def see_image(args):
celeba = CelebA('../../../local/CelebA/',
'img_align_celeba',
'list_attr_celeba.csv',
transform=transform)
gen = Generator(140)
gen = gen.to(device)
z = torch.randn((args.show_size, 100)).to(device)
y = randomsample(celeba, args.show_size).to(device)
eps = [i for i in range(1, args.max_epoch) if i % 5 == 0]
for ep in eps:
path = '../model/gen_epoch_{}.model'.format(ep)
gen.load_state_dict(torch.load(path))
attrnames = list(celeba.df.columns)[1:]
out = gen(z, y).detach().cpu()
vutils.save_image(out, '../out/sample_out_ep{}.png'.format(ep))
multihot = y.detach().cpu().numpy()
idxs = np.where(multihot == 1)
a = []
piv = 0
with open('../out/sample_attr.txt', 'w') as f:
for i, j in zip(*idxs):
if i == piv:
a.append(attrnames[j])
else:
f.write('{}th image: {}\n'.format(piv, a))
a = []
piv += 1
def cli(ctx, profile, snapshot):
# load hyper-parameters
hps = util.load_profile(profile)
util.manual_seed(hps.ablation.seed)
if snapshot is not None:
hps.general.warm_start = True
hps.general.pre_trained = snapshot
# build graph
builder = Builder(hps)
state = builder.build(training=False)
# load dataset
dataset = CelebA(root=hps.dataset.root,
transform=transforms.Compose(
(transforms.CenterCrop(160), transforms.Resize(128),
transforms.ToTensor())))
# start inference
inferer = Inferer(hps=hps,
graph=state['graph'],
devices=state['devices'],
data_device=state['data_device'])
ctx.obj['hps'] = hps
ctx.obj['dataset'] = dataset
ctx.obj['inferer'] = inferer
def main():
parser = argparse.ArgumentParser(description='')
parser.add_argument('--gpu',
'-g',
type=int,
default=0,
help='GPU device ID')
parser.add_argument('--epoch',
'-e',
type=int,
default=300,
help='# of epoch')
parser.add_argument('--batch_size',
'-b',
type=int,
default=100,
help='learning minibatch size')
parser.add_argument('--g_hidden', type=int, default=128)
parser.add_argument('--g_arch', type=int, default=1)
parser.add_argument('--g_activate', type=str, default='sigmoid')
parser.add_argument('--g_channel', type=int, default=512)
parser.add_argument('--d_arch', type=int, default=1)
parser.add_argument('--d_iters', type=int, default=5)
parser.add_argument('--d_clip', type=float, default=0.01)
parser.add_argument('--d_use_gamma', action='store_true', default=False)
parser.add_argument('--d_channel', type=int, default=512)
parser.add_argument('--initial_iter', type=int, default=10)
parser.add_argument('--resume', default='')
parser.add_argument('--out', default='')
# args = parser.parse_args()
args, unknown = parser.parse_known_args()
# log directory
out = datetime.datetime.now().strftime('%m%d%H%M')
if args.out:
out = out + '_' + args.out
out_dir = os.path.abspath(os.path.join(os.path.curdir, "runs", out))
os.makedirs(os.path.join(out_dir, 'models'), exist_ok=True)
os.makedirs(os.path.join(out_dir, 'visualize'), exist_ok=True)
# hyper parameter
with open(os.path.join(out_dir, 'setting.txt'), 'w') as f:
for k, v in args._get_kwargs():
print('{} = {}'.format(k, v))
f.write('{} = {}\n'.format(k, v))
# tensorboard
if use_tensorboard:
sess = tf.Session()
sess.run(tf.initialize_all_variables())
summary_dir = os.path.join(out_dir, "summaries")
loss_ = tf.placeholder(tf.float32)
gen_loss_summary = tf.scalar_summary('gen_loss', loss_)
dis_loss_summary = tf.scalar_summary('dis_loss', loss_)
summary_writer = tf.train.SummaryWriter(summary_dir, sess.graph)
# load celebA
dataset = CelebA(image_type=args.g_activate)
train_iter = chainer.iterators.MultiprocessIterator(
dataset, args.batch_size)
if args.g_arch == 1:
gen = wgan.Generator(n_hidden=args.g_hidden,
activate=args.g_activate,
ch=args.g_channel)
elif args.g_arch == 2:
gen = wgan.Generator2(n_hidden=args.g_hidden,
activate=args.g_activate,
ch=args.g_channel)
else:
raise ValueError('invalid arch')
if args.d_arch == 1:
dis = wgan.Discriminator(ch=args.d_channel, use_gamma=args.d_use_gamma)
elif args.d_arch == 2:
dis = wgan.Discriminator2(ch=args.d_channel)
else:
raise ValueError('invalid arch')
if args.gpu >= 0:
cuda.get_device(args.gpu).use()
gen.to_gpu()
dis.to_gpu()
optimizer_gen = chainer.optimizers.RMSprop(lr=0.00005)
optimizer_dis = chainer.optimizers.RMSprop(lr=0.00005)
optimizer_gen.setup(gen)
optimizer_dis.setup(dis)
# optimizer_gen.add_hook(chainer.optimizer.WeightDecay(0.00001))
# optimizer_dis.add_hook(chainer.optimizer.WeightDecay(0.00001))
# start training
start = time.time()
gen_iterations = 0
for epoch in range(args.epoch):
# train
sum_L_gen = []
sum_L_dis = []
i = 0
while i < len(dataset) // args.batch_size:
# tips for critic reach optimality
if gen_iterations < args.initial_iter or gen_iterations % 500 == 0:
d_iters = 100
else:
d_iters = args.d_iters
############################
# (1) Update D network
###########################
j = 0
while j < d_iters:
batch = train_iter.next()
x = chainer.Variable(
gen.xp.asarray([b[0] for b in batch], 'float32'))
# attr = chainer.Variable(gen.xp.asarray([b[1] for b in batch], 'int32'))
# real
y_real = dis(x)
# fake
z = chainer.Variable(gen.xp.asarray(
gen.make_hidden(args.batch_size)),
volatile=True)
x_fake = gen(z)
x_fake.volatile = False
y_fake = dis(x_fake)
# calc EMD
L_dis = -(y_real - y_fake)
dis.cleargrads()
L_dis.backward()
optimizer_dis.update()
dis.clip_weight(clip=args.d_clip)
j += 1
i += 1
###########################
# (2) Update G network
###########################
z = chainer.Variable(
gen.xp.asarray(gen.make_hidden(args.batch_size)))
x_fake = gen(z)
y_fake = dis(x_fake)
L_gen = -y_fake
gen.cleargrads()
L_gen.backward()
optimizer_gen.update()
gen_iterations += 1
emd = float(-L_dis.data)
l_gen = float(L_gen.data)
sum_L_dis.append(emd)
sum_L_gen.append(l_gen)
progress_report(epoch * len(dataset) // args.batch_size + i, start,
args.batch_size, emd)
if use_tensorboard:
summary = sess.run(gen_loss_summary, feed_dict={loss_: l_gen})
summary_writer.add_summary(summary, gen_iterations)
summary = sess.run(dis_loss_summary, feed_dict={loss_: emd})
summary_writer.add_summary(summary, gen_iterations)
log = 'gen loss={:.5f}, dis loss={:.5f}'.format(
np.mean(sum_L_gen), np.mean(sum_L_dis))
print('\n' + log)
with open(os.path.join(out_dir, "log"), 'a+') as f:
f.write(log + '\n')
if epoch % 5 == 0:
serializers.save_hdf5(
os.path.join(out_dir, "models",
"{:03d}.dis.model".format(epoch)), dis)
serializers.save_hdf5(
os.path.join(out_dir, "models",
"{:03d}.gen.model".format(epoch)), gen)
visualize(gen,
epoch=epoch,
savedir=os.path.join(out_dir, 'visualize'),
image_type=args.g_activate)
optimizerQ = torch.optim.RMSprop(Dis.modelQ.parameters(),
lr=opt.lrQ,
alpha=0.9,
eps=1e-8)
lrSchedulerE = torch.optim.lr_scheduler.ExponentialLR(optimizerE, opt.decayLr)
lrSchedulerD = torch.optim.lr_scheduler.ExponentialLR(optimizerD, opt.decayLr)
lrSchedulerDis = torch.optim.lr_scheduler.ExponentialLR(
optimizerDis, opt.decayLr)
lrSchedulerQ = torch.optim.lr_scheduler.ExponentialLR(optimizerQ, opt.decayLr)
