def init_model(ixtoword):
if cfg.CAP.USE_ORIGINAL:
caption_cnn = CAPTION_CNN(embed_size=cfg.CAP.EMBED_SIZE)
caption_rnn = CAPTION_RNN(embed_size=cfg.CAP.EMBED_SIZE,
hidden_size=cfg.CAP.HIDDEN_SIZE,
vocab_size=len(ixtoword),
num_layers=cfg.CAP.NUM_LAYERS)
else:
caption_cnn = Encoder()
caption_rnn = Decoder(idx2word=ixtoword)
decoder_optimizer = torch.optim.Adam(params=caption_rnn.parameters(),
lr=cfg.CAP.LEARNING_RATE)
if cfg.CAP.CAPTION_CNN_PATH and cfg.CAP.CAPTION_RNN_PATH:
print('Pre-Trained Caption Model')
caption_cnn_checkpoint = torch.load(
cfg.CAP.CAPTION_CNN_PATH,
map_location=lambda storage, loc: storage)
caption_rnn_checkpoint = torch.load(
cfg.CAP.CAPTION_RNN_PATH,
map_location=lambda storage, loc: storage)
caption_cnn.load_state_dict(caption_cnn_checkpoint['model_state_dict'])
caption_rnn.load_state_dict(caption_rnn_checkpoint['model_state_dict'])
decoder_optimizer.load_state_dict(
caption_rnn_checkpoint['optimizer_state_dict'])
caption_cnn = caption_cnn.to(cfg.DEVICE)
caption_rnn = caption_rnn.to(cfg.DEVICE)
decoder_optimizer = decoder_optimizer
return caption_cnn, caption_rnn, decoder_optimizer
def build_models(self):
# text encoders
if cfg.TRAIN.NET_E == '':
print('Error: no pretrained text-image encoders')
return
image_encoder = CNN_ENCODER(cfg.TEXT.EMBEDDING_DIM)
img_encoder_path = cfg.TRAIN.NET_E.replace('text_encoder', 'image_encoder')
state_dict = \
torch.load(img_encoder_path, map_location=lambda storage, loc: storage)
image_encoder.load_state_dict(state_dict)
for p in image_encoder.parameters():
p.requires_grad = False
print('Load image encoder from:', img_encoder_path)
image_encoder.eval()
# self.n_words = 156
text_encoder = RNN_ENCODER(self.n_words, nhidden=cfg.TEXT.EMBEDDING_DIM)
state_dict = torch.load(cfg.TRAIN.NET_E, map_location=lambda storage, loc: storage)
text_encoder.load_state_dict(state_dict)
for p in text_encoder.parameters():
p.requires_grad = False
print('Load text encoder from:', cfg.TRAIN.NET_E)
text_encoder.eval()
# Caption models - cnn_encoder and rnn_decoder
caption_cnn = CAPTION_CNN(cfg.CAP.embed_size)
caption_cnn.load_state_dict(torch.load(cfg.CAP.caption_cnn_path, map_location=lambda storage, loc: storage))
for p in caption_cnn.parameters():
p.requires_grad = False
print('Load caption model from:', cfg.CAP.caption_cnn_path)
caption_cnn.eval()
# self.n_words = 9
caption_rnn = CAPTION_RNN(cfg.CAP.embed_size, cfg.CAP.hidden_size * 2, self.n_words, cfg.CAP.num_layers)
# caption_rnn = CAPTION_RNN(cfg.CAP.embed_size, cfg.CAP.hidden_size * 2, self.n_words, cfg.CAP.num_layers)
caption_rnn.load_state_dict(torch.load(cfg.CAP.caption_rnn_path, map_location=lambda storage, loc: storage))
for p in caption_rnn.parameters():
p.requires_grad = False
print('Load caption model from:', cfg.CAP.caption_rnn_path)
# Generator and Discriminator:
netsD = []
if cfg.GAN.B_DCGAN:
if cfg.TREE.BRANCH_NUM == 1:
from model import D_NET64 as D_NET
elif cfg.TREE.BRANCH_NUM == 2:
from model import D_NET128 as D_NET
else: # cfg.TREE.BRANCH_NUM == 3:
from model import D_NET256 as D_NET
netG = G_DCGAN()
netsD = [D_NET(b_jcu=False)]
else:
from model import D_NET64, D_NET128, D_NET256
netG = G_NET()
if cfg.TREE.BRANCH_NUM > 0:
netsD.append(D_NET64())
if cfg.TREE.BRANCH_NUM > 1:
netsD.append(D_NET128())
if cfg.TREE.BRANCH_NUM > 2:
netsD.append(D_NET256())
netG.apply(weights_init)
# print(netG)
for i in range(len(netsD)):
netsD[i].apply(weights_init)
# print(netsD[i])
print('# of netsD', len(netsD))
epoch = 0
if cfg.TRAIN.NET_G != '':
state_dict = \
torch.load(cfg.TRAIN.NET_G, map_location=lambda storage, loc: storage)
netG.load_state_dict(state_dict)
print('Load G from: ', cfg.TRAIN.NET_G)
istart = cfg.TRAIN.NET_G.rfind('_') + 1
iend = cfg.TRAIN.NET_G.rfind('.')
