def train(opt):
print("Training model with the following parameters:")
print("\t number of stages: {}".format(opt.train_stages))
print("\t number of concurrently trained stages: {}".format(opt.train_depth))
print("\t learning rate scaling: {}".format(opt.lr_scale))
print("\t non-linearity: {}".format(opt.activation))
real, real2 = functions.read_two_domains(opt)
# real = functions.read_image(opt)
# print(0, real.shape)
real = functions.adjust_scales2image(real, opt)
reals = functions.create_reals_pyramid(real, opt)
real2 = functions.adjust_scales2image(real2, opt)
reals2 = functions.create_reals_pyramid(real2, opt)
generator, generator2 = init_G(opt)
fixed_noise = []
noise_amp = []
fixed_noise2 = []
noise_amp2 = []
for scale_num in range(opt.stop_scale+1):
opt.out_ = functions.generate_dir2save(opt)
opt.outf = '%s/%d' % (opt.out_,scale_num)
try:
os.makedirs(opt.outf)
except OSError:
print(OSError)
pass
functions.save_image('{}/real_scale.jpg'.format(opt.outf), reals[scale_num])
d_curr, d_curr2 = init_D(opt)
if scale_num > 0:
d_curr.load_state_dict(torch.load('%s/%d/netD.pth' % (opt.out_,scale_num-1)))
generator.init_next_stage()
d_curr2.load_state_dict(torch.load('%s/%d/netD2.pth' % (opt.out_,scale_num-1)))
generator2.init_next_stage()
writer = SummaryWriter(log_dir=opt.outf)
fixed_noise, noise_amp, generator, d_curr, fixed_noise2, noise_amp2, generator2, d_curr2 = \
train_single_scale(d_curr, generator, reals, fixed_noise, noise_amp, d_curr2, generator2, reals2,
fixed_noise2, noise_amp2, opt, scale_num, writer)
torch.save(fixed_noise, '%s/fixed_noise.pth' % (opt.out_))
torch.save(generator, '%s/G.pth' % (opt.out_))
torch.save(reals, '%s/reals.pth' % (opt.out_))
torch.save(noise_amp, '%s/noise_amp.pth' % (opt.out_))
torch.save(fixed_noise2, '%s/fixed_noise2.pth' % (opt.out_))
torch.save(generator2, '%s/G2.pth' % (opt.out_))
torch.save(reals2, '%s/reals2.pth' % (opt.out_))
torch.save(noise_amp2, '%s/noise_amp2.pth' % (opt.out_))
del d_curr, d_curr2
writer.close()
return
def generate_samples(netG, opt, depth, noise_amp, writer, reals, iter, n=25):
opt.out_ = functions.generate_dir2save(opt)
dir2save = '{}/gen_samples_stage_{}'.format(opt.out_, depth)
reals_shapes = [r.shape for r in reals]
all_images = []
try:
os.makedirs(dir2save)
except OSError:
pass
with torch.no_grad():
for idx in range(n):
noise = functions.sample_random_noise(depth, reals_shapes, opt)
sample = netG(noise, reals_shapes, noise_amp)
all_images.append(sample)
functions.save_image('{}/gen_sample_{}.jpg'.format(dir2save, idx), sample.detach())
all_images = torch.cat(all_images, 0)
all_images[0] = reals[depth].squeeze()
grid = make_grid(all_images, nrow=min(5, n), normalize=True)
writer.add_image('gen_images_{}'.format(depth), grid, iter)
if opt.fine_tune:
if opt.model_dir == "":
print("Model for fine tuning not specified.")
print("Please use --model_dir to define model location.")
exit()
else:
if not os.path.exists(opt.model_dir):
print("Model does not exist: {}".format(opt.model_dir))
print("Please specify a valid model.")