# Path to data.
imgDirectory = "../../Downloads/img_align_celeba/"
# Create dataloader.
dataloader = DataLoader(CelebA(imgDirectory),
batch_size=opt.batchSize,
shuffle=True,
num_workers=opt.workers)
testBatch = next(iter(dataloader)).type(Tensor)
torchvision.utils.save_image(testBatch,
opt.outDir + '/testBatch.png',
normalize=True)
testLatent = torch.randn(64, opt.latentSize).type(Tensor)
# Lists to keep track of progress.
lossesKl = [] # KL divergence of the encoded distribution from the prior.
lossesD = [] # Decoder/Generator losses from the GAN objective.
lossesDis = [] # Discriminator losses from the GAN objective.
lossesDisL = [
print("Application Params: ", args)
print("Using GPU(s): ", args.gpu)
print("Running Mode:", args.mode)
print(" - Initializing Networks...")
decoder = Decoder(args)
encoder = Encoder(args)
generator = Generator(args, decoder)
discriminator = Discriminator(args, encoder)
adjuster = Adjuster(args, discriminator, generator)
if args.mode == "train":
repo = Repo(".")
if repo.is_dirty() and not args.debug: # 程序被修改且不是测试模式
raise EnvironmentError(
"Git repo is Dirty! Please train after committed.")
data = CelebA(args)
print("Using Attribute:", data.label)
model = EagerTrainer(args, generator, discriminator, adjuster, data)
model.train()
elif args.mode == "visual": # loss etc的可视化
print("The result path is ", path.join(args.result_dir, "log"))
system("tensorboard --host 0.0.0.0 --logdir " +
path.join(args.result_dir, "log"))
elif args.mode == "plot":
args.reuse = True
model = EagerTrainer(args, generator, discriminator, adjuster, None)
model.plot() # 输出模型结构图
elif args.mode == "random-sample":
args.reuse = True
data = CelebA(args)
print("Using Attribute:", data.label)
from dataset import CelebA
from models import alexnet
from models import resnet18
from args import args
device = 'cuda' if torch.cuda.is_available() else 'cpu'
best_acc = 0 # best test accuracy
start_epoch = 0 # start from epoch 0 or last checkpoint epoch
if __name__ == '__main__':
# Data
print('==> Preparing data ...')
train_set = CelebA(data_root=args.data_dir, attr=args.attr, split='train')
val_set = CelebA(data_root=args.data_dir, attr=args.attr, split='val')
train_loader = DataLoader(train_set,
args.batch_size,
drop_last=True,
shuffle=False,
num_workers=args.workers)
val_loader = DataLoader(val_set,
args.batch_size,
drop_last=True,
shuffle=False,
num_workers=args.workers)
classes = ('yes', 'no')
# Model
from tensorflow.keras.utils import multi_gpu_model
from tensorflow.keras.applications.mobilenet_v2 import MobileNetV2
from tensorflow.keras.callbacks import EarlyStopping
tf.enable_eager_execution()
batch_size = 64
num_epochs = 40
img_height = 32
img_width = 32
celeba = CelebA(drop_features=[
'5_o_Clock_Shadow', 'Arched_Eyebrows', 'Attractive', 'Bags_Under_Eyes',
'Bald', 'Bangs', 'Big_Lips', 'Big_Nose', 'Black_Hair', 'Blond_Hair',
'Blurry', 'Brown_Hair', 'Bushy_Eyebrows', 'Chubby', 'Double_Chin',
'Eyeglasses', 'Goatee', 'Gray_Hair', 'Heavy_Makeup', 'High_Cheekbones',
'Male', 'Mouth_Slightly_Open', 'Mustache', 'Narrow_Eyes', 'No_Beard',
'Oval_Face', 'Pale_Skin', 'Pointy_Nose', 'Receding_Hairline',
'Rosy_Cheeks', 'Sideburns', 'Smiling', 'Straight_Hair', 'Wavy_Hair',
'Wearing_Earrings', 'Wearing_Hat', 'Wearing_Lipstick', 'Wearing_Necklace',
'Wearing_Necktie'
])
train_datagen = ImageDataGenerator(rescale=1. / 255,
samplewise_center=True,
samplewise_std_normalization=True)
val_datagen = ImageDataGenerator(rescale=1. / 255,
samplewise_center=True,
samplewise_std_normalization=True)
test_datagen = ImageDataGenerator(rescale=1. / 255,
samplewise_center=True,
samplewise_std_normalization=True)
def main():
parser = argparse.ArgumentParser(description='')
parser.add_argument('--gpu',
'-g',
type=int,
default=0,
help='GPU device ID')
parser.add_argument('--epoch',
'-e',
type=int,
default=300,
help='# of epoch')
parser.add_argument('--batch_size',
'-b',
type=int,
default=100,
help='learning minibatch size')
parser.add_argument('--g_hidden', type=int, default=128)
parser.add_argument('--g_arch', type=int, default=1)
parser.add_argument('--g_activate', type=str, default='sigmoid')
parser.add_argument('--g_channel', type=int, default=512)
parser.add_argument('--C', type=float, default=1)
parser.add_argument('--d_arch', type=int, default=1)
parser.add_argument('--d_iters', type=int, default=5)
parser.add_argument('--d_clip', type=float, default=0.01)
parser.add_argument('--d_channel', type=int, default=512)
parser.add_argument('--initial_iter', type=int, default=10)
parser.add_argument('--resume', default='')
parser.add_argument('--out', default='')
# args = parser.parse_args()
args, unknown = parser.parse_known_args()
# log directory
out = datetime.datetime.now().strftime('%m%d%H%M')
if args.out:
out = out + '_' + args.out
out_dir = os.path.abspath(os.path.join(os.path.curdir, "runs", out))
os.makedirs(os.path.join(out_dir, 'models'), exist_ok=True)
os.makedirs(os.path.join(out_dir, 'visualize'), exist_ok=True)
# hyper parameter
with open(os.path.join(out_dir, 'setting.txt'), 'w') as f:
for k, v in args._get_kwargs():
print('{} = {}'.format(k, v))
