def validate(val_loader, model, criterion, epoch, key, evaluator):
'''
Run evaluation
'''
# Switch to evaluate mode
model.eval()
for i, (img, gt) in enumerate(val_loader):
# Process the network inputs and outputs
img = utils.normalize(img, torch.Tensor([0.295, 0.204, 0.197]), torch.Tensor([0.221, 0.188, 0.182]))
gt_temp = gt * 255
label = utils.generateLabel4CE(gt_temp, key)
oneHotGT = utils.generateOneHot(gt_temp, key)
img, label = Variable(img), Variable(label)
if use_gpu:
img = img.cuda()
label = label.cuda()
# Compute output
seg = model(img)
loss = model.dice_loss(seg, label)
print('[%d/%d][%d/%d] Loss: %.4f'
% (epoch, args.epochs-1, i, len(val_loader)-1, loss.mean().data))
utils.displaySamples(img, seg, gt, use_gpu, key, args.saveTest, epoch,
i, args.save_dir)
evaluator.addBatch(seg, oneHotGT)
def train(train_loader, model, criterion, optimizer, scheduler, epoch, key):
'''
Run one training epoch
'''
# Switch to train mode
model.train()
for i, (img, seg_gt, class_gt) in enumerate(train_loader):
# For TenCrop Data Augmentation
img = img.view(-1, 3, args.resizedImageSize, args.resizedImageSize)
img = utils.normalize(img, torch.Tensor([0.295, 0.204, 0.197]),
torch.Tensor([0.221, 0.188, 0.182]))
seg_gt = seg_gt.view(-1, 3, args.resizedImageSize,
args.resizedImageSize)
# Process the network inputs and outputs
gt_temp = seg_gt * 255
seg_label = utils.generateLabel4CE(gt_temp, key)
class_label = class_gt
for _ in range(9):
class_label = torch.cat((class_label, class_gt), 0)
img, seg_label, class_label = Variable(img), Variable(
seg_label), Variable(class_label).float()
if use_gpu:
img = img.cuda()
seg_label = seg_label.cuda()
class_label = class_label.cuda()
# Compute output
classified, segmented = model(img)
seg_loss = model.dice_loss(segmented, seg_label)
class_loss = criterion(classified, class_label)
total_loss = seg_loss + class_loss
# Compute gradient and do SGD step
optimizer.zero_grad()
total_loss.backward()
optimizer.step()
scheduler.step(total_loss.mean().data)
print(
'[{:d}/{:d}][{:d}/{:d}] Total Loss: {:.4f}, Segmentation Loss: {:.4f}, Classification Loss: {:.4f}'
.format(epoch, args.epochs - 1, i,
len(train_loader) - 1,
total_loss.mean().data,
seg_loss.mean().data,
class_loss.mean().data))
utils.displaySamples(img, segmented, seg_gt, use_gpu, key, False,
epoch, i, args.save_dir)
def train(train_loader, model, optimizer, epoch, key):
'''
Run one training epoch
'''
model.train()
for i, (data, target) in enumerate(train_loader):
# Generate the target vector from the groundtruth image
# Multiplication by 255 to convert from float to unit8
target_temp = target * 255
label = utils.generateGTmask(target_temp, key)
print(torch.max(label))
if use_gpu:
data = data.cuda()
label = label.cuda()
#gt.view(-1)
#print(target)
data, label = Variable(data), Variable(label, requires_grad=False)
label = label.float()
optimizer.zero_grad()
if args.with_reconstruction:
output, probs = model(data, label)
loss = F.mse_loss(output, label)
# margin_loss = loss_fn(probs, target)
# loss = reconstruction_alpha * reconstruction_loss + margin_loss
# if args.verbose:
print(output[0, 3000:3020])
print(label[0, 3000:3020])
loss.backward()
optimizer.step()
print('[%d/%d][%d/%d] Loss: %.4f' %
(epoch, args.epochs, i, len(train_loader), loss.mean().data[0]))
if i % args.print_freq == 0:
# vutils.save_image(real_cpu,
# '%s/real_samples.png' % args.save_dir,
# normalize=True)
# #fake = netG(fixed_noise)
# vutils.save_image(fake.data,
# '%s/fake_samples_epoch_%03d.png' % (args.save_dir, epoch),
# normalize=True)
utils.displaySamples(data, output, target, use_gpu, key)
def train(train_loader, model, criterion, optimizer, scheduler, epoch, key):
'''
Run one training epoch
'''
# Switch to train mode
model.train()
epoch_loss = 0
for i, (img, gt) in enumerate(train_loader):
# For TenCrop Data Augmentation
img = img.view(-1,3,args.resizedImageSize,args.resizedImageSize)
