def vis_dataset(prepared_train_labels, train_images_folder):
stride = 8
sigma = 7
path_thickness = 1
dataset = Body21TrainDataset(prepared_train_labels,
train_images_folder,
stride,
sigma,
path_thickness,
transform=transforms.Compose([
ConvertKeypoints2(),
Scale(),
Rotate(pad=(128, 128, 128)),
CropPad(pad=(128, 128, 128)),
Flip2()
]))
train_loader = DataLoader(dataset)
for batch_data in train_loader:
images = batch_data['image']
keypoint_masks = batch_data['keypoint_mask']
paf_masks = batch_data['paf_mask']
keypoint_maps = batch_data['keypoint_maps']
paf_maps = batch_data['paf_maps']
#num_kepoints = batch_data['label']['num_keypoints'][0].item()
# if num_kepoints < 21:
# continue
image_bgr = np.uint8(images[0].numpy().transpose(1, 2, 0) * 256 + 128)
cv2.imshow('image', image_bgr)
cv2.moveWindow('image', 384, 0)
for i in range(len(keypoint_maps[0])):
heat_map = cv2.resize(keypoint_maps[0][i].numpy(),
(images[0].shape[2], images[0].shape[1]))
heat_map = np.expand_dims(np.uint8(heat_map * 255), -1)
debug_map = image_bgr // 2 + heat_map // 2
win_name = 'keypoint: {}'.format(kp_names[i])
cv2.imshow(win_name, debug_map)
cv2.moveWindow(win_name, 0, 0)
cv2.waitKey(0)
cv2.destroyWindow(win_name)
for i in range(len(BODY_PARTS_PAF_IDS)):
pair = BODY_PARTS_PAF_IDS[i]
paf_map_x = np.abs(paf_maps[0][pair[0]].numpy())
paf_map_y = np.abs(paf_maps[0][pair[1]].numpy())
paf_map = np.fmin(np.fmax(paf_map_x, paf_map_y) * 100, 1.0)
paf_map = cv2.resize(paf_map,
(images[0].shape[2], images[0].shape[1]))
paf_map = np.expand_dims(np.uint8(abs(paf_map) * 255), -1)
debug_map = image_bgr // 2 + paf_map // 2
win_name = 'part: {}'.format(pf_names[i])
cv2.imshow(win_name, debug_map)
cv2.moveWindow(win_name, 0, 0)
cv2.waitKey(0)
cv2.destroyWindow(win_name)
def train(prepared_train_labels, train_images_folder, num_refinement_stages,
base_lr, batch_size, batches_per_iter, num_workers, checkpoint_path,
weights_only, from_mobilenet, checkpoints_folder, log_after,
val_labels, val_images_folder, val_output_name, checkpoint_after,
val_after):
net = PoseEstimationWithMobileNet(num_refinement_stages)
stride = 8
sigma = 7
path_thickness = 1
dataset = CocoTrainDataset(prepared_train_labels,
train_images_folder,
stride,
sigma,
path_thickness,
transform=transforms.Compose([
ConvertKeypoints(),
Scale(),
Rotate(pad=(128, 128, 128)),
CropPad(pad=(128, 128, 128)),
Flip()
]))
train_loader = DataLoader(dataset,
batch_size=batch_size,
shuffle=True,
num_workers=num_workers)
optimizer = optim.Adam([
{
'params': get_parameters_conv(net.model, 'weight')
},
{
'params': get_parameters_conv_depthwise(net.model, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_bn(net.model, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_bn(net.model, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
{
'params': get_parameters_conv(net.cpm, 'weight'),
'lr': base_lr
},
{
'params': get_parameters_conv(net.cpm, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
{
'params': get_parameters_conv_depthwise(net.cpm, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_conv(net.initial_stage, 'weight'),