f.write('{} = {}\n'.format(k, v))
# tensorboard
if use_tensorboard:
sess = tf.Session()
sess.run(tf.initialize_all_variables())
summary_dir = os.path.join(out_dir, "summaries")
loss_ = tf.placeholder(tf.float32)
gen_loss_summary = tf.scalar_summary('gen_loss', loss_)
dis_loss_summary = tf.scalar_summary('dis_loss', loss_)
enc_loss_summary = tf.scalar_summary('enc_loss', loss_)
rec_loss_summary = tf.scalar_summary('rec_loss', loss_)
summary_writer = tf.train.SummaryWriter(summary_dir, sess.graph)
# load celebA
dataset = CelebA(image_type=args.g_activate)
train_iter = chainer.iterators.MultiprocessIterator(
dataset, args.batch_size)
gen = vaewgan.Generator(n_hidden=args.g_hidden,
activate=args.g_activate,
ch=args.g_channel)
if args.d_arch == 1:
dis = vaewgan.Discriminator(ch=args.d_channel)
elif args.d_arch == 2:
dis = vaewgan.Discriminator2(ch=args.d_channel)
else:
raise ValueError('invalid arch')
enc = vaewgan.Encoder(n_hidden=args.g_hidden)
if args.gpu >= 0:
cuda.get_device(args.gpu).use()
gen.to_gpu()
dis.to_gpu()
enc.to_gpu()
optimizer_gen = chainer.optimizers.RMSprop(lr=0.00005)
optimizer_dis = chainer.optimizers.RMSprop(lr=0.00005)
optimizer_enc = chainer.optimizers.RMSprop(lr=0.00005)
optimizer_gen.setup(gen)
optimizer_dis.setup(dis)
optimizer_enc.setup(enc)
# optimizer_gen.add_hook(chainer.optimizer.WeightDecay(0.00001))
# optimizer_dis.add_hook(chainer.optimizer.WeightDecay(0.00001))
# optimizer_enc.add_hook(chainer.optimizer.WeightDecay(0.00001))
# start training
start = time.time()
gen_iterations = 0
for epoch in range(args.epoch):
# train
sum_L_gen = []
sum_L_dis = []
sum_L_enc = []
sum_L_rec = []
i = 0
while i < len(dataset) // args.batch_size:
# tips for critic reach optimality
if gen_iterations < args.initial_iter or gen_iterations % 500 == 0:
d_iters = 100
else:
d_iters = args.d_iters
############################
# (1) Update D network
###########################
j = 0
while j < d_iters:
batch = train_iter.next()
x = chainer.Variable(
gen.xp.asarray([b[0] for b in batch], 'float32'))
# attr = chainer.Variable(gen.xp.asarray([b[1] for b in batch], 'int32'))
# real image
y_real, _, _ = dis(x)
# fake image from random noize
z = chainer.Variable(gen.xp.asarray(
gen.make_hidden_normal(args.batch_size)),
volatile=True)
x_fake = gen(z)
x_fake.volatile = False
y_fake, _, _ = dis(x_fake)
# fake image from reconstruction
x.volatile = True
mu_z, ln_var_z = enc(x)
z_rec = F.gaussian(mu_z, ln_var_z)
x_rec = gen(z_rec)
x_rec.volatile = False
y_rec, _, _ = dis(x_rec)
L_dis = -(y_real - 0.5 * y_fake - 0.5 * y_rec)
# print(j, -L_dis.data)
dis.cleargrads()
L_dis.backward()
optimizer_dis.update()
dis.clip_weight(clip=args.d_clip)
j += 1
i += 1
###########################
# (2) Update Enc and Dec network
###########################
batch = train_iter.next()
x = chainer.Variable(
gen.xp.asarray([b[0] for b in batch], 'float32'))
z = chainer.Variable(
gen.xp.random.normal(
0, 1, (args.batch_size, args.g_hidden)).astype(np.float32))
# real image
y_real, l2_real, l3_real = dis(x)
# fake image from random noize
x_fake = gen(z)
y_fake, _, _ = dis(x_fake)
# fake image from reconstruction
mu_z, ln_var_z = enc(x)
z_rec = F.gaussian(mu_z, ln_var_z)
x_rec = gen(z_rec)
y_rec, l2_rec, l3_rec = dis(x_rec)
L_rec = F.mean_squared_error(
l2_real,
l2_rec) * l2_real.data.shape[2] * l2_real.data.shape[3]
L_prior = F.gaussian_kl_divergence(mu_z,
ln_var_z) / args.batch_size
L_gan = -0.5 * y_fake - 0.5 * y_rec
L_gen = L_gan + args.C * L_rec
L_enc = L_rec + L_prior
gen.cleargrads()
L_gen.backward()
optimizer_gen.update()
enc.cleargrads()
L_enc.backward()
optimizer_enc.update()
gen_iterations += 1
l_dis = float(-L_dis.data)
l_gen = float(L_gen.data)
l_enc = float(L_enc.data)
l_rec = float(L_rec.data)
sum_L_dis.append(l_dis)
sum_L_gen.append(l_gen)
sum_L_enc.append(l_enc)
sum_L_rec.append(l_rec)
progress_report(epoch * len(dataset) // args.batch_size + i, start,
args.batch_size, l_dis)
if use_tensorboard:
summary = sess.run(gen_loss_summary, feed_dict={loss_: l_gen})
summary_writer.add_summary(summary, gen_iterations)
summary = sess.run(dis_loss_summary, feed_dict={loss_: l_dis})
summary_writer.add_summary(summary, gen_iterations)
summary = sess.run(enc_loss_summary, feed_dict={loss_: l_enc})
summary_writer.add_summary(summary, gen_iterations)
summary = sess.run(rec_loss_summary, feed_dict={loss_: l_rec})
summary_writer.add_summary(summary, gen_iterations)
log = 'gen loss={:.5f} dis loss={:.5f} enc loss={:.5f} rec loss={:.5f}' \
.format(np.mean(sum_L_gen), np.mean(sum_L_dis), np.mean(sum_L_enc), np.mean(sum_L_rec))
print('\n' + log)
with open(os.path.join(out_dir, "log"), 'a+') as f:
f.write(log + '\n')
if epoch % 5 == 0:
serializers.save_hdf5(
os.path.join(out_dir, "models",
"{:03d}.dis.model".format(epoch)), dis)
serializers.save_hdf5(
os.path.join(out_dir, "models",
"{:03d}.gen.model".format(epoch)), gen)
serializers.save_hdf5(
os.path.join(out_dir, "models",
"{:03d}.enc.model".format(epoch)), enc)
visualize(gen,
enc,
train_iter,
epoch=epoch,
savedir=os.path.join(out_dir, 'visualize'),
image_type=args.g_activate)
