def get_loaders(config):
"""
update config.class_number
return loaders
"""
dataset_config = edict()
dataset_config.with_edge = False
dataset_config.resize_shape = config.input_shape
dataset_config = get_dataset_generalize_config(dataset_config,
config.semantic_dataset)
config.class_number = len(dataset_config.foreground_class_ids) + 1
normer = image_normalizations(ways='-1,1')
batch_size = config.batch_size
dataset_loaders = {}
for split in ['train', 'val']:
augmentations = Augmentations() if split == 'train' else None
batch_size = config.batch_size if split == 'train' else 1
drop_last = True if split == 'train' else False
xxx_dataset = dataset_generalize(dataset_config,
split=split,
augmentations=augmentations,
normalizations=normer)
xxx_loader = TD.DataLoader(dataset=xxx_dataset,
batch_size=batch_size,
shuffle=True,
drop_last=drop_last,
num_workers=2)
dataset_loaders[split] = xxx_loader
return dataset_loaders, config
def test_ignore_index():
config = edict()
config.root_path = '/media/sdb/CVDataset/ObjectSegmentation/archives/Cityscapes_archives'
config.cityscapes_split = random.choice(['test', 'val', 'train'])
config.print_path = True
config.resize_shape = (224, 224)
config.ignore_index = 255
config.with_edge = False
config = get_dataset_generalize_config(config, 'Cityscapes')
fg_ids = [i for i in range(19)]
augmentations = None
dataset = dataset_generalize(config,
split='train',
augmentations=augmentations)
loader = TD.DataLoader(dataset=dataset,
batch_size=2,
shuffle=True,
drop_last=False)
for i, data in enumerate(loader):
imgs, labels = data
# print(i,imgs.shape,labels.shape)
labels_ids = np.unique(labels)
print(labels_ids)
for id in labels_ids:
assert id == config.ignore_index or id in fg_ids, 'bad id=%d' % id
# plt.imshow(imgs[0,0])
# plt.show()
# plt.imshow(labels[0])
# plt.show()
if i >= 10:
break
def get_loader(config):
if config.dataset.norm_ways is None:
normalizations = None
else:
normalizations = image_normalizations(config.dataset.norm_ways)
if config.args.augmentation:
augmentations = Augmentations(config)
else:
augmentations = None
# must change batch size here!!!
batch_size = config.args.batch_size
train_dataset = dataset_generalize(
config.dataset, split='train',
augmentations=augmentations,
normalizations=normalizations)
train_loader = TD.DataLoader(
dataset=train_dataset,
batch_size=batch_size,
shuffle=True,
drop_last=True,
num_workers=4)
val_dataset = dataset_generalize(config.dataset,
split='val',
augmentations=None,
normalizations=normalizations)
val_loader = TD.DataLoader(
dataset=val_dataset,
batch_size=batch_size,
shuffle=True,
drop_last=False,
num_workers=2)
return train_loader, val_loader
def test_network():
class_number=19
ignore_index=255
net=simple_net(19)
loss_fn=torch.nn.CrossEntropyLoss(ignore_index=ignore_index)
optimizer = torch.optim.Adam([p for p in net.parameters() if p.requires_grad], lr = 0.0001)
config=edict()
config=get_dataset_generalize_config(config,'Cityscapes')
config.resize_shape=(224,224)
augmentations=None
dataset=dataset_generalize(config,split='train',augmentations=augmentations)
loader=TD.DataLoader(dataset=dataset,batch_size=2, shuffle=True,drop_last=False)
device=torch.device('cuda' if torch.cuda.is_available() else 'cpu')
net.to(device)
net.train()
for i, (images, labels) in enumerate(loader):
images = torch.autograd.Variable(images.to(device).float())
labels = torch.autograd.Variable(labels.to(device).long())
optimizer.zero_grad()
outputs = net.forward(images)
# print('images shape',images.shape)
# print('output shape',outputs.shape)
# print('labels shape',labels.shape)
assert outputs.size()[2:] == labels.size()[1:]
assert outputs.size()[1] == class_number
loss = loss_fn(input=outputs, target=labels)
# loss=torch.nn.functional.cross_entropy(input=outputs,target=labels,ignore_index=255)
loss.backward()
optimizer.step()
print('epoch=%s, loss=%.4f'%(i,loss.data))
import matplotlib.pyplot as plt
import os
import cv2
config = edict()
config.root_path = '/media/sdb/CVDataset/ObjectSegmentation/archives/Cityscapes_archives'
#config.cityscapes_split=random.choice(['test','val','train'])
config.resize_shape = (224, 224)
config.print_path = False
config.with_path = False
config.with_edge = False
#config=get_dataset_generalize_config(config,'Cityscapes')
config = get_dataset_generalize_config(config, 'VOC2012')
split = 'test'
dataset = dataset_generalize(config, split=split)
loader = TD.DataLoader(dataset=dataset,
batch_size=2,
shuffle=False,
drop_last=False)
save_root = '/media/sdc/yzbx/benchmark_output/cityscapes'
os.makedirs(save_root, exist_ok=True)
for i, data in enumerate(loader):
imgs = data['image']
paths = data['filename']
if split == 'test':
print(paths[0])
print(imgs[0].shape)
else:
else:
config.args.note = '_'.join([
args.note, args.backbone_name,
'bn%d' % args.batch_size, 'aug' + str(args.augmentation)[0]
])
if args.train_split == 'train_extra':
config.args.note += '_train_extra'
if args.augmentation:
augmentations = Augmentations(p=0.25)
else:
augmentations = None
train_dataset = dataset_generalize(config.dataset,
split=args.train_split,
augmentations=augmentations)
train_loader = TD.DataLoader(dataset=train_dataset,
batch_size=args.batch_size,
shuffle=True,
drop_last=True,
num_workers=8)
val_dataset = dataset_generalize(config.dataset,
split='val',
augmentations=augmentations)
val_loader = TD.DataLoader(dataset=val_dataset,
batch_size=args.batch_size,
shuffle=True,
drop_last=False,
num_workers=8)
if config.dataset.norm_ways is None:
normalizations = None
else:
normalizations = image_normalizations(config.dataset.norm_ways)
if config.args.augmentation:
augmentations = Augmentations(config)
else:
augmentations = None
# must change batch size here!!!
batch_size = args.batch_size
train_dataset = dataset_generalize(config.dataset,
split='train',
augmentations=augmentations,
normalizations=normalizations)
train_loader = TD.DataLoader(dataset=train_dataset,
batch_size=batch_size,
shuffle=True,
drop_last=True,
num_workers=4)
val_dataset = dataset_generalize(config.dataset,
split='val',
augmentations=None,
normalizations=normalizations)
val_loader = TD.DataLoader(dataset=val_dataset,
batch_size=batch_size,
shuffle=True,
drop_last=False,
def train(self, args=None, train_loader=None, val_loader=None):
if args is None:
args = self.config.training
self.model.compile(loss='categorical_crossentropy',
optimizer='adam',
metrics=['acc'])
if train_loader is None and val_loader is None:
train_dataset = dataset_generalize(config.dataset,
split='train',
bchw=False)
train_loader = TD.DataLoader(
dataset=train_dataset,
batch_size=self.config.dataset.batch_size,
shuffle=True,
drop_last=False)
val_dataset = dataset_generalize(config.dataset,
split='val',
bchw=False)
val_loader = TD.DataLoader(
dataset=val_dataset,
batch_size=self.config.dataset.batch_size,
shuffle=True,
drop_last=False)
running_metrics = runningScore(self.class_number)
time_str = time.strftime("%Y-%m-%d___%H-%M-%S", time.localtime())
log_dir = os.path.join(args.log_dir, self.name, self.dataset_name,
args.note, time_str)
checkpoint_path = os.path.join(
log_dir, "{}_{}_best_model.pkl".format(self.name,
self.dataset_name))
os.makedirs(log_dir, exist_ok=True)
writer = SummaryWriter(log_dir=log_dir)
best_iou = 0.6
loaders = [train_loader, val_loader]
loader_names = ['train', 'val']
for epoch in range(args.n_epoch):
for loader, loader_name in zip(loaders, loader_names):
if loader is None:
continue
if loader_name == 'val':
if epoch % 10 != 0:
continue
print(loader_name + '.' * 50)
n_step = len(loader)
losses = []
for i, (images, labels) in enumerate(loader):
x = images.data.numpy()
trues = labels.data.numpy()
y = to_categorical(trues, self.class_number)
if loader_name == 'train':
outputs = self.model.train_on_batch(x, y)
else:
outputs = self.model.test_on_batch(x, y)
predict_outputs = self.model.predict_on_batch(x)
predicts = np.argmax(predict_outputs, axis=-1)
losses.append(outputs[0])
if i % 5 == 0:
print(
"%s Epoch [%d/%d] Step [%d/%d]" %
(loader_name, epoch + 1, args.n_epoch, i, n_step))
for name, value in zip(self.model.metrics_names,
outputs):
print(name, value)
running_metrics.update(trues, predicts)
score, class_iou = running_metrics.get_scores()
for k, v in score.items():
print(k, v)
writer.add_scalar('%s/loss' % loader_name, np.mean(losses),
epoch)
writer.add_scalar('%s/acc' % loader_name,
score['Overall Acc: \t'], epoch)
writer.add_scalar('%s/iou' % loader_name,
score['Mean IoU : \t'], epoch)
running_metrics.reset()
if loader_name == 'val':
if score['Mean IoU : \t'] >= best_iou:
best_iou = score['Mean IoU : \t']
self.model.save(checkpoint_path)
if epoch % (1 + args.n_epoch // 10) == 0:
print('write image to tensorboard' + '.' * 50)
idx = np.random.choice(predicts.shape[0])
writer.add_image('val/images', x[idx, :, :, :], epoch)
writer.add_image('val/predicts',
torch.from_numpy(predicts[idx, :, :]),
epoch)
writer.add_image('val/trues',
torch.from_numpy(trues[idx, :, :]),
epoch)
diff_img = (
predicts[idx, :, :] == trues[idx, :, :]).astype(
np.uint8)
writer.add_image('val/difference',
torch.from_numpy(diff_img), epoch)
writer.close()
def do_train_or_val(net, args=None, train_loader=None, val_loader=None):
gpu_config = tf.ConfigProto()