'lr': base_lr
},
{
'params': get_parameters_conv(net.initial_stage, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
{
'params': get_parameters_conv(net.refinement_stages, 'weight'),
'lr': base_lr * 4
},
{
'params': get_parameters_conv(net.refinement_stages, 'bias'),
'lr': base_lr * 8,
'weight_decay': 0
},
{
'params': get_parameters_bn(net.refinement_stages, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_bn(net.refinement_stages, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
],
lr=base_lr,
weight_decay=5e-4)
num_iter = 0
current_epoch = 0
drop_after_epoch = [100, 200, 260]
scheduler = optim.lr_scheduler.MultiStepLR(optimizer,
milestones=drop_after_epoch,
gamma=0.333)
if checkpoint_path:
checkpoint = torch.load(checkpoint_path)
if from_mobilenet:
load_from_mobilenet(net, checkpoint)
else:
load_state(net, checkpoint)
if not weights_only:
optimizer.load_state_dict(checkpoint['optimizer'])
scheduler.load_state_dict(checkpoint['scheduler'])
num_iter = checkpoint['iter']
current_epoch = checkpoint['current_epoch']
net = DataParallel(net).cuda()
net.train()
for epochId in range(current_epoch, 280):
scheduler.step()
total_losses = [0, 0] * (num_refinement_stages + 1
) # heatmaps loss, paf loss per stage
batch_per_iter_idx = 0
for batch_data in train_loader:
if batch_per_iter_idx == 0:
optimizer.zero_grad()
images = batch_data['image'].cuda()
keypoint_masks = batch_data['keypoint_mask'].cuda()
paf_masks = batch_data['paf_mask'].cuda()
keypoint_maps = batch_data['keypoint_maps'].cuda()
paf_maps = batch_data['paf_maps'].cuda()
stages_output = net(images)
losses = []
for loss_idx in range(len(total_losses) // 2):
losses.append(
l2_loss(stages_output[loss_idx * 2], keypoint_maps,
keypoint_masks, images.shape[0]))
losses.append(
l2_loss(stages_output[loss_idx * 2 + 1], paf_maps,
paf_masks, images.shape[0]))
total_losses[loss_idx *
2] += losses[-2].item() / batches_per_iter
total_losses[loss_idx * 2 +
1] += losses[-1].item() / batches_per_iter
loss = losses[0]
for loss_idx in range(1, len(losses)):
loss += losses[loss_idx]
loss /= batches_per_iter
loss.backward()
batch_per_iter_idx += 1
if batch_per_iter_idx == batches_per_iter:
optimizer.step()
batch_per_iter_idx = 0
num_iter += 1
else:
continue
if num_iter % log_after == 0:
print('Iter: {}'.format(num_iter))
for loss_idx in range(len(total_losses) // 2):
print('\n'.join([
'stage{}_pafs_loss: {}',
'stage{}_heatmaps_loss: {}'
]).format(loss_idx + 1,
total_losses[loss_idx * 2 + 1] / log_after,
loss_idx + 1,
total_losses[loss_idx * 2] / log_after))
for loss_idx in range(len(total_losses)):
total_losses[loss_idx] = 0
if num_iter % checkpoint_after == 0:
snapshot_name = '{}/checkpoint_iter_{}.pth'.format(
checkpoints_folder, num_iter)
torch.save(
{
'state_dict': net.module.state_dict(),
'optimizer': optimizer.state_dict(),
'scheduler': scheduler.state_dict(),
'iter': num_iter,
'current_epoch': epochId
}, snapshot_name)
if num_iter % val_after == 0:
print('Validation...')