img = utils.normalize(img, torch.Tensor([0.295, 0.204, 0.197]), torch.Tensor([0.221, 0.188, 0.182]))
gt = gt.view(-1,3,args.resizedImageSize,args.resizedImageSize)
# Process the network inputs and outputs
gt_temp = gt * 255
label = utils.generateLabel4CE(gt_temp, key)
oneHotGT = utils.generateOneHot(gt_temp, key)
img, label = Variable(img), Variable(label)
if use_gpu:
img = img.cuda()
label = label.cuda()
# Compute output
seg = model(img)
loss = model.dice_loss(seg, label)
# Compute gradient and do SGD step
optimizer.zero_grad()
loss.backward()
optimizer.step()
scheduler.step(loss.mean().item())
epoch_loss += loss.mean().item()
print('[%d/%d][%d/%d] Loss: %.4f'
% (epoch, args.epochs-1, i, len(train_loader)-1, loss.mean().item()))
utils.displaySamples(img, seg, gt, use_gpu, key, False, epoch,
i, args.save_dir)
writer.add_scalar('Train Epoch Loss', epoch_loss / (i+1), epoch)
def validate(val_loader, model, criterion, epoch, key, evaluator):
'''
Run evaluation
'''
# Switch to evaluate mode
model.eval()
for i, (img, seg_gt, class_gt) in enumerate(val_loader):
# Process the network inputs and outputs
img = utils.normalize(img, torch.Tensor([0.295, 0.204, 0.197]),
torch.Tensor([0.221, 0.188, 0.182]))
gt_temp = seg_gt * 255
seg_label = utils.generateLabel4CE(gt_temp, key)
oneHotGT = utils.generateOneHot(gt_temp, key)
img, seg_label, class_label = Variable(img), Variable(
seg_label), Variable(class_gt).float()
if use_gpu:
img = img.cuda()
seg_label = seg_label.cuda()
class_label = class_label.cuda()
# Compute output
classified, segmented = model(img)
seg_loss = model.dice_loss(segmented, seg_label)
class_loss = criterion(classified, class_label)
total_loss = seg_loss + class_loss
print(
'[{:d}/{:d}][{:d}/{:d}] Total Loss: {:.4f}, Segmentation Loss: {:.4f}, Classification Loss: {:.4f}'
.format(epoch, args.epochs - 1, i,
len(val_loader) - 1,
total_loss.mean().data,
seg_loss.mean().data,
class_loss.mean().data))
utils.displaySamples(img, segmented, seg_gt, use_gpu, key,
args.saveTest, epoch, i, args.save_dir)
evaluator.addBatch(segmented, oneHotGT)
def train(train_loader, netG, netG2, netD, criterion, criterion_L1, optimizerG,
optimizerG2, optimizerD, epoch, input, noise, fixed_noise, label,
nz):
'''
Run one training epoch
'''
for i, (img, gt) in enumerate(train_loader):
# Generate smoothed labels
if args.labelSmoothing:
real_label = random.uniform(0.7, 1.2)
fake_label = random.uniform(0.0, 0.3)
else:
real_label = 1
fake_label = 0
############################
# (1) Update D network: maximize log(D(x)) + log(1 - D(G(z)))
###########################
# train with real
gtForViz = gt
if args.verbose:
print('GT shape')
print(gt.shape)
if use_gpu:
img = img.cuda()
gt = gt.cuda()
netD.zero_grad()
real_cpu = img
batch_size = real_cpu.size(0)
if use_gpu:
real_cpu = real_cpu.cuda()
input.resize_as_(real_cpu).copy_(real_cpu)
#input.normal_(-1, 1)
label.resize_(batch_size).fill_(real_label)
inputv = Variable(input)
labelv = Variable(label)
output = netD(inputv)
if args.verbose:
print('Output size - real: ')
print(output.data.shape)
errD_real = criterion(output, labelv)
errD_real.backward()
D_x = output.data.mean()
# train with fake
if args.inputType == 'segM':
noise = gt
if args.verbose:
print('GT noise shape')
print(gt.shape)
if args.verbose:
print('Noise Reshaped: ')
print(noise.shape)
else:
noise = torch.randn(batch_size, 3, args.imageSize, args.imageSize)
netG.zero_grad()
if use_gpu:
noise = noise.cuda()
#noiseForViz = noise.resize_(batch_size, nz, 1, 1)
#noise.normal_(-1, 1)
noisev = Variable(noise)
fake = netG(noisev)
if args.verbose:
print('Fake img size: ')
print(fake.data.shape)
labelv = Variable(label.fill_(fake_label))
output = netD(fake.detach())
if args.verbose:
print('Output size - fake: ')
print(output.data.shape)
if args.useL1:
errL1 = criterion_L1(input.normal_(-1, 1), fake.detach())
errD_fake = criterion(output, labelv) + args.Lambda * errL1
