def main():
# Load data
print("=> Load data...")
root = './STL10/'
data = STL10(opt.path_data, split='train', transform=transform_train, download=True)
loader_train = torch.utils.data.DataLoader(data, batch_size=opt.batch_size, shuffle=True, num_workers=2)
# Build model
print("=> Build model...")
net = DnCNN(channels=1, num_of_layers=opt.num_of_layers)
if opt.resume and os.path.exists(os.path.join(opt.outf, 'net.pth')):
print("Resuming training.")
net.load_state_dict(torch.load(os.path.join(opt.outf, 'net.pth')))
else:
print("Training from scratch.")
net.apply(weights_init_kaiming)
# Loss
criterion = nn.MSELoss(size_average=False)
# Optimizer
optimizer = optim.Adam(net.parameters(), lr=opt.lr)
# Training
step = 0
print("=> Begin training...")
for epoch in range(opt.epochs):
if epoch < opt.milestone:
current_lr = opt.lr
else:
current_lr = opt.lr / 5.
# Set learning rate
for param_group in optimizer.param_groups:
param_group["lr"] = current_lr
print('Learning rate %f' % current_lr)
# Train
for i, (img_train, imgn_train) in enumerate(loader_train, 0):
# training step
net.train()
net.zero_grad()
optimizer.zero_grad()
out_train = net(imgn_train.float())
loss = criterion(out_train, img_train) / (imgn_train.size()[0]*2)
loss.backward()
optimizer.step()
# Results
net.eval()
out_train = torch.clamp(out_train, 0., 1.)
psnr_train = batch_PSNR(out_train, img_train, 1.)
print("[epoch %d][%d/%d] loss: %.4f PSNR_train: %.4f" %
(epoch+1, i+1, len(loader_train), loss.item(), psnr_train))
step += 1
# Save model
torch.save(net.state_dict(), os.path.join(opt.outf, 'net.pth'))
def main():
# creat_readme()
# choose cpu or gpu
if torch.cuda.is_available():
args.device = torch.device('cuda')
else:
args.device = torch.device('cpu')
print('Loading Dataset--')
dataset_train = RootDataset(root_file=args.trainfile, sigma=args.sigma)
loader_train = DataLoader(dataset=dataset_train, batch_size=args.batchSize)
dataset_val = RootDataset(root_file=args.valfile, sigma=args.sigma)
val_train = DataLoader(dataset=dataset_val, batch_size=args.batchSize)
# Build model
model = DnCNN(channels=1,
num_of_layers=args.num_of_layers,
ker_size=args.kernelSize,
o_k_size=args.outKerSize).to(device=args.device)
if (args.model == None):
model.apply(init_weights)
print("Creating new model")
else:
print("Loading model from file" + args.model)
model.load_state_dict(torch.load(args.model))
model.eval()
# Loss function
criterion = PatchLoss()
criterion.to(device=args.device)
#Optimizer
MyOptim = optim.Adam(model.parameters(), lr=args.lr)
MyScheduler = optim.lr_scheduler.ReduceLROnPlateau(optimizer=MyOptim,
factor=0.1,
patience=10,
verbose=True)
# training and validation
step = 0
training_losses = np.zeros(args.epochs)
validation_losses = np.zeros(args.epochs)
for epoch in range(args.epochs):
print("Epoch #" + str(epoch))
# training
train_loss = 0
for i, data in enumerate(loader_train, 0):
model.train()
model.zero_grad()
MyOptim.zero_grad()
truth, noise = data
noise = noise.unsqueeze(1)
output = model(noise.float().to(args.device), args.outKerSize)
batch_loss = criterion(
output.squeeze(1).to(args.device), truth.to(args.device),
args.patchSize).to(args.device)
batch_loss.backward()
MyOptim.step()
model.eval()
train_loss += batch_loss.item()
training_losses[epoch] = train_loss
print("Training Loss: " + str(train_loss))
val_loss = 0
for i, data in enumerate(val_train, 0):
val_truth, val_noise = data
val_output = model(
val_noise.unsqueeze(1).float().to(args.device),
args.outKerSize)
output_loss = criterion(
val_output.squeeze(1).to(args.device),
val_truth.to(args.device), args.patchSize).to(args.device)
val_loss += output_loss.item()
MyScheduler.step(torch.tensor([val_loss]))
validation_losses[epoch] = val_loss
print("Validation Loss: " + str(val_loss))
# save the model
model.eval()
torch.save(model.state_dict(), os.path.join(args.outf, 'net.pth'))
training = plt.plot(training_losses, label='Training')
validation = plt.plot(validation_losses, label='Validation')
plt.legend()
plt.savefig(args.outf + "/lossplt.png")
branch = get_all_histograms("./test.root")
model.to('cpu')
for image in range(10):
data = get_bin_weights(branch, image).copy()
np.savetxt(args.outf + '/truth#' + str(image) + '.txt', data)
means = np.mean(data)
stdevs = np.std(data)
noisy = add_noise(data, args.sigma).copy()
np.savetxt(args.outf + '/noisy#' + str(image) + '.txt', noisy)
data_norm = (data - means) / stdevs
np.savetxt(args.outf + '/truth_norm#' + str(image) + '.txt', data_norm)
noisy_norm = (noisy - means) / stdevs
np.savetxt(args.outf + '/noisy_norm#' + str(image) + '.txt',
noisy_norm)
data_norm = torch.from_numpy(data_norm)
noisy_norm = torch.from_numpy(noisy_norm)
noisy_norm = noisy_norm.unsqueeze(0)
noisy_norm = noisy_norm.unsqueeze(1)
output_norm = model(
noisy_norm.float(),
args.outKerSize).squeeze(0).squeeze(0).detach().numpy()
np.savetxt(args.outf + '/output_norm#' + str(image) + '.txt',
output_norm)
output = (output_norm * stdevs) + means
np.savetxt(args.outf + '/output#' + str(image) + '.txt', output)
truth = data.numpy()
noisy = noisy.numpy()
diff = output - truth
noisy_diff = noisy - truth
np.savetxt(args.outf + '/diff#' + str(image) + '.txt', diff)
model.to('cuda')