enc_z.load_state_dict(torch.load(args.enc_z_path))
gen.load_state_dict(torch.load(args.gen_path))
enc_y.eval()
enc_z.eval()
gen.eval()
transform = transforms.Compose([
transforms.Resize((64, 64)),
transforms.ToTensor(),
transforms.Normalize(mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5))
])
test_dataset = CelebA(args.root_dir,
args.img_dir,
args.ann_dir,
transform=transform,
train=False)
testloader = DataLoader(test_dataset,
batch_size=args.show_size,
shuffle=True,
collate_fn=collate_fn,
drop_last=True)
for i in testloader:
sample = i
break
im = sample['image']
grid = vutils.make_grid(im, normalize=True)
for i in range(100):
if not os.path.exists(os.path.join(args.save_path, str(i))):
def main():
parser = argparse.ArgumentParser(description='')
parser.add_argument('--gpu',
'-g',
type=int,
default=0,
help='GPU device ID')
parser.add_argument('--epoch',
'-e',
type=int,
default=300,
help='# of epoch')
parser.add_argument('--batch_size',
'-b',
type=int,
default=100,
help='learning minibatch size')
parser.add_argument('--g_hidden', type=int, default=128)
parser.add_argument('--g_arch', type=int, default=1)
parser.add_argument('--g_activate', type=str, default='sigmoid')
parser.add_argument('--g_channel', type=int, default=512)
parser.add_argument('--C', type=float, default=1)
parser.add_argument('--d_arch', type=int, default=1)
parser.add_argument('--d_iters', type=int, default=5)
parser.add_argument('--d_clip', type=float, default=0.01)
parser.add_argument('--d_channel', type=int, default=512)
parser.add_argument('--initial_iter', type=int, default=10)
parser.add_argument('--resume', default='')
parser.add_argument('--out', default='')
# args = parser.parse_args()
args, unknown = parser.parse_known_args()
# log directory
out = datetime.datetime.now().strftime('%m%d%H%M')
if args.out:
out = out + '_' + args.out
out_dir = os.path.abspath(os.path.join(os.path.curdir, "runs", out))
os.makedirs(os.path.join(out_dir, 'models'), exist_ok=True)
os.makedirs(os.path.join(out_dir, 'visualize'), exist_ok=True)
# hyper parameter
with open(os.path.join(out_dir, 'setting.txt'), 'w') as f:
for k, v in args._get_kwargs():
print('{} = {}'.format(k, v))
f.write('{} = {}\n'.format(k, v))
# tensorboard
if use_tensorboard:
sess = tf.Session()
sess.run(tf.initialize_all_variables())
summary_dir = os.path.join(out_dir, "summaries")
loss_ = tf.placeholder(tf.float32)
gen_loss_summary = tf.scalar_summary('gen_loss', loss_)
dis_loss_summary = tf.scalar_summary('dis_loss', loss_)
enc_loss_summary = tf.scalar_summary('enc_loss', loss_)
rec_loss_summary = tf.scalar_summary('rec_loss', loss_)
summary_writer = tf.train.SummaryWriter(summary_dir, sess.graph)
# load celebA
dataset = CelebA(image_type=args.g_activate)
train_iter = chainer.iterators.MultiprocessIterator(
dataset, args.batch_size)
gen = vaegan.Generator(n_hidden=args.g_hidden,
activate=args.g_activate,
ch=args.g_channel)
dis = vaegan.Discriminator(ch=args.d_channel)
enc = vaegan.Encoder(n_hidden=args.g_hidden)
if args.gpu >= 0:
cuda.get_device(args.gpu).use()
enc.to_gpu()
gen.to_gpu()
dis.to_gpu()
optimizer_enc = chainer.optimizers.Adam(alpha=0.0001, beta1=0.5)
optimizer_gen = chainer.optimizers.Adam(alpha=0.0001, beta1=0.5)
optimizer_dis = chainer.optimizers.Adam(alpha=0.0001, beta1=0.5)
optimizer_enc.setup(enc)
optimizer_gen.setup(gen)
optimizer_dis.setup(dis)
optimizer_enc.add_hook(chainer.optimizer.WeightDecay(0.00001))
optimizer_gen.add_hook(chainer.optimizer.WeightDecay(0.00001))
optimizer_dis.add_hook(chainer.optimizer.WeightDecay(0.00001))
if args.init_epoch is not None:
serializers.load_hdf5(args.input + '.enc.model', enc)
serializers.load_hdf5(args.input + '.enc.state', optimizer_enc)
serializers.load_hdf5(args.input + '.gen.model', gen)
serializers.load_hdf5(args.input + '.gen.state', optimizer_gen)
serializers.load_hdf5(args.input + '.dis.model', dis)
serializers.load_hdf5(args.input + '.dis.state', optimizer_dis)
start_time = time.time()
train_count = 0
C = 1
for epoch in range(1, args.epoch + 1):
print('Epoch {}'.format(epoch))
sum_L_gen = []
sum_L_dis = []
sum_L_enc = []
sum_L_rec = []
loop = 1000
for i in range(loop):
batch = train_iter.next()
x = chainer.Variable(
gen.xp.asarray([b[0] for b in batch], 'float32'))
# attr = chainer.Variable(gen.xp.asarray([b[1] for b in batch], 'int32'))
# real image
y_real, l2_real, l3_real = dis(x)
L_dis_real = F.softmax_cross_entropy(
y_real,
chainer.Variable(
gen.xp.zeros(args.batch_size).astype(np.int32)))
# fake image from random noize
z = chainer.Variable(
gen.xp.asarray(gen.make_hidden_normal(args.batch_size)))
x_fake = gen(z)
y_fake, _, _ = dis(x_fake)
L_gen_fake = F.softmax_cross_entropy(
y_fake,
chainer.Variable(
gen.xp.zeros(args.batch_size).astype(np.int32)))
L_dis_fake = F.softmax_cross_entropy(
y_fake,
chainer.Variable(
gen.xp.ones(args.batch_size).astype(np.int32)))
# fake image from reconstruction
mu_z, ln_var_z = enc(x)
z_rec = F.gaussian(mu_z, ln_var_z)
x_rec = gen(z_rec)
y_rec, l2_rec, l3_rec = dis(x_rec)
L_prior = F.gaussian_kl_divergence(mu_z,
ln_var_z) / args.batch_size
L_gen_rec = F.softmax_cross_entropy(