else:
errD_fake = criterion(output, labelv)
errD_fake.backward()
D_G_z1 = output.data.mean()
if args.useL1:
errD = errD_real + errD_fake + args.Lambda * errL1
else:
errD = errD_real + errD_fake
optimizerD.step()
############################
# (2) Update G network: maximize log(D(G(z)))
###########################
# Run the 2nd G network to get back the segmentation mask
netG2.zero_grad()
genSeg = netG2(fake)
errL1G2 = criterion_L1(gt.normal_(0, 1), genSeg.detach())
netG.zero_grad()
labelv = Variable(
label.fill_(real_label)) # fake labels are real for generator cost
output = netD(fake)
if args.useL1:
errG = criterion(output, labelv) + args.Lambda * (errL1 + errL1G2)
else:
errG = criterion(output, labelv)
errG.backward()
D_G_z2 = output.data.mean()
optimizerG.step()
optimizerG2.step()
if args.useL1:
print(
'[%d/%d][%d/%d] Loss_D: %.4f Loss_G: %.4f Loss_L1: %.4f Loss_L1G2: %.4f D(x): %.4f D(G(z)): %.4f / %.4f'
% (epoch, args.epochs, i, len(train_loader), errD.data[0],
errG.data[0], errL1.data[0], errL1G2.data[0], D_x, D_G_z1,
D_G_z2))
else:
print(
'[%d/%d][%d/%d] Loss_D: %.4f Loss_G: %.4f D(x): %.4f D(G(z)): %.4f / %.4f'
% (epoch, args.epochs, i, len(train_loader), errD.data[0],
errG.data[0], D_x, D_G_z1, D_G_z2))
if i % args.print_freq == 0:
vutils.save_image(real_cpu,
'%s/real_samples.png' % args.save_dir,
normalize=True)
#fake = netG(fixed_noise)
vutils.save_image(fake.data,
'%s/fake_samples_epoch_%03d.png' %
(args.save_dir, epoch),
normalize=True)
utils.displaySamples(real_cpu, fake, genSeg, gtForViz, use_gpu)
def train(train_loader, netG, netD, criterion, optimizerG, optimizerD, epoch,
input, noise, fixed_noise, label, real_label, fake_label, nz):
'''
Run one training epoch
'''
for i, (img, gt) in enumerate(train_loader):
############################
# (1) Update D network: maximize log(D(x)) + log(1 - D(G(z)))
###########################
# train with real
gtForViz = gt
gt = gt.view(-1, 1).squeeze(1)
if args.verbose:
print('GT shape')
print(gt.shape)
if use_gpu:
img = img.cuda()
gt = gt.cuda()
netD.zero_grad()
real_cpu = img
batch_size = real_cpu.size(0)
if use_gpu:
real_cpu = real_cpu.cuda()
input.resize_as_(real_cpu).copy_(real_cpu)
label.resize_(batch_size).fill_(real_label)
inputv = Variable(input)
labelv = Variable(label)
output = netD(inputv)
if args.verbose:
print('Output size - real: ')
print(output.data.shape)
errD_real = criterion(output, labelv)
errD_real.backward()
D_x = output.data.mean()
# train with fake'
noise = gt
if args.verbose:
print('GT noise shape')
print(gt.shape)
noiseForViz = noise.resize_(batch_size, nz, 1, 1)
noise.resize_(batch_size, nz, 1, 1).normal_(0, 1)
if args.verbose:
print('Noise Reshaped: ')
print(noise.shape)
noisev = Variable(noise)
fake = netG(noisev)
print(fake)
if args.verbose:
print('Fake img size: ')
print(fake.data.shape)
labelv = Variable(label.fill_(fake_label))
output = netD(fake.detach())
if args.verbose:
print('Output size - fake: ')
print(output.data.shape)
errD_fake = criterion(output, labelv)
errD_fake.backward()
D_G_z1 = output.data.mean()
errD = errD_real + errD_fake
optimizerD.step()
############################
# (2) Update G network: maximize log(D(G(z)))
###########################
netG.zero_grad()
labelv = Variable(
label.fill_(real_label)) # fake labels are real for generator cost
output = netD(fake)
errG = criterion(output, labelv)
errG.backward()
D_G_z2 = output.data.mean()
optimizerG.step()
print(
'[%d/%d][%d/%d] Loss_D: %.4f Loss_G: %.4f D(x): %.4f D(G(z)): %.4f / %.4f'
% (epoch, args.epochs, i, len(train_loader), errD.data[0],
errG.data[0], D_x, D_G_z1, D_G_z2))
if i % args.print_freq == 0:
vutils.save_image(real_cpu,
'%s/real_samples.png' % args.save_dir,
normalize=True)
#fake = netG(fixed_noise)
vutils.save_image(fake.data,
'%s/fake_samples_epoch_%03d.png' %
(args.save_dir, epoch),
normalize=True)
utils.displaySamples(real_cpu, fake, noiseForViz, gtForViz,
use_gpu)