evaluate(val_labels, val_output_name, val_images_folder, net)
net.train()
def train(prepared_train_labels, train_images_folder, num_refinement_stages, base_lr, batch_size, batches_per_iter,
num_workers, checkpoint_path, weights_only, from_mobilenet, checkpoints_folder, log_after,
val_labels, val_images_folder, val_output_name, checkpoint_after, val_after):
net = PoseEstimationWithMobileNet(num_refinement_stages)#---------------------------------for training, define a PoseEstimation model
stride = 8
sigma = 7
path_thickness = 1
dataset = CocoTrainDataset(prepared_train_labels, train_images_folder,
stride, sigma, path_thickness,
transform=transforms.Compose([
ConvertKeypoints(),
Scale(),
Rotate(pad=(128, 128, 128)),
CropPad(pad=(128, 128, 128)),
Flip()]))
train_loader = DataLoader(dataset, batch_size=batch_size, shuffle=True, num_workers=num_workers)
#If you need to move a model to GPU via.cuda(), please do so before
# constructing optimizers for it.Parameters of a model after.cuda() will be different objects with those before the call.
optimizer = optim.Adam([
{'params': get_parameters_conv(net.model, 'weight')},
{'params': get_parameters_conv_depthwise(net.model, 'weight'), 'weight_decay': 0},
{'params': get_parameters_bn(net.model, 'weight'), 'weight_decay': 0},
{'params': get_parameters_bn(net.model, 'bias'), 'lr': base_lr * 2, 'weight_decay': 0},
{'params': get_parameters_conv(net.cpm, 'weight'), 'lr': base_lr},
{'params': get_parameters_conv(net.cpm, 'bias'), 'lr': base_lr * 2, 'weight_decay': 0},
{'params': get_parameters_conv_depthwise(net.cpm, 'weight'), 'weight_decay': 0},
{'params': get_parameters_conv(net.initial_stage, 'weight'), 'lr': base_lr},
{'params': get_parameters_conv(net.initial_stage, 'bias'), 'lr': base_lr * 2, 'weight_decay': 0},
{'params': get_parameters_conv(net.refinement_stages, 'weight'), 'lr': base_lr * 4},
{'params': get_parameters_conv(net.refinement_stages, 'bias'), 'lr': base_lr * 8, 'weight_decay': 0},
{'params': get_parameters_bn(net.refinement_stages, 'weight'), 'weight_decay': 0},
{'params': get_parameters_bn(net.refinement_stages, 'bias'), 'lr': base_lr * 2, 'weight_decay': 0},
], lr=base_lr, weight_decay=5e-4)
num_iter = 0
current_epoch = 0
drop_after_epoch = [100, 200, 260]
#torch.optim.lr_scheduler provides several methods to adjust the learning rate based on the number of epochs. #------------------------VVI
scheduler = optim.lr_scheduler.MultiStepLR(optimizer, milestones=drop_after_epoch, gamma=0.333)
if checkpoint_path: #--------check if the training needs to be continued from a certain pth checkpoint
checkpoint = torch.load(checkpoint_path)#-------------VVI: it can be wts for other parts along with the mobile net wts or only the mobilenet
if from_mobilenet:
load_from_mobilenet(net, checkpoint)#target, source
else:
load_state(net, checkpoint)
if not weights_only:#--------------------------------------If you want to load not only the weights but also other parameters
optimizer.load_state_dict(checkpoint['optimizer'])#-----------------when we save a model we save not only weights but also things like lr and thus
scheduler.load_state_dict(checkpoint['scheduler'])#-----------------we can load them like this
num_iter = checkpoint['iter']
current_epoch = checkpoint['current_epoch']
net = DataParallel(net).cuda()
net.train()