# config.gpu_options.per_process_gpu_memory_fraction = 0.3
gpu_config.gpu_options.allow_growth = True
session = tf.Session(config=gpu_config)
KTF.set_session(session)
session.run(tf.global_variables_initializer())
if args is None:
args = net.config.training
metrics = net.get_metrics(net.class_number)
opt = net.get_optimizer(args)
net.model.compile(loss='categorical_crossentropy',
optimizer=opt,
metrics=metrics)
if train_loader is None and val_loader is None:
train_dataset = dataset_generalize(net.config.dataset,
split='train',
bchw=False)
train_loader = TD.DataLoader(dataset=train_dataset,
batch_size=net.config.dataset.batch_size,
shuffle=True,
drop_last=False)
val_dataset = dataset_generalize(net.config.dataset,
split='val',
bchw=False)
val_loader = TD.DataLoader(dataset=val_dataset,
batch_size=net.config.dataset.batch_size,
shuffle=True,
drop_last=False)
running_metrics = runningScore(net.class_number)
time_str = time.strftime("%Y-%m-%d___%H-%M-%S", time.localtime())
log_dir = os.path.join(args.log_dir, net.name, args.dataset_name,
args.note, time_str)
checkpoint_path = os.path.join(
log_dir, "{}_{}_best_model.pkl".format(net.name, args.dataset_name))
os.makedirs(log_dir, exist_ok=True)
writer = SummaryWriter(log_dir=log_dir)
config = net.config
config_str = json.dumps(config, indent=2, sort_keys=True).replace(
'\n', '\n\n').replace(' ', '\t')
writer.add_text(tag='config', text_string=config_str)
# write config to config.txt
config_path = os.path.join(log_dir, 'config.txt')
config_file = open(config_path, 'w')
json.dump(config, config_file, sort_keys=True)
config_file.close()
best_iou = 0.6
loaders = [train_loader, val_loader]
loader_names = ['train', 'val']
for epoch in range(args.n_epoch):
for loader, loader_name in zip(loaders, loader_names):
if loader is None:
continue
if loader_name == 'val':
if epoch % 5 != 0:
continue
print(loader_name + '.' * 50)
n_step = len(loader)
losses = []
for i, (images, labels) in enumerate(loader):
x = images.data.numpy()
trues = labels.data.numpy()
y = to_categorical(trues, net.class_number)
if loader_name == 'train':
outputs = net.model.train_on_batch(x, y)
else:
outputs = net.model.test_on_batch(x, y)
predict_outputs = net.model.predict_on_batch(x)
predicts = np.argmax(predict_outputs, axis=-1)
losses.append(outputs[0])
if epoch % 5 == 0:
print('keras metrics as follow:', '*' * 30)
print("%s Epoch [%d/%d] Step [%d/%d]" %
(loader_name, epoch + 1, args.n_epoch, i, n_step))
for name, value in zip(net.model.metrics_names, outputs):
print(name, value)
print('running metrics as follow:', '*' * 30)
running_metrics.update(trues, predicts)
score, class_iou = running_metrics.get_scores()
for k, v in score.items():
print(k, v)
if epoch % 5 == 0:
writer.add_scalar('%s/loss' % loader_name, np.mean(losses),
epoch)
writer.add_scalar('%s/acc' % loader_name,
score['Overall Acc: \t'], epoch)
writer.add_scalar('%s/iou' % loader_name,
score['Mean IoU : \t'], epoch)
running_metrics.reset()
if loader_name == 'val':
if score['Mean IoU : \t'] >= best_iou:
best_iou = score['Mean IoU : \t']
net.model.save(checkpoint_path)
# if epoch % (1+args.n_epoch//10) == 0:
# print('write image to tensorboard'+'.'*50)
# idx=np.random.choice(predicts.shape[0])
# writer.add_image('val/images',x[idx,:,:,:],epoch)
# writer.add_image('val/predicts', torch.from_numpy(predicts[idx,:,:]), epoch)
# writer.add_image('val/trues', torch.from_numpy(trues[idx,:,:]), epoch)
# diff_img=(predicts[idx,:,:]==trues[idx,:,:]).astype(np.uint8)
# writer.add_image('val/difference', torch.from_numpy(diff_img), epoch)
print('best iou is', best_iou)
writer.close()