscapesDataSetLMDB(
args.data_dir,
args.data_list,
joint_transform=joint_transform,
transform=input_transform,
target_transform=target_transform,
)
loader = data.DataLoader(dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True)
val_dataset = CityscapesDataSetLMDB(
args.data_dir_target,
args.data_list_target,
# joint_transform=joint_transform,
transform=input_transform,
target_transform=target_transform)
val_loader = data.DataLoader(val_dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True)
upsample = nn.Upsample(size=(h_target, w_target),
mode='bilinear',
align_corners=True)
net = resnet101_ibn_a_deeplab(args.model_path_prefix,
n_classes=args.n_classes)
# optimizer = get_seg_optimizer(net, args)
optimizer = torch.optim.SGD(net.parameters(), args.learning_rate,
args.momentum)
net = torch.nn.DataParallel(net)
criterion = torch.nn.CrossEntropyLoss(size_average=False,
ignore_index=args.ignore_index)
num_batches = len(loader)
for epoch in range(args.num_epoch):
loss_rec = AverageMeter()
data_time_rec = AverageMeter()
batch_time_rec = AverageMeter()
tem_time = time.time()
for batch_index, batch_data in enumerate(loader):
show_fig = (batch_index + 1) % args.show_img_freq == 0
iteration = batch_index + 1 + epoch * num_batches
# poly_lr_scheduler(
# optimizer=optimizer,
# init_lr=args.learning_rate,
# iter=iteration - 1,
# lr_decay_iter=args.lr_decay,
# max_iter=args.num_epoch*num_batches,
# power=args.poly_power,
# )
net.train()
# net.module.freeze_bn()
img, label, name = batch_data
img = img.cuda()
label_cuda = label.cuda()
data_time_rec.update(time.time() - tem_time)
output = net(img)
loss = criterion(output, label_cuda)
optimizer.zero_grad()
loss.backward()
optimizer.step()
loss_rec.update(loss.item())
writer.add_scalar('A_seg_loss', loss.item(), iteration)
batch_time_rec.update(time.time() - tem_time)
tem_time = time.time()
if (batch_index + 1) % args.print_freq == 0:
print(
f'Epoch [{epoch+1:d}/{args.num_epoch:d}][{batch_index+1:d}/{num_batches:d}]\t'
f'Time: {batch_time_rec.avg:.2f} '
f'Data: {data_time_rec.avg:.2f} '
f'Loss: {loss_rec.avg:.2f}')
if show_fig:
base_lr = optimizer.param_groups[0]["lr"]
output = torch.argmax(output, dim=1).detach()[0, ...].cpu()
fig, axes = plt.subplots(2, 1, figsize=(12, 14))
axes = axes.flat
axes[0].imshow(colorize_mask(output.numpy()))
axes[0].set_title(name[0])
axes[1].imshow(colorize_mask(label[0, ...].numpy()))
axes[1].set_title(f'seg_true_{base_lr:.6f}')
writer.add_figure('A_seg', fig, iteration)
mean_iu = test_miou(net, val_loader, upsample,
'./ae_seg/dataset/info.json')
torch.save(
net.module.state_dict(),
os.path.join(args.save_path_prefix,
f'{epoch:d}_{mean_iu*100:.0f}.pth'))
writer.close()
def main():
"""Create the model and start the training."""