y_rec,
chainer.Variable(
gen.xp.zeros(args.batch_size).astype(np.int32)))
L_dis_rec = F.softmax_cross_entropy(
y_rec,
chainer.Variable(
gen.xp.ones(args.batch_size).astype(np.int32)))
L_rec = F.mean_squared_error(
l2_real,
l2_rec) * l2_real.data.shape[2] * l2_real.data.shape[3]
# L_rec = F.gaussian_nll(l0, l2, chainer.Variable(xp.zeros(l0.data.shape).astype('float32'))) / args.batch_size
# calc loss
L_dis = L_dis_real + 0.5 * L_dis_fake + 0.5 * L_dis_rec
L_enc = L_prior + L_rec
L_gen = L_gen_fake + L_gen_rec + args.C * L_rec
# update
optimizer_enc.target.cleargrads()
L_enc.backward()
optimizer_enc.update()
optimizer_gen.target.cleargrads()
L_gen.backward()
optimizer_gen.update()
optimizer_dis.target.cleargrads()
L_dis.backward()
optimizer_dis.update()
train_count += 1
l_dis = float(L_dis.data)
l_gen = float(L_gen.data)
l_enc = float(L_enc.data)
l_rec = float(L_rec.data)
sum_L_dis.append(l_dis)
sum_L_gen.append(l_gen)
sum_L_enc.append(l_enc)
sum_L_rec.append(l_rec)
progress_report(train_count, start_time, args.batch_size, l_dis)
if use_tensorboard:
summary = sess.run(gen_loss_summary, feed_dict={loss_: l_gen})
summary_writer.add_summary(summary, train_count)
summary = sess.run(dis_loss_summary, feed_dict={loss_: l_dis})
summary_writer.add_summary(summary, train_count)
summary = sess.run(enc_loss_summary, feed_dict={loss_: l_enc})
summary_writer.add_summary(summary, train_count)
summary = sess.run(rec_loss_summary, feed_dict={loss_: l_rec})
summary_writer.add_summary(summary, train_count)
log = 'gen loss={:.5f}, dis loss={:.5f} enc loss={:.5f} rec loss={:.5f}' \
.format(np.mean(sum_L_gen), np.mean(sum_L_dis), np.mean(sum_L_enc), np.mean(sum_L_rec))
print('\n' + log)
with open(os.path.join(out_dir, "log"), 'a+') as f:
f.write(log + '\n')
if epoch % 5 == 0:
serializers.save_hdf5(
os.path.join(out_dir, "models",
"{:03d}.dis.model".format(epoch)), dis)
serializers.save_hdf5(
os.path.join(out_dir, "models",
"{:03d}.gen.model".format(epoch)), gen)
serializers.save_hdf5(
os.path.join(out_dir, "models",
"{:03d}.enc.model".format(epoch)), enc)
visualize(gen,
enc,
train_iter,
epoch=epoch,
savedir=os.path.join(out_dir, 'visualize'),
image_type=args.g_activate)
args = parser.parse_args()
c_dims = len(args.selected_attrs)
num_epochs = args.epochs
lamb_cls = args.lam_cls
lamb_rec = 10
transform = transforms.Compose([
transforms.RandomHorizontalFlip(p=0.5),
transforms.CenterCrop(178),
transforms.Resize(size=64),
transforms.ToTensor(),
transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5))
])
dataset = CelebA(root=args.directory,
attributes=args.selected_attrs,
transform=transform,
download=args.download)
data_loader = loader.DataLoader(dataset, batch_size=args.batch_size)
def fakeLabels(lth):
"""
lth (int): no of labels required
"""
label = torch.tensor([])
for i in range(lth):
arr = np.zeros(c_dims)
arr[0] = 1
np.random.shuffle(arr)
label = torch.cat((label, torch.tensor(arr).float().unsqueeze(0)),
from matplotlib import pyplot as plt
import cv2
def test_instance(db=None):
instance_idx = 39
image, label, (bbox_tl_x, bbox_tl_y, bbox_br_x,
bbox_br_y) = db[instance_idx]
print('Instance Index: {}'.format(instance_idx))
print('Label: {}'.format(label))
print('Image Shape (Width × Height): ({} × {})'.format(
image.shape[1], image.shape[0]))
print('Facial Shape (Width × Height): ({} × {})'.format(
bbox_br_x - bbox_tl_x, bbox_br_y - bbox_tl_y))
print('Facial Area: {}'.format(
(bbox_br_x - bbox_tl_x) * (bbox_br_y - bbox_tl_y)))
plt.figure(num='Dataset Tester', figsize=(10, 10))
plt.title('Identity: {}'.format(label))
image = cv2.rectangle(image, (int(bbox_tl_x), int(bbox_tl_y)),
(int(bbox_br_x), int(bbox_br_y)),
color=(1, 0, 0),
thickness=2)
plt.imshow(image, cmap='gray')
plt.show()
db = CelebA(dataset_type=CelebA.VALIDATION)
# db.shuffle()
test_instance(db)
def train(args):
device = torch.device('cuda' if torch.cuda.is_available() and args.enable_cuda else 'cpu')
# transforms applied
transform = transforms.Compose([
transforms.Resize((args.image_size, args.image_size)),
transforms.ToTensor(),
transforms.Normalize(mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5))
])
if args.dataset == 'celeba':
img_dir = 'cropped'
ann_dir = 'list_attr_celeba.csv'
train_dataset = CelebA(args.root_dir, img_dir, ann_dir, transform=transform, train=True)
test_dataset = CelebA(args.root_dir, img_dir, ann_dir, transform=transform, train=False)
attnames = list(train_dataset.df.columns)[1:]
elif args.dataset == 'sunattributes':
img_dir = 'cropped'
ann_dir = 'SUNAttributeDB'
train_dataset = SUN_Attributes(args.root_dir, img_dir, ann_dir, transform=transform, train=True)
test_dataset = SUN_Attributes(args.root_dir, img_dir, ann_dir, transform=transform, train=False)
attnames = train_dataset.attrnames
else:
raise NotImplementedError()
fsize = train_dataset.feature_size
trainloader = DataLoader(train_dataset, batch_size=args.batch_size, shuffle=True, collate_fn=collate_fn, drop_last=True)
testloader = DataLoader(test_dataset, batch_size=args.show_size, shuffle=True, collate_fn=collate_fn, drop_last=True)
'''
dataloader returns dictionaries.