epoch = cfg.TRAIN.NET_G[istart:iend]
# print(epoch)
# print(state_dict.keys())
# print(netG.keys())
# epoch = state_dict['epoch']
epoch = int(epoch) + 1
# epoch = 187
if cfg.TRAIN.B_NET_D:
Gname = cfg.TRAIN.NET_G
for i in range(len(netsD)):
s_tmp = Gname[:Gname.rfind('/')]
Dname = '%s/netD%d.pth' % (s_tmp, i)
print('Load D from: ', Dname)
state_dict = \
torch.load(Dname, map_location=lambda storage, loc: storage)
netsD[i].load_state_dict(state_dict)
if cfg.CUDA:
text_encoder = text_encoder.cuda()
image_encoder = image_encoder.cuda()
caption_cnn = caption_cnn.cuda()
caption_rnn = caption_rnn.cuda()
netG.cuda()
for i in range(len(netsD)):
netsD[i].cuda()
return [text_encoder, image_encoder, caption_cnn, caption_rnn, netG, netsD, epoch]
# image preprocessing
transform = transforms.Compose([
transforms.ToTensor(),
# transforms.Normalize((0.485, 0.456, 0.406),
# (0.229, 0.224, 0.225))
])
# load text data
dataset = TextDataset(cfg.DATA_DIR,
split_dir,
base_size=cfg.TREE.BASE_SIZE,
transform=transform)
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
# load caption model
caption_cnn = CAPTION_CNN(cfg.CAP.embed_size)
caption_rnn = CAPTION_RNN(cfg.CAP.embed_size, cfg.CAP.hidden_size * 2,
dataset.n_words, cfg.CAP.num_layers)
caption_cnn.to(device)
caption_rnn.to(device)
caption_cnn.load_state_dict(
torch.load(cfg.CAP.caption_cnn_path,
map_location=lambda storage, loc: storage))
caption_rnn.load_state_dict(
torch.load(cfg.CAP.caption_rnn_path,
map_location=lambda storage, loc: storage))
## inference
# load image dataset
ROOT_DIR = os.getcwd()
dataset_val = TextDatasetCOCO(
cfg.DATA_DIR,
'test',
base_size=cfg.TREE.BASE_SIZE,
transform=image_transform,
norm=norm
)
"""
dataloader_val = torch.utils.data.DataLoader(dataset_val,
batch_size=batch_size,
drop_last=True,
shuffle=True,
num_workers=int(cfg.WORKERS))
# Train ##############################################################
encoder = CAPTION_CNN(cfg.CAP.embed_size).cuda()
decoder = CAPTION_RNN(cfg.CAP.embed_size, cfg.CAP.hidden_size * 2,
dataset.n_words, cfg.CAP.num_layers).cuda()
params = list(decoder.parameters()) + list(
encoder.linear.parameters()) + list(encoder.bn.parameters())
criterion = nn.CrossEntropyLoss()
optimizer = torch.optim.Adam(params, lr=cfg.CAP.learning_rate)
log_step = 10
save_step = 10
num_epochs = 50
for epoch in range(num_epochs):
total_step = len(dataloader)
for i, data in enumerate(dataloader):
imgs, captions, cap_lens, class_ids, keys = prepare_data(data)
def build_models(self):
print('Building models...')