args = get_arguments()
w, h = map(int, args.input_size.split(','))
w_target, h_target = map(int, args.input_size_target.split(','))
# Create network
student_net = FCN8s(args.num_classes, args.model_path_prefix)
student_net = torch.nn.DataParallel(student_net)
student_net = student_net.cuda()
mean_std = ([103.939, 116.779, 123.68], [1.0, 1.0, 1.0])
train_joint_transform = joint_transforms.Compose([
joint_transforms.FreeScale((h, w)),
])
input_transform = standard_transforms.Compose([
extended_transforms.FlipChannels(),
standard_transforms.ToTensor(),
standard_transforms.Lambda(lambda x: x.mul_(255)),
standard_transforms.Normalize(*mean_std),
])
val_input_transform = standard_transforms.Compose([
extended_transforms.FreeScale((h, w)),
extended_transforms.FlipChannels(),
standard_transforms.ToTensor(),
standard_transforms.Lambda(lambda x: x.mul_(255)),
standard_transforms.Normalize(*mean_std),
])
target_transform = extended_transforms.MaskToTensor()
# show img
restore_transform = standard_transforms.Compose([
extended_transforms.DeNormalize(*mean_std),
standard_transforms.Lambda(lambda x: x.div_(255)),
standard_transforms.ToPILImage(),
extended_transforms.FlipChannels(),
])
visualize = standard_transforms.ToTensor()
if '5' in args.data_dir:
src_dataset = GTA5DataSetLMDB(
args.data_dir,
args.data_list,
joint_transform=train_joint_transform,
transform=input_transform,
target_transform=target_transform,
)
else:
src_dataset = CityscapesDataSetLMDB(
args.data_dir,
args.data_list,
joint_transform=train_joint_transform,
transform=input_transform,
target_transform=target_transform,
)
src_loader = data.DataLoader(src_dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True)
tgt_val_dataset = CityscapesDataSetLMDB(
args.data_dir_target,
args.data_list_target,
# no val resize
# joint_transform=val_joint_transform,
transform=val_input_transform,
target_transform=target_transform,
)
tgt_val_loader = data.DataLoader(
tgt_val_dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True,
)
optimizer = optim.SGD(student_net.parameters(),
lr=args.learning_rate,
momentum=args.momentum,
weight_decay=args.weight_decay)
# optimizer = optim.Adam(
# student_net.parameters(), lr=args.learning_rate,
# weight_decay=args.weight_decay
# )
student_params = list(student_net.parameters())
# interp = partial(
# nn.functional.interpolate,
# size=(input_size[1], input_size[0]), mode='bilinear', align_corners=True
# )
# interp_tgt = partial(
# nn.functional.interpolate,
# size=(h_target, w_target), mode='bilinear', align_corners=True
# )
upsample = nn.Upsample(size=(h_target, w_target), mode='bilinear')
n_class = args.num_classes
# src_criterion = torch.nn.CrossEntropyLoss(
# ignore_index=255, reduction='sum')
src_criterion = torch.nn.CrossEntropyLoss(ignore_index=255,
size_average=False)
num_batches = len(src_loader)
highest = 0
for epoch in range(args.num_epoch):
cls_loss_rec = AverageMeter()
aug_loss_rec = AverageMeter()
mask_rec = AverageMeter()
confidence_rec = AverageMeter()
miu_rec = AverageMeter()
data_time_rec = AverageMeter()
batch_time_rec = AverageMeter()
# load_time_rec = AverageMeter()
# trans_time_rec = AverageMeter()
tem_time = time.time()
for batch_index, src_data in enumerate(src_loader):
student_net.train()
optimizer.zero_grad()
# train with source
# src_images, src_label, src_img_name, (load_time, trans_time) = src_data
src_images, src_label, src_img_name = src_data
src_images = src_images.cuda()
src_label = src_label.cuda()
data_time_rec.update(time.time() - tem_time)
src_output = student_net(src_images)
# src_output = interp(src_output)
# Segmentation Loss
cls_loss_value = src_criterion(src_output, src_label)
cls_loss_value /= src_images.shape[0]
total_loss = cls_loss_value
total_loss.backward()
optimizer.step()
_, predict_labels = torch.max(src_output, 1)
lbl_pred = predict_labels.detach().cpu().numpy()
lbl_true = src_label.detach().cpu().numpy()
_, _, _, mean_iu, _ = _evaluate(lbl_pred, lbl_true, 19)
cls_loss_rec.update(cls_loss_value.detach_().item())
miu_rec.update(mean_iu)
# load_time_rec.update(torch.mean(load_time).item())
# trans_time_rec.update(torch.mean(trans_time).item())
batch_time_rec.update(time.time() - tem_time)
tem_time = time.time()
if (batch_index + 1) % args.print_freq == 0:
print(
f'Epoch [{epoch+1:d}/{args.num_epoch:d}][{batch_index+1:d}/{num_batches:d}]\t'
f'Time: {batch_time_rec.avg:.2f} '
f'Data: {data_time_rec.avg:.2f} '
# f'Load: {load_time_rec.avg:.2f} '
# f'Trans: {trans_time_rec.avg:.2f} '
f'Mean iu: {miu_rec.avg*100:.1f} '
f'CLS: {cls_loss_rec.avg:.2f}')
miu = test_miou(student_net, tgt_val_loader, upsample,
'./dataset/info.json')
if miu > highest:
torch.save(student_net.module.state_dict(),
osp.join(args.snapshot_dir, f'final_fcn.pth'))
highest = miu
print('>' * 50 + f'save highest with {miu:.2%}')
def main(args):
writer = SummaryWriter(log_dir=args.tensorboard_log_dir)
w, h = map(int, args.input_size.split(','))
w_target, h_target = map(int, args.input_size_target.split(','))
joint_transform = joint_transforms.Compose([
joint_transforms.FreeScale((h, w)),
joint_transforms.RandomHorizontallyFlip(),
])
normalize = ((0.485, 0.456, 0.406), (0.229, 0.224, 0.225))
input_transform = standard_transforms.Compose([
standard_transforms.ToTensor(),
standard_transforms.Normalize(*normalize),
])
target_transform = extended_transforms.MaskToTensor()
restore_transform = standard_transforms.ToPILImage()
if '5' in args.data_dir:
dataset = GTA5DataSetLMDB(
args.data_dir, args.data_list,
joint_transform=joint_transform,
transform=input_transform, target_transform=target_transform,
)
else:
dataset = CityscapesDataSetLMDB(
args.data_dir, args.data_list,
joint_transform=joint_transform,
transform=input_transform, target_transform=target_transform,
)
loader = data.DataLoader(
dataset, batch_size=args.batch_size,
shuffle=True, num_workers=args.num_workers, pin_memory=True
)
val_dataset = CityscapesDataSetLMDB(
args.data_dir_target, args.data_list_target,
# joint_transform=joint_transform,
transform=input_transform, target_transform=target_transform
)
val_loader = data.DataLoader(
val_dataset, batch_size=args.batch_size,
shuffle=False, num_workers=args.num_workers, pin_memory=True
)
upsample = nn.Upsample(size=(h_target, w_target),
mode='bilinear', align_corners=True)
net = PSP(
nclass = args.n_classes, backbone='resnet101',
root=args.model_path_prefix, norm_layer=BatchNorm2d,
)
params_list = [
{'params': net.pretrained.parameters(), 'lr': args.learning_rate},
{'params': net.head.parameters(), 'lr': args.learning_rate*10},
{'params': net.auxlayer.parameters(), 'lr': args.learning_rate*10},
]
optimizer = torch.optim.SGD(params_list,
lr=args.learning_rate,
momentum=args.momentum,
weight_decay=args.weight_decay)
criterion = SegmentationLosses(nclass=args.n_classes, aux=True, ignore_index=255)
# criterion = SegmentationMultiLosses(nclass=args.n_classes, ignore_index=255)
net = DataParallelModel(net).cuda()
criterion = DataParallelCriterion(criterion).cuda()
logger = utils.create_logger(args.tensorboard_log_dir, 'PSP_train')
scheduler = utils.LR_Scheduler(args.lr_scheduler, args.learning_rate,
args.num_epoch, len(loader), logger=logger,
lr_step=args.lr_step)
net_eval = Eval(net)
num_batches = len(loader)
best_pred = 0.0
for epoch in range(args.num_epoch):
loss_rec = AverageMeter()
data_time_rec = AverageMeter()
batch_time_rec = AverageMeter()
tem_time = time.time()
for batch_index, batch_data in enumerate(loader):
scheduler(optimizer, batch_index, epoch, best_pred)
show_fig = (batch_index+1) % args.show_img_freq == 0
iteration = batch_index+1+epoch*num_batches
net.train()
img, label, name = batch_data
img = img.cuda()
label_cuda = label.cuda()
data_time_rec.update(time.time()-tem_time)
output = net(img)
loss = criterion(output, label_cuda)
optimizer.zero_grad()
loss.backward()
optimizer.step()
loss_rec.update(loss.item())
writer.add_scalar('A_seg_loss', loss.item(), iteration)
batch_time_rec.update(time.time()-tem_time)
tem_time = time.time()
if (batch_index+1) % args.print_freq == 0:
print(
f'Epoch [{epoch+1:d}/{args.num_epoch:d}][{batch_index+1:d}/{num_batches:d}]\t'
f'Time: {batch_time_rec.avg:.2f} '
f'Data: {data_time_rec.avg:.2f} '
f'Loss: {loss_rec.avg:.2f}'
)