sample : {'image' : (bs, 64, 64, 3), 'attributes' : (bs, att_size)}
'''
# model, optimizer, criterion
if args.residual:
gen = Generator_Res(in_c = args.nz + fsize)
dis = Discriminator_Res(ny=fsize)
else:
gen = Generator(in_c = args.nz + fsize)
dis = Discriminator(ny=fsize)
MODELPATH = '../model/celeba/res_False/gen_epoch_{}.ckpt'.format(args.model_ep)
gen.load_state_dict(torch.load(MODELPATH))
enc_y = Encoder(fsize).to(device)
MODELPATH = '../model/celeba/res_False/enc_y_epoch_{}.ckpt'.format(args.enc_ep)
enc_y.load_state_dict(torch.load(MODELPATH))
enc_z = Encoder(args.nz, for_y=False).to(device)
MODELPATH = '../model/celeba/res_False/enc_y_epoch_{}.ckpt'.format(args.enc_ep)
enc_z.load_state_dict(torch.load(MODELPATH))
gen.eval()
enc_y.eval()
enc_z.eval()
model = AttrEncoder(outdims=fsize).to(device)
# initialize weights for encoders
att_optim = optim.Adam(model.parameters(), lr=args.learning_rate, betas=args.betas)
criterion = nn.BCELoss().to(device)
noise = torch.randn((args.batch_size, args.nz)).to(device)
if args.use_tensorboard:
writer.add_text("Text", "begin training, lr={}".format(args.learning_rate))
print("begin training, lr={}".format(args.learning_rate), flush=True)
stepcnt = 0
for ep in range(args.num_epoch):
for it, sample in enumerate(trainloader):
elapsed = time.time()
image = sample['image'].to(device)
att = sample['attributes'].to(device)
out = model(image)
loss = criterion(out, att)
z = enc_z(image)
y = enc_y(image)
out2 = gen(z, y)
loss2 = criterion(out2, att)
loss.backward()
loss2.backward()
att_optim.step()
if it % args.log_every == (args.log_every - 1):
if args.use_tensorboard:
writer.add_scalar('loss', loss, it+1)
print("{}th iter \t loss: {:.8f} \t time per iter: {:.05f}s".format(it+1, loss.detach().cpu(), (time.time() - elapsed) / args.log_every), flush=True)
cnt, allcnt = eval(model, testloader, device)
print("-" * 50)
print("epoch {} done. accuracy: {:.03f}%. num guessed: [{:05d}/{:05d}]".format(ep+1, cnt / allcnt * 100, cnt, allcnt))
print("-" * 50, flush=True)
if ep % args.save_every == (args.save_every - 1):
torch.save(model.state_dict(), "../model/atteval_epoch_{}.model".format(ep+1))
cnt, allcnt = eval(model, testloader, device, early=False)
print("-" * 50)
print("training done. final accuracy: {:.03f}% num guessed: [{:07d}/{:07d}]".format(ep+1, cnt / allcnt * 100, cnt, allcnt))
print("-" * 50, flush=True)
def test_celeba(self):
dataset = CelebA(root='/Data/CelebA')
def train(args):
print(args)
if args.use_tensorboard:
log_name = "{}_im{}_lr{}_bs{}_nz{}_aux".format(args.dataset, args.image_size, args.learning_rate, args.batch_size, args.nz)
print("logging to runs/{}".format(log_name))
writer = SummaryWriter(log_dir=os.path.join('runs', log_name))
device = torch.device('cuda' if torch.cuda.is_available() and args.enable_cuda else 'cpu')
# transforms applied
transform = transforms.Compose([
transforms.Resize((args.image_size, args.image_size)),
transforms.ColorJitter(brightness=0.1, contrast=0.1, saturation=0.1),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
transforms.Normalize(mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5))
])
# dataset and dataloader for training
if args.dataset == 'celeba':
img_dir = 'img_align_celeba'
ann_dir = 'list_attr_celeba.csv'
train_dataset = CelebA(args.root_dir, img_dir, ann_dir, transform=transform)
attnames = list(train_dataset.df.columns)[1:]
elif args.dataset == 'sunattributes':
img_dir = 'images'
ann_dir = 'SUNAttributeDB'
train_dataset = SUN_Attributes(args.root_dir, img_dir, ann_dir, transform=transform)
attnames = train_dataset.attrnames
else:
raise NotImplementedError()
fsize = train_dataset.feature_size
trainloader = DataLoader(train_dataset, batch_size=args.batch_size, shuffle=True, collate_fn=collate_fn, drop_last=True, num_workers=8)
'''
dataloader returns dictionaries.
sample : {'image' : (bs, H, W, 3), 'attributes' : (bs, fsize)}
'''
# model, optimizer, criterion
gen = Generator(in_c = args.nz + fsize)
dis = Discriminator_Aux(ny=fsize)
gen_params = 0
dis_params = 0
for params in list(gen.parameters())[::2]:
gen_params += params.numel()
for params in list(dis.parameters())[::2]:
dis_params += params.numel()
print("# of parameters in generator : {}".format(gen_params))
print("# of parameters in discriminator : {}".format(dis_params))
gen = gen.to(device)
dis = dis.to(device)
# initialize weights for conv layers
gen.apply(init_weights)
dis.apply(init_weights)
if args.opt_method == 'Adam':
gen_optim = optim.Adam(gen.parameters(), lr=args.learning_rate, betas=args.betas)
dis_optim = optim.Adam(dis.parameters(), lr=args.learning_rate, betas=args.betas)
if args.opt_method == 'SGD':
gen_optim = optim.SGD(gen.parameters(), lr=args.learning_rate, momentum=args.momentum)
dis_optim = optim.SGD(dis.parameters(), lr=args.learning_rate, momentum=args.momentum)
gen_scheduler = optim.lr_scheduler.ReduceLROnPlateau(gen_optim, patience=args.patience)
dis_scheduler = optim.lr_scheduler.ReduceLROnPlateau(dis_optim, patience=args.patience)
criterion = nn.BCELoss()
fixed_noise = torch.randn(args.show_size, args.nz).to(device)
# fixed_label = torch.zeros(args.show_size, fsize).to(device)
fixed_label = randomsample(train_dataset, args.show_size).to(device)
label = torch.empty(args.batch_size).to(device)
noise = torch.empty(args.batch_size, args.nz).to(device)
if not os.path.exists(args.model_path):
os.mkdir(args.model_path)
if not os.path.exists(args.output_path):
os.mkdir(args.output_path)
if args.use_tensorboard:
writer.add_text("Text", "begin training, lr={}".format(args.learning_rate))
print("begin training, lr={}".format(args.learning_rate), flush=True)
stepcnt = 0
gen.train()
dis.train()
real_tar = 0.9
fake_tar = 0.1
for ep in range(args.num_epoch):
Dloss = 0
Gloss = 0
Closs = 0
for it, sample in enumerate(trainloader):
elapsed = time.time()
x = sample['image'].to(device)
y = sample['attributes'].to(device)
'''training of Discriminator'''
# train on real images and real attributes, target are ones (real)
dis.zero_grad()
real_label = torch.full_like(label, real_tar)
x_real = x.clone().detach()
y_real = y.clone().detach()
out, y = dis(x_real)
# print(out.size(), real_label.size())
real_dis_loss = 0.5 * criterion(out, real_label)
real_cls_loss = 0.5 * criterion(y, y_real)
err = real_dis_loss + args.lambda_c * real_cls_loss
err.backward()
D_x = out.mean().cpu().item()
cls1 = real_cls_loss.cpu().item()
# train on fake images and real attributes, target are zeros (fake)
fake_label = torch.full_like(label, fake_tar)
z = torch.randn_like(noise)
y_real = y.clone().detach()
x_fake = gen(z, y_real)
out, y = dis(x_fake)
fake_dis_loss = 0.5 * criterion(out, fake_label)
fake_cls_loss = 0.5 * criterion(y, y_real)
err = fake_dis_loss + args.lambda_c * fake_cls_loss
err.backward()
D_G_z1 = out.mean().cpu().item()
cls2 = real_cls_loss.cpu().item()
dis_optim.step()
errD = real_dis_loss + fake_dis_loss
errD_C = cls1 + cls2
'''training of Generator'''
# train on fake images and real attributes, target are ones (real)
gen.zero_grad()