print('N_words: ', self.n_words)
#####################
## TEXT ENCODERS ##
#####################
if cfg.TRAIN.NET_E == '':
print('Error: no pretrained text-image encoders')
return
image_encoder = CNN_ENCODER(cfg.TEXT.EMBEDDING_DIM)
img_encoder_path = cfg.TRAIN.NET_E.replace('text_encoder',
'image_encoder')
state_dict = \
torch.load(img_encoder_path, map_location=lambda storage, loc: storage)
image_encoder.load_state_dict(state_dict)
print('Built image encoder: ', image_encoder)
for p in image_encoder.parameters():
p.requires_grad = False
print('Load image encoder from:', img_encoder_path)
image_encoder.eval()
text_encoder = \
RNN_ENCODER(self.n_words, nhidden=cfg.TEXT.EMBEDDING_DIM)
state_dict = \
torch.load(cfg.TRAIN.NET_E,
map_location=lambda storage, loc: storage)
text_encoder.load_state_dict(state_dict)
print('Built text encoder: ', text_encoder)
for p in text_encoder.parameters():
p.requires_grad = False
print('Load text encoder from:', cfg.TRAIN.NET_E)
text_encoder.eval()
######################
## CAPTION MODELS ##
######################
# cnn_encoder and rnn_encoder
if cfg.CAP.USE_ORIGINAL:
caption_cnn = CAPTION_CNN(embed_size=cfg.TEXT.EMBEDDING_DIM)
caption_rnn = CAPTION_RNN(embed_size=cfg.TEXT.EMBEDDING_DIM,
hidden_size=cfg.CAP.HIDDEN_SIZE,
vocab_size=self.n_words,
num_layers=cfg.CAP.NUM_LAYERS)
else:
caption_cnn = Encoder()
caption_rnn = Decoder(idx2word=self.ixtoword)
caption_cnn_checkpoint = torch.load(
cfg.CAP.CAPTION_CNN_PATH,
map_location=lambda storage, loc: storage)
caption_rnn_checkpoint = torch.load(
cfg.CAP.CAPTION_RNN_PATH,
map_location=lambda storage, loc: storage)
caption_cnn.load_state_dict(caption_cnn_checkpoint['model_state_dict'])
caption_rnn.load_state_dict(caption_rnn_checkpoint['model_state_dict'])
for p in caption_cnn.parameters():
p.requires_grad = False
print('Load caption model from: ', cfg.CAP.CAPTION_CNN_PATH)
caption_cnn.eval()
for p in caption_rnn.parameters():
p.requires_grad = False
print('Load caption model from: ', cfg.CAP.CAPTION_RNN_PATH)
#################################
## GENERATOR & DISCRIMINATOR ##
#################################
netsD = []
if cfg.GAN.B_DCGAN:
if cfg.TREE.BRANCH_NUM == 1:
from model import D_NET64 as D_NET
elif cfg.TREE.BRANCH_NUM == 2:
from model import D_NET128 as D_NET
else: # cfg.TREE.BRANCH_NUM == 3:
from model import D_NET256 as D_NET
netG = G_DCGAN()
netsD = [D_NET(b_jcu=False)]
else:
from model import D_NET64, D_NET128, D_NET256
netG = G_NET()
if cfg.TREE.BRANCH_NUM > 0:
netsD.append(D_NET64())
if cfg.TREE.BRANCH_NUM > 1:
netsD.append(D_NET128())
if cfg.TREE.BRANCH_NUM > 2:
netsD.append(D_NET256())
netG.apply(weights_init)
# print(netG)
for i in range(len(netsD)):
netsD[i].apply(weights_init)
# print(netsD[i])
print('# of netsD', len(netsD))
epoch = 0
if cfg.TRAIN.NET_G != '':
state_dict = \
torch.load(cfg.TRAIN.NET_G, map_location=lambda storage, loc: storage)
netG.load_state_dict(state_dict)
print('Load G from: ', cfg.TRAIN.NET_G)
istart = cfg.TRAIN.NET_G.rfind('_') + 1
iend = cfg.TRAIN.NET_G.rfind('.')
epoch = cfg.TRAIN.NET_G[istart:iend]
epoch = int(epoch) + 1
if cfg.TRAIN.B_NET_D:
Gname = cfg.TRAIN.NET_G
for i in range(len(netsD)):
s_tmp = Gname[:Gname.rfind('/')]
Dname = '%s/netD%d.pth' % (s_tmp, i)
print('Load D from: ', Dname)
state_dict = \
torch.load(Dname, map_location=lambda storage, loc: storage)
netsD[i].load_state_dict(state_dict)
text_encoder = text_encoder.to(cfg.DEVICE)
image_encoder = image_encoder.to(cfg.DEVICE)
caption_cnn = caption_cnn.to(cfg.DEVICE)
caption_rnn = caption_rnn.to(cfg.DEVICE)
netG.to(cfg.DEVICE)
for i in range(len(netsD)):
netsD[i].to(cfg.DEVICE)
return [
text_encoder, image_encoder, caption_cnn, caption_rnn, netG, netsD,
epoch
]