# if show_fig:
# # base_lr = optimizer.param_groups[0]["lr"]
# output = torch.argmax(output[0][0], dim=1).detach()[0, ...].cpu()
# # fig, axes = plt.subplots(2, 1, figsize=(12, 14))
# # axes = axes.flat
# # axes[0].imshow(colorize_mask(output.numpy()))
# # axes[0].set_title(name[0])
# # axes[1].imshow(colorize_mask(label[0, ...].numpy()))
# # axes[1].set_title(f'seg_true_{base_lr:.6f}')
# # writer.add_figure('A_seg', fig, iteration)
# output_mask = np.asarray(colorize_mask(output.numpy()))
# label = np.asarray(colorize_mask(label[0,...].numpy()))
# image_out = np.concatenate([output_mask, label])
# writer.add_image('A_seg', image_out, iteration)
mean_iu = test_miou(net_eval, val_loader, upsample,
'./style_seg/dataset/info.json')
torch.save(
net.module.state_dict(),
os.path.join(args.save_path_prefix, f'{epoch:d}_{mean_iu*100:.0f}.pth')
)
writer.close()
def main(args):
writer = SummaryWriter(log_dir=args.tensorboard_log_dir)
w, h = map(int, args.input_size.split(','))
w_target, h_target = map(int, args.input_size_target.split(','))
joint_transform = joint_transforms.Compose([
joint_transforms.FreeScale((h, w)),
joint_transforms.RandomHorizontallyFlip(),
])
normalize = ((0.5, 0.5, 0.5), (0.5, 0.5, 0.5))
tgt_input_transform = standard_transforms.Compose([
standard_transforms.ToTensor(),
standard_transforms.Normalize(*normalize),
])
target_transform = extended_transforms.MaskToTensor()
restore_transform = standard_transforms.ToPILImage()
if args.seg_net == 'fcn':
mean_std = ([103.939, 116.779, 123.68], [1.0, 1.0, 1.0])
val_input_transform = standard_transforms.Compose([
extended_transforms.FreeScale((h, w)),
extended_transforms.FlipChannels(),
standard_transforms.ToTensor(),
standard_transforms.Lambda(lambda x: x.mul_(255)),
standard_transforms.Normalize(*mean_std),
])
else:
normalize = ((0.485, 0.456, 0.406), (0.229, 0.224, 0.225))
val_input_transform = standard_transforms.Compose([
extended_transforms.FreeScale((h, w)),
standard_transforms.ToTensor(),
standard_transforms.Normalize(*normalize),
])
tgt_dataset = Cityscapes16DataSetLMDB(
args.data_dir_target,
args.data_list_target,
joint_transform=joint_transform,
transform=tgt_input_transform,
target_transform=target_transform,
)
tgt_loader = data.DataLoader(tgt_dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True,
drop_last=True)
val_dataset = Cityscapes16DataSetLMDB(
args.data_dir_val,
args.data_list_val,
transform=val_input_transform,
target_transform=target_transform,
)
val_loader = data.DataLoader(
val_dataset,
batch_size=args.batch_size,
shuffle=False,
num_workers=args.num_workers,
pin_memory=True,
)
upsample = nn.Upsample(size=(h_target, w_target),
mode='bilinear',
align_corners=True)
if args.seg_net == 'fcn':
net = FCN8s(args.n_classes, pretrained=False)
net_static = FCN8s(args.n_classes, pretrained=False)
file_name = os.path.join(args.resume, args.fcn_name)
# for name, param in net.named_parameters():
# if 'feat' not in name:
# param.requires_grad = False
elif args.seg_net == 'deeplab_ibn':
deeplab = resnet101_ibn_a_deeplab()
file_name = os.path.join(args.resume, 'deeplab_ibn.pth')
net.load_state_dict(torch.load(file_name))
net_static.load_state_dict(torch.load(file_name))
for param in net_static.parameters():
param.requires_grad = False
optimizer = torch.optim.SGD(net.parameters(), args.learning_rate,
args.momentum)
net = torch.nn.DataParallel(net.cuda())
net_static = torch.nn.DataParallel(net_static.cuda())
# criterion = torch.nn.MSELoss()
# criterion = torch.nn.SmoothL1Loss()
criterion = torch.nn.CrossEntropyLoss(ignore_index=255)
gen_model = define_G()
gen_model.load_state_dict(
torch.load(os.path.join(args.resume, args.gen_name)))
gen_model.eval()
for param in gen_model.parameters():
param.requires_grad = False
gen_model = torch.nn.DataParallel(gen_model.cuda())
# for seg net
def normalize(x, mean=(0.485, 0.456, 0.406), std=(0.229, 0.224, 0.225)):
if args.seg_net == 'fcn':
mean = [103.939, 116.779, 123.68]
flip_x = torch.cat(
[x[:, 2 - i, :, :].unsqueeze(1) for i in range(3)],
dim=1,
)
new_x = []
for tem_x in flip_x:
tem_new_x = []
for c, m in zip(tem_x, mean):
tem_new_x.append(c.mul(255.0).sub(m).unsqueeze(0))
new_x.append(torch.cat(tem_new_x, dim=0).unsqueeze(0))
new_x = torch.cat(new_x, dim=0)
return new_x
else:
for tem_x in x:
for c, m, s in zip(tem_x, mean, std):
c = c.sub(m).div(s)
return x
def de_normalize(x, mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5)):
new_x = []
for tem_x in x:
tem_new_x = []
for c, m, s in zip(tem_x, mean, std):