exit()
if not os.path.exists(opt.naive_img):
print("Image for harmonization/editing not found: {}".format(opt.naive_img))
exit()
from ConSinGAN.training_harmonization_editing import *
dir2save = functions.generate_dir2save(opt)
if osp.exists(dir2save):
print('Trained model already exist: {}'.format(dir2save))
exit()
# create log dir
try:
os.makedirs(dir2save)
except OSError:
pass
# save hyperparameters and code files
with open(osp.join(dir2save, 'parameters.txt'), 'w') as f:
for o in opt.__dict__:
f.write("{}\t-\t{}\n".format(o, opt.__dict__[o]))
def generate_samples(netG,
img_to_augment,
naive_img,
naive_img_large,
aug,
opt,
depth,
noise_amp,
writer,
reals,
iter,
n=16):
opt.out_ = functions.generate_dir2save(opt)
dir2save = '{}/harmonized_samples_stage_{}'.format(opt.out_, depth)
reals_shapes = [r.shape for r in reals]
_name = "harmonized" if opt.train_mode == "harmonization" else "edited"
images = []
try:
os.makedirs(dir2save)
except OSError:
pass
if naive_img is not None:
n = n - 1
if opt.fine_tune:
n = 1
with torch.no_grad():
for idx in range(n):
noise = []
for d in range(depth + 1):
if d == 0:
if opt.fine_tune:
if opt.train_mode == "harmonization":
augmented_image = functions.np2torch(
naive_img, opt)
noise.append(augmented_image)
elif opt.train_mode == "editing":
augmented_image = functions.np2torch(
naive_img, opt)
noise.append(augmented_image + opt.noise_scaling *
functions.generate_noise(
[
opt.nc_im, reals_shapes[d][2],
reals_shapes[d][3]
],
device=opt.device).detach())
else:
if opt.train_mode == "harmonization":
data = {"image": img_to_augment}
augmented = aug.transform(**data)
augmented_image = functions.np2torch(
augmented["image"], opt)
noise.append(augmented_image)
elif opt.train_mode == "editing":
image = functions.shuffle_grid(img_to_augment)
augmented_image = functions.np2torch(image, opt)
noise.append(augmented_image + opt.noise_scaling *
functions.generate_noise(
[
opt.nc_im, reals_shapes[d][2],
reals_shapes[d][3]
],
device=opt.device).detach())
else:
noise.append(
functions.generate_noise(
[opt.nfc, reals_shapes[d][2], reals_shapes[d][3]],
device=opt.device).detach())
sample = netG(noise, reals_shapes, noise_amp)
functions.save_image(
'{}/{}_naive_sample.jpg'.format(dir2save, idx),
augmented_image)
functions.save_image(
'{}/{}_{}_sample.jpg'.format(dir2save, idx, _name),
sample.detach())
augmented_image = imresize_to_shape(augmented_image,
sample.shape[2:], opt)
images.append(augmented_image)
images.append(sample.detach())
if opt.fine_tune:
mask_file_name = '{}_mask{}'.format(opt.naive_img[:-4],
opt.naive_img[-4:])
augmented_image = imresize_to_shape(naive_img_large,
sample.shape[2:], opt)
if os.path.exists(mask_file_name):
mask = get_mask(mask_file_name, augmented_image, opt)
sample_w_mask = (
1 - mask) * augmented_image + mask * sample.detach()
functions.save_image(
'{}/{}_sample_w_mask_{}.jpg'.format(dir2save, _name, iter),
sample_w_mask.detach())
images = torch.cat(
[augmented_image,
sample.detach(), sample_w_mask], 0)
grid = make_grid(images, nrow=3, normalize=True)
writer.add_image('{}_images_{}'.format(_name, depth), grid,
iter)
else:
print(
"Warning: no mask with name {} exists for image {}".format(
mask_file_name, opt.input_name))
print("Only showing results without mask.")