y_real = randomsample(train_dataset, args.batch_size).to(device)
z = torch.randn_like(noise)
x_prime = gen(z, y_real)
out, y = dis(x_prime)
real_label = torch.full_like(label, real_tar)
gen_loss = criterion(out, real_label)
gen_cls_loss = criterion(y, y_real)
err = gen_loss + args.lambda_c * gen_cls_loss
err.backward()
D_G_z2 = out.mean().cpu().item()
gen_optim.step()
errG = gen_loss.cpu().item()
errG_C = gen_cls_loss.cpu().item()
dloss = errD
gloss = errG
closs = errD_C + errG_C
Dloss += dloss
Gloss += gloss
Closs += closs
'''log the losses and images, get time of loop'''
if it % args.log_every == (args.log_every - 1):
if args.use_tensorboard:
writer.add_scalar("D_x", D_x, stepcnt)
writer.add_scalar("D_G_z1", D_G_z1, stepcnt)
writer.add_scalar("D_G_z2", D_G_z2, stepcnt)
writer.add_scalar("D_loss", dloss, stepcnt)
writer.add_scalar("G_loss", gloss, stepcnt)
writer.add_scalar("C_loss", closs, stepcnt)
after = time.time()
print("{}th iter\tD(x, y): {:.4f}\tD(G(z, y))_1: {:.4f}\tD(G(z, y))_2: {:.4f}\tcls_loss: {:.4f}\t{:.4f}s per loop".format(it+1, D_x, D_G_z1, D_G_z2, closs, (after-elapsed) / args.log_every), flush=True)
if it % args.image_every == (args.image_every - 1):
im = gen(fixed_noise, fixed_label)
grid = vutils.make_grid(im, normalize=True)
if args.use_tensorboard:
writer.add_image('iter {}'.format(it+1), grid, stepcnt+1)
print("logged image, iter {}".format(it+1))
stepcnt += 1
# learning rate scheduler
if args.opt_method is 'SGD':
gen_scheduler.step(g_loss)
dis_scheduler.step(d_loss)
'''log losses per epoch'''
print("epoch [{}/{}] done | Disc loss: {:.6f}\tGen loss: {:.6f}\tClassification loss: {:.6f}".format(ep+1, args.num_epoch, Dloss, Gloss, Closs), flush=True)
if args.use_tensorboard:
writer.add_text("epoch loss", "epoch [{}/{}] done | Disc loss: {:.6f}\tGen loss: {:.6f}\tClassification loss: {:.6f}".format(ep+1, args.num_epoch, Dloss, Gloss, Closs), ep+1)
'''save models and generated images on fixed labels'''
if ep % args.save_model_every == (args.save_model_every - 1):
savedir = os.path.join(args.model_path, "{}/aux/".format(args.dataset))
if not os.path.exists(savedir):
os.makedirs(savedir, exist_ok=True)
gen_pth = "gen_epoch_{}.model".format(ep+1)
dis_pth = "dis_epoch_{}.model".format(ep+1)
torch.save(gen.state_dict(), os.path.join(savedir, gen_pth))
torch.save(dis.state_dict(), os.path.join(savedir, dis_pth))
print("saved model to {}".format(savedir))
'''save and add images based on fixed noise and labels'''
imdir = os.path.join(args.output_path, "{}/aux/cgan_epoch_{}".format(args.dataset, ep+1))
if not os.path.exists(imdir):
os.makedirs(imdir, exist_ok=True)
img = gen(fixed_noise, fixed_label).detach().cpu()
grid = vutils.make_grid(img, normalize=True)
if args.use_tensorboard:
writer.add_image('epoch {}'.format(ep+1), grid, ep+1)
vutils.save_image(grid, os.path.join(imdir, "original.png"))
'''save images based on fixed noise and labels, make attribute 1'''
for i in range(fsize):
att = fixed_label
att[:, i] = 1
img = gen(fixed_noise, att).detach().cpu()
grid = vutils.make_grid(img, normalize=True)
vutils.save_image(grid, os.path.join(imdir, "{}.png".format(attnames[i].replace("/", ""))))
print("saved original and transformed images in {}".format(imdir), flush=True)
print("end training")
if args.use_tensorboard:
writer.add_text("Text", "end training")
writer.close()
def train(args):
device = torch.device('cuda:1' if torch.cuda.is_available() else 'cpu')
transform = transforms.Compose(
[transforms.Resize((224, 224)),
transforms.ToTensor()])
# dataset and dataloader for training
# train_dataset = DeepFashion(args.root_dir, args.img_dir, args.ann_dir, transform=transform)
train_dataset = CelebA(args.root_dir,
args.img_dir,
args.ann_dir,
transform=transform)
# test_dataset = DeepFashion(args.root_dir, args.img_dir, args.ann_dir, mode='Val', transform=transform)
test_dataset = CelebA(args.root_dir,
args.img_dir,
args.ann_dir,
mode='Val',
transform=transform)
# trainloader = DataLoader(train_dataset, batch_size=args.batch_size, shuffle=True, collate_fn=collate_fn)
trainloader = DataLoader(train_dataset,
batch_size=args.batch_size,
shuffle=True,
collate_fn=collate_fn)
# testloader = DataLoader(test_dataset, batch_size=args.batch_size, shuffle=True, collate_fn=collate_fn)
testloader = DataLoader(test_dataset,
batch_size=args.batch_size,
shuffle=True,
collate_fn=collate_fn)
# model, optimizer, criterion
model = AttrEncoder(outdims=args.attrnum).to(device)
optimizer = optim.Adam(model.parameters(), lr=args.learning_rate)
criterion = nn.BCELoss().to(device)
print("begin training", flush=True)
for ep in range(args.num_epoch):
model.train()
for it, sample in enumerate(trainloader):
im = sample['image'].to(device)
t = sample['attributes'].to(device)
optimizer.zero_grad()
out = model.forward(im)
loss = criterion(out, t)
loss.backward()
optimizer.step()
if it % 10 == 9:
print("{}th iter \t loss: {}".format(it + 1, loss), flush=True)
cnt, allcnt = eval(model, testloader, device)
print("-" * 30)
print("epoch [{}/{}] done | accuracy [{}/{}]".format(
ep, args.num_epoch, cnt, allcnt))
print("-" * 30, flush=True)
torch.save(model.state_dict(), "../out/epoch_{:1d}.model".format(ep))
print("end training")
if __name__ == '__main__':
# this enables a Ctrl-C without triggering errors
signal.signal(signal.SIGINT, lambda x, y: sys.exit(0))
print("hello")
# parse arguments
#args = parse_args()
args = "profile/celeba.json"
# initialize logging
util.init_output_logging()
# load hyper-parameters
# hps = util.load_profile(args.profile)
hps = util.load_profile(args)
util.manual_seed(hps.ablation.seed)
# build graph
builder = Builder(hps)
state = builder.build()
# load dataset
dataset = CelebA(root=hps.dataset.root,
transform=transforms.Compose((
transforms.CenterCrop(160),
transforms.Resize(64),
transforms.ToTensor()
)))
# start training
trainer = Trainer(hps=hps, dataset=dataset, **state)
trainer.train()
def train(args):
if args.use_tensorboard:
log_name = "enc_lr{}".format(args.learning_rate)
writer = SummaryWriter(log_dir=os.path.join('runs', log_name))
device = torch.device('cuda' if args.enable_cuda and torch.cuda.is_available() else 'cpu')
# transforms applied
transform = transforms.Compose([
transforms.Resize((args.image_size, args.image_size)),
transforms.ColorJitter(brightness=0.1, contrast=0.1, saturation=0.1),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
transforms.Normalize(mean=(0.5, 0.5, 0.5), std=(0.5, 0.5, 0.5))
])
# dataset and dataloader for training
train_dataset = CelebA(args.root_dir, args.img_dir, args.ann_dir, transform=transform)
test_dataset = CelebA(args.root_dir, args.img_dir, args.ann_dir, transform=transform, train=False)
fsize = train_dataset.feature_size
trainloader = DataLoader(train_dataset, batch_size=args.batch_size, shuffle=True, collate_fn=collate_fn, drop_last=True, num_workers=4)
testloader = DataLoader(test_dataset, batch_size=args.show_size, shuffle=True, collate_fn=collate_fn, drop_last=True, num_workers=4)
'''
dataloader returns dictionaries.