tem_new_x.append(c.mul(s).add(s).unsqueeze(0))
new_x.append(torch.cat(tem_new_x, dim=0).unsqueeze(0))
new_x = torch.cat(new_x, dim=0)
return new_x
# ###################################################
# direct test with gen
# ###################################################
print('Direct Test')
mean_iu = test_miou(net, val_loader, upsample, './dataset/info.json')
direct_input_transform = standard_transforms.Compose([
extended_transforms.FreeScale((h, w)),
standard_transforms.ToTensor(),
standard_transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5)),
])
val_dataset_direct = Cityscapes16DataSetLMDB(
args.data_dir_val,
args.data_list_val,
transform=direct_input_transform,
target_transform=target_transform,
)
val_loader_direct = data.DataLoader(val_dataset_direct,
batch_size=args.batch_size,
shuffle=False,
num_workers=args.num_workers,
pin_memory=True,
drop_last=False)
class NewModel(object):
def __init__(self, gen_net, val_net):
self.gen_net = gen_net
self.val_net = val_net
def __call__(self, x):
x = de_normalize(self.gen_net(x))
new_x = normalize(x)
out = self.val_net(new_x)
return out
def eval(self):
self.gen_net.eval()
self.val_net.eval()
new_model = NewModel(gen_model, net)
print('Test with Gen')
mean_iu = test_miou(new_model, val_loader_direct, upsample,
'./dataset/info.json')
# return
num_batches = len(tgt_loader)
highest = 0
for epoch in range(args.num_epoch):
loss_rec = AverageMeter()
data_time_rec = AverageMeter()
batch_time_rec = AverageMeter()
tem_time = time.time()
for batch_index, batch_data in enumerate(tgt_loader):
iteration = batch_index + 1 + epoch * num_batches
net.train()
net_static.eval() # fine-tune use eval
img, _, name = batch_data
img = img.cuda()
data_time_rec.update(time.time() - tem_time)
with torch.no_grad():
gen_output = gen_model(img)
gen_seg_output_logits = net_static(
normalize(de_normalize(gen_output)))
ori_seg_output_logits = net(normalize(de_normalize(img)))
prob = torch.nn.Softmax(dim=1)
max_value, label = torch.max(prob(gen_seg_output_logits), dim=1)
label_mask = torch.zeros(label.shape, dtype=torch.uint8).cuda()
for tem_label in range(19):
tem_mask = label == tem_label
if torch.sum(tem_mask) < 5:
continue
value_vec = max_value[tem_mask]
large_value = torch.topk(
value_vec, int(args.percent * value_vec.shape[0]))[0][0]
large_mask = max_value > large_value
label_mask = label_mask | (tem_mask & large_mask)
label[label_mask] = 255
# loss = criterion(ori_seg_output_logits, gen_seg_output_logits)
loss = criterion(ori_seg_output_logits, label)
optimizer.zero_grad()
loss.backward()
optimizer.step()
loss_rec.update(loss.item())
writer.add_scalar('A_seg_loss', loss.item(), iteration)
batch_time_rec.update(time.time() - tem_time)
tem_time = time.time()
if (batch_index + 1) % args.print_freq == 0:
print(
f'Epoch [{epoch+1:d}/{args.num_epoch:d}][{batch_index+1:d}/{num_batches:d}]\t'
f'Time: {batch_time_rec.avg:.2f} '
f'Data: {data_time_rec.avg:.2f} '
f'Loss: {loss_rec.avg:.2f}')
if iteration % args.checkpoint_freq == 0:
mean_iu = test_miou(net,
val_loader,
upsample,
'./dataset/info.json',
print_results=False)
if mean_iu > highest:
torch.save(
net.module.state_dict(),
os.path.join(args.save_path_prefix,
'cityscapes_best_fcn.pth'))
highest = mean_iu
print(f'save fcn model with {mean_iu:.2%}')
print(('-' * 100 + '\n') * 3)
print('>' * 50 + 'Final Model')
net.module.load_state_dict(
torch.load(
os.path.join(args.save_path_prefix, 'cityscapes_best_fcn.pth')))
mean_iu = test_miou(net, val_loader, upsample, './dataset/info.json')
writer.close()
def train(self, src_loader, tgt_loader, val_loader, writer):
print('>'*50+'Direct Test')
direct_model = _AddNorm(self.seg, self.de_normalize, self.fcn_normalize)
mean_iu = test_miou(
direct_model, val_loader,
direct_model.upsample, self.info_json,
)
highest_miu = 0
tgt_domain_label = 1
src_domain_label = 0
num_batches = min(len(src_loader), len(tgt_loader))
# self.G_optimizer.param_groups[0]['lr'] *= 10
# self.D_optimizer.param_groups[0]['lr'] *= 10
# self.D_optimizer.param_groups[1]['lr'] *= 10
for epoch in range(self.opt.warm_up_epoch):
for batch_index, batch_data in enumerate(zip(src_loader, tgt_loader)):
self.G.train()
src_batch, tgt_batch = batch_data
src_img, _, src_name = src_batch
tgt_img, _, tgt_name = tgt_batch