for epochId in range(current_epoch, 280):#------------------------------------------------------training for only 280 epochs
print("This is Epoch No ",str(epochId))
scheduler.step()
total_losses = [0, 0] * (num_refinement_stages + 1) # heatmaps loss, paf loss per stage
batch_per_iter_idx = 0
for batch_data in train_loader:
if batch_per_iter_idx == 0:
optimizer.zero_grad()
images = batch_data['image'].cuda()
keypoint_masks = batch_data['keypoint_mask'].cuda()
paf_masks = batch_data['paf_mask'].cuda()
keypoint_maps = batch_data['keypoint_maps'].cuda()
paf_maps = batch_data['paf_maps'].cuda()
# import time
# print(images.shape)
# time.sleep(222)
stages_output = net(images)
losses = []
for loss_idx in range(len(total_losses) // 2):
losses.append(l2_loss(stages_output[loss_idx * 2], keypoint_maps, keypoint_masks, images.shape[0]))
losses.append(l2_loss(stages_output[loss_idx * 2 + 1], paf_maps, paf_masks, images.shape[0]))
total_losses[loss_idx * 2] += losses[-2].item() / batches_per_iter
total_losses[loss_idx * 2 + 1] += losses[-1].item() / batches_per_iter
loss = losses[0]
for loss_idx in range(1, len(losses)):
loss += losses[loss_idx]
loss /= batches_per_iter
loss.backward()
batch_per_iter_idx += 1
if batch_per_iter_idx == batches_per_iter:
optimizer.step()
batch_per_iter_idx = 0
num_iter += 1
else:
continue
if num_iter % log_after == 0:
print('Iter: {}'.format(num_iter))
for loss_idx in range(len(total_losses) // 2):
print('\n'.join(['stage{}_pafs_loss: {}', 'stage{}_heatmaps_loss: {}']).format(
loss_idx + 1, total_losses[loss_idx * 2 + 1] / log_after,
loss_idx + 1, total_losses[loss_idx * 2] / log_after))
for loss_idx in range(len(total_losses)):
total_losses[loss_idx] = 0
if num_iter % checkpoint_after == 0:
snapshot_name = '{}/checkpoint_iter_{}_after_37000.pth'.format(checkpoints_folder, num_iter)
torch.save({'state_dict': net.module.state_dict(),
'optimizer': optimizer.state_dict(),
'scheduler': scheduler.state_dict(),
'iter': num_iter,
'current_epoch': epochId},
snapshot_name)
if num_iter % val_after == 0:
print('Validation...')
evaluate(val_labels, val_output_name, val_images_folder, net)
net.train()
def train(prepared_train_labels, train_images_folder, num_refinement_stages,
base_lr, batch_size, batches_per_iter, num_workers, checkpoint_path,
weights_only, from_mobilenet, checkpoints_folder, log_after,
val_labels, val_images_folder, val_output_name, checkpoint_after,
val_after):
net = PoseEstimationWithMobileNet(num_refinement_stages)
stride = 8
sigma = 7
path_thickness = 1
dataset = CocoTrainDataset(prepared_train_labels,
train_images_folder,
stride,
sigma,
path_thickness,
transform=transforms.Compose([
ConvertKeypoints(),
Scale(),
Rotate(pad=(128, 128, 128)),
CropPad(pad=(128, 128, 128)),
Flip()
]))
train_loader = DataLoader(dataset,
batch_size=batch_size,
shuffle=True,
num_workers=num_workers)
optimizer = optim.Adam([
{
'params': get_parameters_conv(net.model, 'weight')
},
{
'params': get_parameters_conv_depthwise(net.model, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_bn(net.model, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_bn(net.model, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
{
'params': get_parameters_conv(net.cpm, 'weight'),
'lr': base_lr
},
{
'params': get_parameters_conv(net.cpm, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
{