images = torch.cat([augmented_image, sample.detach()], 0)
grid = make_grid(images, nrow=2, normalize=True)
writer.add_image('{}_images_{}'.format(_name, depth), grid,
iter)
functions.save_image(
'{}/{}_sample_{}.jpg'.format(dir2save, _name, iter),
sample.detach())
else:
if naive_img is not None:
noise = []
for d in range(depth + 1):
if d == 0:
if opt.train_mode == "harmonization":
noise.append(functions.np2torch(naive_img, opt))
elif opt.train_mode == "editing":
noise.append(functions.np2torch(naive_img, opt) + opt.noise_scaling * \
functions.generate_noise([opt.nc_im, reals_shapes[d][2],
reals_shapes[d][3]],
device=opt.device).detach())
else:
noise.append(
functions.generate_noise(
[
opt.nfc, reals_shapes[d][2],
reals_shapes[d][3]
],
device=opt.device).detach())
sample = netG(noise, reals_shapes, noise_amp)
_naive_img = imresize_to_shape(naive_img_large,
sample.shape[2:], opt)
images.insert(0, sample.detach())
images.insert(0, _naive_img)
functions.save_image(
'{}/{}_sample_{}.jpg'.format(dir2save, _name, iter),
sample.detach())
mask_file_name = '{}_mask{}'.format(opt.naive_img[:-4],
opt.naive_img[-4:])
if os.path.exists(mask_file_name):
mask = get_mask(mask_file_name, _naive_img, opt)
sample_w_mask = (
1 - mask) * _naive_img + mask * sample.detach()
functions.save_image(
'{}/{}_sample_w_mask_{}.jpg'.format(
dir2save, _name, iter), sample_w_mask)
images = torch.cat(images, 0)
grid = make_grid(images, nrow=4, normalize=True)
writer.add_image('{}_images_{}'.format(_name, depth), grid, iter)
def train(opt):
print("Training model with the following parameters:")
print("\t number of stages: {}".format(opt.train_stages))
print("\t number of concurrently trained stages: {}".format(
opt.train_depth))
print("\t learning rate scaling: {}".format(opt.lr_scale))
print("\t non-linearity: {}".format(opt.activation))
real = functions.read_image(opt)
real = functions.adjust_scales2image(real, opt)
reals = functions.create_reals_pyramid(real, opt)
print("Training on image pyramid: {}".format([r.shape for r in reals]))
print("")
if opt.naive_img != "":
naive_img = functions.read_image_dir(opt.naive_img, opt)
naive_img_large = imresize_to_shape(naive_img, reals[-1].shape[2:],
opt)
naive_img = imresize_to_shape(naive_img, reals[0].shape[2:], opt)
naive_img = functions.convert_image_np(naive_img) * 255.0
else:
naive_img = None
naive_img_large = None
if opt.fine_tune:
img_to_augment = naive_img
else:
img_to_augment = functions.convert_image_np(reals[0]) * 255.0
if opt.train_mode == "editing":
opt.noise_scaling = 0.1
generator = init_G(opt)
if opt.fine_tune:
for _ in range(opt.train_stages - 1):
generator.init_next_stage()
generator.load_state_dict(
torch.load(
'{}/{}/netG.pth'.format(opt.model_dir, opt.train_stages - 1),
map_location="cuda:{}".format(torch.cuda.current_device())))
fixed_noise = []
noise_amp = []
for scale_num in range(opt.start_scale, opt.train_stages):
opt.out_ = functions.generate_dir2save(opt)
opt.outf = '%s/%d' % (opt.out_, scale_num)
try:
os.makedirs(opt.outf)
except OSError:
print(OSError)
pass
functions.save_image('{}/real_scale.jpg'.format(opt.outf),
reals[scale_num])
d_curr = init_D(opt)
if opt.fine_tune:
d_curr.load_state_dict(
torch.load('{}/{}/netD.pth'.format(opt.model_dir,
opt.train_stages - 1),
map_location="cuda:{}".format(
torch.cuda.current_device())))
elif scale_num > 0:
d_curr.load_state_dict(
torch.load('%s/%d/netD.pth' % (opt.out_, scale_num - 1)))
generator.init_next_stage()
writer = SummaryWriter(log_dir=opt.outf)
fixed_noise, noise_amp, generator, d_curr = train_single_scale(
d_curr, generator, reals, img_to_augment, naive_img,
naive_img_large, fixed_noise, noise_amp, opt, scale_num, writer)
torch.save(fixed_noise, '%s/fixed_noise.pth' % (opt.out_))
torch.save(generator, '%s/G.pth' % (opt.out_))
torch.save(reals, '%s/reals.pth' % (opt.out_))
torch.save(noise_amp, '%s/noise_amp.pth' % (opt.out_))
del d_curr
writer.close()
return