src_img_cuda = src_img.cuda()
tgt_img_cuda = tgt_img.cuda()
rec_tgt = self.G(tgt_img_cuda) # output [-1,1]
rec_loss = self.mse_criterion(rec_tgt, tgt_img_cuda)
self.G_optimizer.zero_grad()
rec_loss.backward()
self.G_optimizer.step()
tgt_img_cuda = self.de_normalize(tgt_img_cuda).detach()
tgt_D_loss = self.compute_discrim_loss(
tgt_img_cuda, tgt_domain_label
)
rec_D_loss = self.compute_discrim_loss(
src_img_cuda, src_domain_label
)
D_loss = tgt_D_loss + rec_D_loss
self.D_optimizer.zero_grad()
D_loss.backward()
self.D_optimizer.step()
if (batch_index+1) % self.opt.print_freq == 0:
print(
f'Warm Up Epoch [{epoch+1:d}/{self.opt.warm_up_epoch:d}]'
f'[{batch_index+1:d}/{num_batches:d}]\t'
f'G Loss: {rec_loss.item():.2f} '
f'D Loss: {D_loss.item():.2f}'
)
# self.G_optimizer.param_groups[0]['lr'] /= 10
# self.D_optimizer.param_groups[0]['lr'] /= 10
# self.D_optimizer.param_groups[1]['lr'] /= 10
for epoch in range(self.opt.num_epoch):
content_loss_rec = AverageMeter()
style_loss1_rec = AverageMeter()
style_loss2_rec = AverageMeter()
data_time_rec = AverageMeter()
batch_time_rec = AverageMeter()
tem_time = time.time()
for batch_index, batch_data in enumerate(zip(src_loader, tgt_loader)):
iteration = batch_index+1+epoch*num_batches
self.G.train()
src_batch, tgt_batch = batch_data
src_img, _, src_name = src_batch
tgt_img, tgt_label, tgt_name = tgt_batch
src_img_cuda = src_img.cuda()
tgt_img_cuda = tgt_img.cuda()
data_time_rec.update(time.time()-tem_time)
rec_tgt = self.G(tgt_img_cuda) # output [-1,1]
if (batch_index+1) % self.opt.show_img_freq == 0:
rec_results = rec_tgt.detach().clone().cpu()
# return to [0,1], for VGG takes input [0,1]
rec_tgt_de_norm = self.de_normalize(rec_tgt)
'''
--------------------------------------------------
NOTICE:
DO NOT ADD DE-NORM HERE
WITHOUT NORM WE CAN ADD MORE NOISE TO CONTENT LOSS
--------------------------------------------------
'''
content_loss = self.compute_content_loss(rec_tgt_de_norm, tgt_img_cuda)
# style_loss1, style_loss2 =\
# self.compute_style_loss(rec_tgt, src_img_cuda)
style_loss1 = torch.zeros(1).cuda()
style_loss2 = torch.zeros(1).cuda()
loss_style = content_loss * self.lambda_values[0] +\
style_loss1 * self.lambda_values[1] +\
style_loss2 * self.lambda_values[2]
# adv train G
for param in self.D.parameters():
param.requires_grad = False
adv_tgt_rec_discrim_loss = self.compute_discrim_loss(
rec_tgt_de_norm, src_domain_label
)
G_loss = loss_style +\
adv_tgt_rec_discrim_loss * self.lambda_values[3]
self.G_optimizer.zero_grad()
G_loss.backward()
self.G_optimizer.step()
# train D
for param in self.D.parameters():
param.requires_grad = True
# add de norm here, since D do not need noise for training
tgt_img_cuda_de_norm = self.de_normalize(tgt_img_cuda)
rec_tgt_de_norm = rec_tgt_de_norm.detach()
tgt_rec_discrim_loss = self.compute_discrim_loss(
rec_tgt_de_norm, tgt_domain_label
)
# tgt_rec_discrim_loss = 0
tgt_discrim_loss = self.compute_discrim_loss(
tgt_img_cuda_de_norm, tgt_domain_label
)
src_discrim_loss = self.compute_discrim_loss(
src_img_cuda, src_domain_label
)
D_loss = 0.5 * (tgt_rec_discrim_loss + tgt_discrim_loss) +\
src_discrim_loss
self.D_optimizer.zero_grad()
D_loss.backward()
self.D_optimizer.step()
content_loss_rec.update(content_loss.item())
style_loss1_rec.update(style_loss1.item())
style_loss2_rec.update(style_loss2.item())
writer.add_scalar(
'AA_content_loss', content_loss.item(), iteration
)
writer.add_scalar(
'AA_style_loss_1', style_loss1.item(), iteration
)
writer.add_scalar(
'AA_style_loss_2', style_loss2.item(), iteration
)
writer.add_scalar(
'AA_G_loss', G_loss.item(), iteration
)
writer.add_scalar(
'AA_D_loss', D_loss.item(), iteration
)
batch_time_rec.update(time.time()-tem_time)
tem_time = time.time()
if (batch_index+1) % self.opt.print_freq == 0:
print(
f'Epoch [{epoch+1:d}/{self.opt.num_epoch:d}]'
f'[{batch_index+1:d}/{num_batches:d}]\t'
f'Time: {batch_time_rec.avg:.2f} '
f'Data: {data_time_rec.avg:.2f} '
f'Loss: {content_loss_rec.avg:.2f} '
f'Style1: {style_loss1_rec.avg:.2f} '
f'Style2: {style_loss2_rec.avg:.2f}'
)
if (batch_index+1) % self.opt.show_img_freq == 0:
fig, axes = plt.subplots(5, 1, figsize=(6, 20), dpi=120)
axes = axes.flat
axes[0].imshow(self.to_image(rec_results[0, ...]))