'params': get_parameters_conv_depthwise(net.cpm, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_conv(net.initial_stage, 'weight'),
'lr': base_lr
},
{
'params': get_parameters_conv(net.initial_stage, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
{
'params': get_parameters_conv(net.refinement_stages, 'weight'),
'lr': base_lr * 4
},
{
'params': get_parameters_conv(net.refinement_stages, 'bias'),
'lr': base_lr * 8,
'weight_decay': 0
},
{
'params': get_parameters_bn(net.refinement_stages, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_bn(net.refinement_stages, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
],
lr=base_lr,
weight_decay=5e-4)
num_iter = 0
current_epoch = 0
drop_after_epoch = [100, 200, 260]
scheduler = optim.lr_scheduler.MultiStepLR(optimizer,
milestones=drop_after_epoch,
gamma=0.333)
if checkpoint_path:
checkpoint = torch.load(checkpoint_path)
if from_mobilenet:
load_from_mobilenet(net, checkpoint)
else:
load_state(net, checkpoint)
if not weights_only:
optimizer.load_state_dict(checkpoint['optimizer'])
scheduler.load_state_dict(checkpoint['scheduler'])
num_iter = checkpoint['iter']
current_epoch = checkpoint['current_epoch']
net = DataParallel(net).cuda()
net.train()
for epochId in range(current_epoch, 280):
scheduler.step()
total_losses = [0, 0] * (num_refinement_stages + 1
) # heatmaps loss, paf loss per stage
batch_per_iter_idx = 0
for batch_data in train_loader:
if batch_per_iter_idx == 0:
optimizer.zero_grad()
# print("show imgs"
# , batch_data['keypoint_maps'].shape, batch_data['paf_maps'].shape
# , batch_data['keypoint_mask'].shape, batch_data['paf_mask'].shape
# , batch_data['mask'].shape, batch_data['image'].shape
# )
# print("seg", batch_data['label']['segmentations'])
print("batched images size", batch_data['image'].shape)
vis.images(batch_data['image'][:, [2, 1, 0], ...] + 0.5,
4,
2,
"1",
opts=dict(title="img"))
vis.images(batch_data['keypoint_mask'].permute(1, 0, 2, 3),
4,
2,
"2",
opts=dict(title="kp_mask"))
vis.images(batch_data['paf_mask'].permute(1, 0, 2, 3),
4,
2,
"3",
opts=dict(title="paf_mask"))
vis.images(batch_data['keypoint_maps'].permute(1, 0, 2, 3),
4,
2,
"4",
opts=dict(title="keypoint_maps"))
vis.images(batch_data['paf_maps'].permute(1, 0, 2, 3),
4,
2,
"5",
opts=dict(title="paf_maps"))
vis.images(batch_data['mask'].unsqueeze(0),
4,
2,
"6",
opts=dict(title="MASK"))
images = batch_data['image'].cuda()
keypoint_masks = batch_data['keypoint_mask'].cuda()
paf_masks = batch_data['paf_mask'].cuda()
keypoint_maps = batch_data['keypoint_maps'].cuda()
paf_maps = batch_data['paf_maps'].cuda()
pafs = batch_data['paf_maps'][0].permute(1, 2, 0).numpy()
scale = 4
img_p = np.zeros((pafs.shape[1] * 8, pafs.shape[0] * 8, 3),
dtype=np.uint8)
# pafs[pafs < 0.07] = 0
for idx in range(len(BODY_PARTS_PAF_IDS)):
# print(pp, pafs.shape)
pp = BODY_PARTS_PAF_IDS[idx]
k_idx = BODY_PARTS_KPT_IDS[idx]
cc = BODY_CONN_COLOR[idx]
vx = pafs[:, :, pp[0]]
vy = pafs[:, :, pp[1]]
for i in range(pafs.shape[1]):
for j in range(pafs.shape[0]):
a = (i * 2 * scale, j * 2 * scale)
b = (2 * int((i + vx[j, i] * 3) * scale), 2 * int(
(j + vy[j, i] * 3) * scale))
if a[0] == b[0] and a[1] == b[1]:
continue
cv2.line(img_p, a, b, cc, 1)
# break
cv2.imshow("paf", img_p)
key = cv2.waitKey(0)
if key == 27: # esc
exit(0)
stages_output = net(images)
losses = []
for loss_idx in range(len(total_losses) // 2):