sample : {'image' : (bs, 64, 64, 3), 'attributes' : (bs, att_size)}
'''
attnames = list(train_dataset.df.columns)[1:]
# model, optimizer, criterion
gen = Generator(in_c = args.nz + fsize)
gen = gen.to(device)
modeldir = os.path.join(args.model_path, "{}/res_{}".format(args.dataset, args.residual))
MODELPATH = os.path.join(modeldir, 'gen_epoch_{}.ckpt'.format(args.model_ep))
gen.load_state_dict(torch.load(MODELPATH))
enc_y = Encoder(fsize).to(device)
enc_z = Encoder(args.nz, for_y=False).to(device)
"""
attr = AttrEncoder().to(device)
ATTRPATH = os.path.join(args.model_path, "atteval_epoch_{}.ckpt".format(args.attr_epoch))
attr.load_state_dict(torch.load(ATTRPATH))
attr.eval()
"""
# initialize weights for encoders
enc_y.apply(init_weights)
enc_z.apply(init_weights)
if args.opt_method == 'Adam':
enc_y_optim = optim.Adam(enc_y.parameters(), lr=args.learning_rate, betas=args.betas)
enc_z_optim = optim.Adam(enc_z.parameters(), lr=args.learning_rate, betas=args.betas)
if args.opt_method == 'SGD':
enc_y_optim = optim.SGD(enc_y.parameters(), lr=args.learning_rate, momentum=args.momentum)
enc_z_optim = optim.SGD(enc_z.parameters(), lr=args.learning_rate, momentum=args.momentum)
enc_y_scheduler = optim.lr_scheduler.ReduceLROnPlateau(enc_y_optim, patience=args.patience)
enc_z_scheduler = optim.lr_scheduler.ReduceLROnPlateau(enc_z_optim, patience=args.patience)
criterion = nn.MSELoss()
noise = torch.randn((args.batch_size, args.nz)).to(device)
if args.use_tensorboard:
writer.add_text("Text", "begin training, lr={}".format(args.learning_rate))
print("begin training, lr={}".format(args.learning_rate), flush=True)
stepcnt = 0
gen.eval()
enc_y.train()
enc_z.train()
for ep in range(args.num_epoch):
YLoss = 0
ZLoss = 0
ittime = time.time()
run_time = 0
run_ittime = 0
for it, sample in enumerate(trainloader):
elapsed = time.time()
x = sample['image'].to(device)
y = sample['attributes'].to(device)
'''training of attribute encoder'''
# train on real images, target are real attributes
enc_y.zero_grad()
out = enc_y(x)
l2loss = criterion(out, y)
l2loss.backward()
enc_y_optim.step()
loss_y = l2loss.detach().cpu().item()
'''training of identity encoder'''
# train on fake images generated with real labels, target are original identities
enc_z.zero_grad()
y_sample = randomsample(train_dataset, args.batch_size).to(device)
with torch.no_grad():
x_fake = gen(noise, y_sample)
z_recon = enc_z(x_fake)
l2loss2 = criterion(z_recon, noise)
l2loss2.backward()
enc_z_optim.step()
loss_z = l2loss2.detach().cpu().item()
YLoss += loss_y
ZLoss += loss_z
ittime_a = time.time() - ittime
run_time += time.time() - elapsed
run_ittime += ittime_a
'''log the losses and images, get time of loop'''
if it % args.log_every == (args.log_every - 1):
if args.use_tensorboard:
writer.add_scalar('y loss', loss_y, stepcnt+1)
writer.add_scalar('z loss', loss_z, stepcnt+1)
after = time.time()
print("{}th iter\ty loss: {:.5f}\tz loss: {:.5f}\t{:.4f}s per step, {:.4f}s per iter".format(it+1, loss_y, loss_z, run_time / args.log_every, run_ittime / args.log_every), flush=True)
run_time = 0
run_ittime = 0
ittime = time.time()
stepcnt += 1
print("epoch [{}/{}] done | y loss: {:.6f} \t z loss: {:.6f}]".format(ep+1, args.num_epoch, YLoss, ZLoss), flush=True)
if args.use_tensorboard:
writer.add_text("epoch loss", "epoch [{}/{}] done | y loss: {:.6f} \t z loss: {:.6f}]".format(ep+1, args.num_epoch, YLoss, ZLoss), ep+1)
savepath = os.path.join(args.model_path, "{}/res_{}".format(args.dataset, args.residual))
try:
torch.save(enc_y.state_dict(), os.path.join(savepath, "enc_y_epoch_{}.ckpt".format(ep+1)))
torch.save(enc_z.state_dict(), os.path.join(savepath, "enc_z_epoch_{}.ckpt".format(ep+1)))
print("saved encoder model at {}".format(savepath))
except OSError:
print("failed to save model for epoch {}".format(ep+1))
if ep % args.recon_every == (args.recon_every - 1):
# reconstruction and attribute transfer of images
outpath = os.path.join(args.output_path, "{}/res_{}".format(args.dataset, args.residual))
SAVEPATH = os.path.join(outpath, 'enc_epoch_{}'.format(ep+1))
if not os.path.exists(SAVEPATH):
os.mkdir(SAVEPATH)
with torch.no_grad():
for sample in testloader:
im = sample['image']
grid = vutils.make_grid(im, normalize=True)
vutils.save_image(grid, os.path.join(SAVEPATH, 'original.png'))
im = im.to(device)
y = enc_y(im)
z = enc_z(im)
im = gen(z, y)
"""
y_h = attr(im)
"""
recon = im.cpu()
grid = vutils.make_grid(recon, normalize=True)
vutils.save_image(grid, os.path.join(SAVEPATH, 'recon.png'))
break
"""
CNT = 0
ALLCNT = 0
for idx in range(fsize):
fname = attnames[idx]
y_p_h = y_h.clone()
for i in range(args.show_size):
y_p_h[i, idx] = 0 if y_p_h[i, idx] == 1 else 1
out = gen(z, y_p_h)
trans = out.cpu()
grid2 = vutils.make_grid(trans, normalize=True)
vutils.save_image(grid2, os.path.join(SAVEPATH, '{}.png'.format(fname)))
cnt, allcnt = eval_im(attr, out, y_p_h)
CNT += cnt
ALLCNT += allcnt
break
print("epoch {} for encoder, acc: {:.03}%".format(ep+1, CNT / ALLCNT * 100), flush=True)
"""
print("end training")
if args.use_tensorboard:
writer.add_text("Text", "end training")
writer.close()