axes[0].set_title(f'rec')
axes[1].imshow(self.to_image(tgt_img[0, ...]))
axes[1].set_title(tgt_name[0])
rec_seg = self.compute_seg_map(rec_results).cpu().numpy() # already normed in to_image method
# tgt_img_cuda = self.de_normalize(tgt_img_cuda)
ori_seg = self.compute_seg_map(tgt_img_cuda_de_norm).cpu().numpy()
axes[2].imshow(colorize_mask(rec_seg[0, ...]))
# axes[2].set_title(f'rec_label_{rec_miu*100:.2f}')
axes[2].set_title(f'rec_label')
axes[3].imshow(colorize_mask(ori_seg[0, ...]))
# axes[3].set_title(f'ori_label_{ori_miu*100:.2f}')
axes[3].set_title(f'ori_label')
tgt_label = tgt_label.numpy()
gt_label = tgt_label[0, ...]
axes[4].imshow(colorize_mask(gt_label))
axes[4].set_title(f'gt_label')
writer.add_figure('A_rec', fig, iteration)
if iteration % self.opt.checkpoint_freq == 0:
combine_model = _CombineModel(
self.G, self.seg,
self.de_normalize, self.fcn_normalize,
)
mean_iu = test_miou(
combine_model, val_loader,
combine_model.upsample, self.info_json,
print_results=False
)
if mean_iu > highest_miu:
torch.save(
self.G.module.state_dict(),
os.path.join(self.opt.save_path_prefix, 'gen.pth')
)
highest_miu = mean_iu
print('>'*50+f'save highest with {mean_iu:.2%}')
def main():
"""Create the model and start the training."""
args = get_arguments()
w, h = map(int, args.input_size.split(','))
w_target, h_target = map(int, args.input_size_target.split(','))
# Create network
if args.bn_sync:
print('Using Sync BN')
deeplabv3.BatchNorm2d = partial(InPlaceABNSync, activation='none')
net = get_deeplabV3(args.num_classes, args.model_path_prefix)
if not args.bn_sync:
net.freeze_bn()
net = torch.nn.DataParallel(net)
net = net.cuda()
mean_std = ([104.00698793, 116.66876762, 122.67891434], [1.0, 1.0, 1.0])
train_joint_transform = joint_transforms.Compose([
joint_transforms.FreeScale((h, w)),
])
input_transform = standard_transforms.Compose([
extended_transforms.FlipChannels(),
standard_transforms.ToTensor(),
standard_transforms.Lambda(lambda x: x.mul_(255)),
standard_transforms.Normalize(*mean_std),
])
val_input_transform = standard_transforms.Compose([
extended_transforms.FreeScale((h, w)),
extended_transforms.FlipChannels(),
standard_transforms.ToTensor(),
standard_transforms.Lambda(lambda x: x.mul_(255)),
standard_transforms.Normalize(*mean_std),
])
target_transform = extended_transforms.MaskToTensor()
# show img
restore_transform = standard_transforms.Compose([
extended_transforms.DeNormalize(*mean_std),
standard_transforms.Lambda(lambda x: x.div_(255)),
standard_transforms.ToPILImage(),
extended_transforms.FlipChannels(),
])
visualize = standard_transforms.ToTensor()
if '5' in args.data_dir:
src_dataset = GTA5DataSetLMDB(
args.data_dir,
args.data_list,
joint_transform=train_joint_transform,
transform=input_transform,
target_transform=target_transform,
)
else:
src_dataset = CityscapesDataSetLMDB(
args.data_dir,
args.data_list,
joint_transform=train_joint_transform,
transform=input_transform,
target_transform=target_transform,
)
src_loader = data.DataLoader(src_dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True)
tgt_val_dataset = CityscapesDataSetLMDB(
args.data_dir_target,
args.data_list_target,
# no val resize
# joint_transform=val_joint_transform,
transform=val_input_transform,
target_transform=target_transform,
)
tgt_val_loader = data.DataLoader(