losses.append(
l2_loss(stages_output[loss_idx * 2], keypoint_maps,
keypoint_masks, images.shape[0]))
losses.append(
l2_loss(stages_output[loss_idx * 2 + 1], paf_maps,
paf_masks, images.shape[0]))
total_losses[loss_idx *
2] += losses[-2].item() / batches_per_iter
total_losses[loss_idx * 2 +
1] += losses[-1].item() / batches_per_iter
loss = losses[0]
for loss_idx in range(1, len(losses)):
loss += losses[loss_idx]
loss /= batches_per_iter
loss.backward()
batch_per_iter_idx += 1
if batch_per_iter_idx == batches_per_iter:
optimizer.step()
batch_per_iter_idx = 0
num_iter += 1
else:
continue
if num_iter % log_after == 0:
print('Iter: {}'.format(num_iter))
for loss_idx in range(len(total_losses) // 2):
print('\n'.join([
'stage{}_pafs_loss: {}',
'stage{}_heatmaps_loss: {}'
]).format(loss_idx + 1,
total_losses[loss_idx * 2 + 1] / log_after,
loss_idx + 1,
total_losses[loss_idx * 2] / log_after))
for loss_idx in range(len(total_losses)):
total_losses[loss_idx] = 0
if num_iter % checkpoint_after == 0:
snapshot_name = '{}/checkpoint_iter_{}.pth'.format(
checkpoints_folder, num_iter)
torch.save(
{
'state_dict': net.module.state_dict(),
'optimizer': optimizer.state_dict(),
'scheduler': scheduler.state_dict(),
'iter': num_iter,
'current_epoch': epochId
}, snapshot_name)
if num_iter % val_after == 0:
print('Validation...')
evaluate(val_labels, val_output_name, val_images_folder, net)
net.train()
def train(prepared_train_labels, train_images_folder, num_refinement_stages,
base_lr, batch_size, batches_per_iter, num_workers, checkpoint_path,
weights_only, from_mobilenet, checkpoints_folder, log_after,
val_labels, val_images_folder, val_output_name, checkpoint_after,
val_after):
net = PoseEstimationWithMobileNet(num_refinement_stages)
stride = 8
sigma = 7
path_thickness = 1
dataset = CocoTrainDataset(prepared_train_labels,
train_images_folder,
stride,
sigma,
path_thickness,
transform=transforms.Compose([
ConvertKeypoints(),
Scale(),
Rotate(pad=(128, 128, 128)),
CropPad(pad=(128, 128, 128)),
Flip()
]))
train_loader = DataLoader(dataset,
batch_size=batch_size,
shuffle=True,
num_workers=num_workers)
optimizer = optim.Adam([
{
'params': get_parameters_conv(net.model, 'weight')
},
{
'params': get_parameters_conv_depthwise(net.model, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_bn(net.model, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_bn(net.model, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
{
'params': get_parameters_conv(net.cpm, 'weight'),
'lr': base_lr
},
{
'params': get_parameters_conv(net.cpm, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
{
'params': get_parameters_conv_depthwise(net.cpm, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_conv(net.initial_stage, 'weight'),
'lr': base_lr
},
{
'params': get_parameters_conv(net.initial_stage, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
{
'params': get_parameters_conv(net.refinement_stages, 'weight'),
'lr': base_lr * 4
},
{
'params': get_parameters_conv(net.refinement_stages, 'bias'),
'lr': base_lr * 8,
'weight_decay': 0
},
{
'params': get_parameters_bn(net.refinement_stages, 'weight'),
'weight_decay': 0
},
{
'params': get_parameters_bn(net.refinement_stages, 'bias'),
'lr': base_lr * 2,
'weight_decay': 0
},
],
lr=base_lr,
weight_decay=5e-4)
num_iter = 0
current_epoch = 0
drop_after_epoch = [100, 200, 260]
