def validate(loader, num_classes, device, net, scheduler, criterion):
num_samples = 0
running_loss = 0
metrics = Metrics(range(num_classes))
net.eval()
for images, masks in tqdm.tqdm(loader):
images = images.to(device, dtype=torch.float)
masks = masks.to(device)
num_samples += int(images.size(0))
outputs = net(images)
loss = criterion(outputs, masks)
running_loss += loss.item()
for mask, output in zip(masks, outputs):
metrics.add(mask, output)
assert num_samples > 0, "dataset contains validation images and labels"
scheduler.step(metrics.get_miou()) # update learning rate
return {
"loss": running_loss / num_samples,
"miou": metrics.get_miou(),
"fg_iou": metrics.get_fg_iou(),
"mcc": metrics.get_mcc(),
}
def validate(loader, num_classes, device, net, scheduler, criterion):
num_samples = 0
running_loss = 0
metrics = Metrics(range(num_classes))
net.eval()
for images, masks in tqdm.tqdm(loader):
images = torch.squeeze(images.to(device, dtype=torch.float))
masks = torch.squeeze(masks.to(device).long())
assert images.size()[2:] == masks.size(
)[1:], "resolutions for images and masks are in sync"
num_samples += int(images.size(0))
outputs0, outputs1, outputs2, outputs3, outputs0_2, outputs1_2, outputs2_2, outputs3_2 = net(
images)
loss0 = criterion(outputs0, masks)
loss1 = criterion(outputs1, masks)
loss2 = criterion(outputs2, masks)
loss3 = criterion(outputs3, masks)
loss0_2 = criterion(outputs0_2, masks)
loss1_2 = criterion(outputs1_2, masks)
loss2_2 = criterion(outputs2_2, masks)
loss3_2 = criterion(outputs3_2, masks)
loss = loss0 + loss1 + loss2 + loss3 + loss0_2 + loss1_2 + loss2_2 + loss3_2
running_loss += loss.item()
outputs = (outputs0_2 + outputs1_2 + outputs2_2 + outputs3_2) / 4
for mask, output in zip(masks, outputs):
metrics.add(mask, output)
assert num_samples > 0, "dataset contains validation images and labels"
scheduler.step(metrics.get_miou()) # update learning rate
return {
"loss": running_loss / num_samples,
"miou": metrics.get_miou(),
"fg_iou": metrics.get_fg_iou(),
"mcc": metrics.get_mcc(),
}
def train(loader, num_classes, device, net, optimizer, criterion):
num_samples = 0
running_loss = 0
metrics = Metrics(range(num_classes))
net.train()
for images, masks in tqdm.tqdm(loader):
images = torch.squeeze(images.to(device, dtype=torch.float))
masks = torch.squeeze(masks.to(device))
# print("images'size:{},masks'size:{}".format(images.size(),masks.size()))
assert images.size()[2:] == masks.size(
)[1:], "resolutions for images and masks are in sync"
num_samples += int(images.size(0))
optimizer.zero_grad()
outputs0, outputs1, outputs2, outputs3, outputs0_2, outputs1_2, outputs2_2, outputs3_2 = net(
images)
loss0 = criterion(outputs0, masks)
loss1 = criterion(outputs1, masks)
loss2 = criterion(outputs2, masks)
loss3 = criterion(outputs3, masks)
loss0_2 = criterion(outputs0_2, masks)
loss1_2 = criterion(outputs1_2, masks)
loss2_2 = criterion(outputs2_2, masks)
loss3_2 = criterion(outputs3_2, masks)
loss = loss0 + loss1 + loss2 + loss3 + loss0_2 + loss1_2 + loss2_2 + loss3_2
loss.backward()
batch_loss = loss.item()
optimizer.step()
running_loss += batch_loss
outputs = (outputs0_2 + outputs1_2 + outputs2_2 + outputs3_2) / 4
for mask, output in zip(masks, outputs):
prediction = output.detach()
metrics.add(mask, prediction)
assert num_samples > 0, "dataset contains training images and labels"
return {
"loss": running_loss / num_samples,
"miou": metrics.get_miou(),
"fg_iou": metrics.get_fg_iou(),
"mcc": metrics.get_mcc(),
}
def train(loader, num_classes, device, net, optimizer, criterion):
global global_step
num_samples = 0
running_loss = 0
metrics = Metrics(range(num_classes))
net.train()
for images, masks, dwm in tqdm.tqdm(loader):
images = images.to(device, dtype=torch.float)
masks = masks.to(device)
dwm = torch.squeeze(dwm.to(device))
# print("images'size:{},masks'size:{}".format(images.size(),masks.size()))
num_samples += int(images.size(0))
optimizer.zero_grad()
outputs, dsv4, dsv3, dsv2 = net(images)
l2 = criterion(dsv2, masks, dwm)
l3 = criterion(dsv3, masks, dwm)
l4 = criterion(dsv4, masks, dwm)
loss_fuse = criterion(outputs, masks, dwm)
loss = (l2 + l3 + l4 + loss_fuse) / 4
loss.backward()
batch_loss = loss.item()
optimizer.step()
global_step = global_step + 1
running_loss += batch_loss
for mask, output in zip(masks, outputs):
prediction = output.detach()
metrics.add(mask, prediction)
assert num_samples > 0, "dataset contains training images and labels"
return {
"loss": running_loss / num_samples,
"miou": metrics.get_miou(),
"fg_iou": metrics.get_fg_iou(),
"mcc": metrics.get_mcc(),
}
def train(loader, num_classes, device, net, optimizer, criterion):
num_samples = 0
running_loss = 0
metrics = Metrics(range(num_classes))
net.train()
for images, masks in tqdm.tqdm(loader):
images = images.to(device)
masks = masks.to(device)
assert images.size()[2:] == masks.size(
)[1:], "resolutions for images and masks are in sync"
num_samples += int(images.size(0))
optimizer.zero_grad()
outputs = net(images)
assert outputs.size()[2:] == masks.size(
)[1:], "resolutions for predictions and masks are in sync"
assert outputs.size(
)[1] == num_classes, "classes for predictions and dataset are in sync"
loss = criterion(outputs, masks)
loss.backward()
optimizer.step()
running_loss += loss.item()
for mask, output in zip(masks, outputs):
prediction = output.detach()
metrics.add(mask, prediction)
assert num_samples > 0, "dataset contains training images and labels"
return {
"loss": running_loss / num_samples,
"miou": metrics.get_miou(),
"fg_iou": metrics.get_fg_iou(),
"mcc": metrics.get_mcc(),
}
def validate(loader, num_classes, device, net, criterion):
num_samples = 0
running_loss = 0
metrics = Metrics(range(num_classes))
net.eval()
for images, masks, in tqdm.tqdm(loader):
images = images.to(device)
masks = masks.to(device)
assert images.size()[2:] == masks.size(
)[1:], "resolutions for images and masks are in sync"
num_samples += int(images.size(0))
outputs = net(images)
assert outputs.size()[2:] == masks.size(
)[1:], "resolutions for predictions and masks are in sync"
assert outputs.size(
)[1] == num_classes, "classes for predictions and dataset are in sync"
loss = criterion(outputs, masks)
running_loss += loss.item()
for mask, output in zip(masks, outputs):
metrics.add(mask, output)
assert num_samples > 0, "dataset contains validation images and labels"
return {
"loss": running_loss / num_samples,
"miou": metrics.get_miou(),
"fg_iou": metrics.get_fg_iou(),
"mcc": metrics.get_mcc(),
}