tgt_val_dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True,
)
# freeze bn
for module in net.module.modules():
if isinstance(module, torch.nn.BatchNorm2d):
for param in module.parameters():
param.requires_grad = False
optimizer = optim.SGD(
[{
'params': filter(lambda p: p.requires_grad,
net.module.parameters()),
'lr': args.learning_rate
}],
lr=args.learning_rate,
momentum=args.momentum,
weight_decay=args.weight_decay)
# optimizer = optim.Adam(
# net.parameters(), lr=args.learning_rate,
# weight_decay=args.weight_decay
# )
# interp = partial(
# nn.functional.interpolate,
# size=(input_size[1], input_size[0]), mode='bilinear', align_corners=True
# )
# interp_tgt = partial(
# nn.functional.interpolate,
# size=(h_target, w_target), mode='bilinear', align_corners=True
# )
upsample = nn.Upsample(size=(h_target, w_target), mode='bilinear')
n_class = args.num_classes
# criterion = torch.nn.CrossEntropyLoss(
# ignore_index=255, reduction='sum')
# criterion = torch.nn.CrossEntropyLoss(
# ignore_index=255, size_average=True
# )
criterion = CriterionDSN(ignore_index=255,
# size_average=False
)
num_batches = len(src_loader)
max_iter = args.iterations
i_iter = 0
highest_miu = 0
while True:
cls_loss_rec = AverageMeter()
aug_loss_rec = AverageMeter()
mask_rec = AverageMeter()
confidence_rec = AverageMeter()
miu_rec = AverageMeter()
data_time_rec = AverageMeter()
batch_time_rec = AverageMeter()
# load_time_rec = AverageMeter()
# trans_time_rec = AverageMeter()
tem_time = time.time()
for batch_index, src_data in enumerate(src_loader):
i_iter += 1
lr = adjust_learning_rate(args, optimizer, i_iter, max_iter)
net.train()
optimizer.zero_grad()
# train with source
# src_images, src_label, src_img_name, (load_time, trans_time) = src_data
src_images, src_label, src_img_name = src_data
src_images = src_images.cuda()
src_label = src_label.cuda()
data_time_rec.update(time.time() - tem_time)
src_output = net(src_images)
# src_output = interp(src_output)
# Segmentation Loss
cls_loss_value = criterion(src_output, src_label)
total_loss = cls_loss_value
total_loss.backward()
optimizer.step()
src_output = torch.nn.functional.upsample(input=src_output[0],
size=(h, w),
mode='bilinear',
align_corners=True)
_, predict_labels = torch.max(src_output, 1)
lbl_pred = predict_labels.detach().cpu().numpy()
lbl_true = src_label.detach().cpu().numpy()
_, _, _, mean_iu, _ = _evaluate(lbl_pred, lbl_true, 19)
cls_loss_rec.update(cls_loss_value.detach_().item())
miu_rec.update(mean_iu)
# load_time_rec.update(torch.mean(load_time).item())
# trans_time_rec.update(torch.mean(trans_time).item())
batch_time_rec.update(time.time() - tem_time)
tem_time = time.time()
if i_iter % args.print_freq == 0:
print(
# f'Epoch [{epoch+1:d}/{args.num_epoch:d}][{batch_index+1:d}/{num_batches:d}]\t'
f'Iter: [{i_iter}/{max_iter}]\t'
f'Time: {batch_time_rec.avg:.2f} '
f'Data: {data_time_rec.avg:.2f} '
# f'Load: {load_time_rec.avg:.2f} '
# f'Trans: {trans_time_rec.avg:.2f} '
f'Mean iu: {miu_rec.avg*100:.1f} '
f'CLS: {cls_loss_rec.avg:.2f}')
if i_iter % args.eval_freq == 0:
miu = test_miou(net, tgt_val_loader, upsample,
'./dataset/info.json')
if miu > highest_miu:
torch.save(
net.module.state_dict(),
osp.join(args.snapshot_dir,
f'{i_iter:d}_{miu*1000:.0f}.pth'))
highest_miu = miu
print(f'>>>>>>>>>Learning Rate {lr}<<<<<<<<<')
if i_iter == max_iter:
return