scheduler = optim.lr_scheduler.MultiStepLR(optimizer,
milestones=drop_after_epoch,
gamma=0.333)
if checkpoint_path:
checkpoint = torch.load(checkpoint_path)
if from_mobilenet:
load_from_mobilenet(net, checkpoint)
else:
load_state(net, checkpoint)
if not weights_only:
optimizer.load_state_dict(checkpoint['optimizer'])
scheduler.load_state_dict(checkpoint['scheduler'])
num_iter = checkpoint['iter']
current_epoch = checkpoint['current_epoch']
print("optimizer LR")
for param_group in optimizer.param_groups:
print(param_group['lr'])
for state in optimizer.state.values():
for k, v in state.items():
if isinstance(v, torch.Tensor):
state[k] = v.cuda()
net = DataParallel(net).cuda()
net.train()
from DGPT.Visualize.Viz import Viz
viz = Viz(dict(env="refine"))
for epochId in range(current_epoch, 280):
# scheduler.step()
total_losses = [0, 0] * (num_refinement_stages + 1
) # heatmaps loss, paf loss per stage
batch_per_iter_idx = 0
for batch_data in train_loader:
if batch_per_iter_idx == 0:
optimizer.zero_grad()
images = batch_data['image'].cuda()
keypoint_masks = batch_data['keypoint_mask'].cuda()
paf_masks = batch_data['paf_mask'].cuda()
keypoint_maps = batch_data['keypoint_maps'].cuda()
paf_maps = batch_data['paf_maps'].cuda()
images = preprocess(images)
stages_output = net(images)
losses = []
for loss_idx in range(len(total_losses) // 2):
losses.append(
l2_loss(stages_output[loss_idx * 2], keypoint_maps,
keypoint_masks, images.shape[0]))
losses.append(
l2_loss(stages_output[loss_idx * 2 + 1], paf_maps,
paf_masks, images.shape[0]))
total_losses[loss_idx *
2] += losses[-2].item() / batches_per_iter
total_losses[loss_idx * 2 +
1] += losses[-1].item() / batches_per_iter
loss = losses[0]
for loss_idx in range(1, len(losses)):
loss += losses[loss_idx]
loss /= batches_per_iter
loss.backward()
viz.draw_line(num_iter, loss.item(), "Loss")
batch_per_iter_idx += 1
if batch_per_iter_idx == batches_per_iter:
optimizer.step()
batch_per_iter_idx = 0
num_iter += 1
scheduler.step()
else:
continue
if num_iter % log_after == 0:
print('Iter: {}'.format(num_iter))
for loss_idx in range(len(total_losses) // 2):
print('\n'.join([
'stage{}_pafs_loss: {}',
'stage{}_heatmaps_loss: {}'
]).format(loss_idx + 1,
total_losses[loss_idx * 2 + 1] / log_after,
loss_idx + 1,
total_losses[loss_idx * 2] / log_after))
for loss_idx in range(len(total_losses)):
total_losses[loss_idx] = 0
xx = images[:1, ...].detach() #.clone()
hh = keypoint_maps[:1, ...].detach() #.clone()
mm = keypoint_masks[:1, ...].detach() #.clone()
print(xx.shape, hh.shape, mm.shape)
hh = hh.squeeze(0).reshape(19, 1, hh.shape[2], hh.shape[3])
mm = mm.squeeze(0).reshape(19, 1, hh.shape[2], hh.shape[3])
viz.draw_images(xx, "input1")
viz.draw_images(hh, "input1_heatmap")
viz.draw_images(mm, "input1_mask")
oh = stages_output[-2].detach()[:1, :-1, ...]
oh = oh.reshape(oh.shape[1], 1, oh.shape[2], oh.shape[3])
viz.draw_images(oh, "output1_heatmap")
if num_iter % checkpoint_after == 0:
snapshot_name = '{}/checkpoint_iter_{}.pth'.format(
checkpoints_folder, num_iter)
torch.save(
{
'state_dict': net.module.state_dict(),
'optimizer': optimizer.state_dict(),
'scheduler': scheduler.state_dict(),
'iter': num_iter,
'current_epoch': epochId
}, snapshot_name)
if num_iter % val_after == 0:
print('Validation...')
evaluate(val_labels, val_output_name, val_images_folder, net)
net.train()