def __init__(self, device, model, optimizer, loss, val_loader, \
train_loader, flags, global_state):
self.model = model
self.optimizer = optimizer
self.loss_func = loss
self.train_loader = train_loader
self.eval_loader = val_loader
self.to_use_device = device
self.flags = flags.Global
self.global_state = global_state
if flags.Global.loss_type == 'ctc':
self.converter = CTCLabelConverter(flags)
else:
self.converter = AttnLabelConverter(flags)
def __init__(self, flags):
super(SATRN, self).__init__()
self.inplanes = 1 if flags.Global.image_shape[0] == 1 else 3
self.converter = AttnLabelConverter(flags)
self.num_classes = self.converter.char_num
self.d_model = flags.Transformer.model_dims
self.d_ff = flags.Transformer.feedforward_dims
self.num_encoder = flags.Transformer.num_encoder
self.num_decoder = flags.Transformer.num_decoder
self.h = flags.Transformer.num_head
self.dropout = flags.Transformer.dropout_rate
c = copy.deepcopy
self.attn = MultiHeadedAttention(self.h, self.d_model)
self.laff = LocalityAwareFeedForward(self.d_model, self.d_ff,
self.d_model)
self.ff = PointwiseFeedForward(self.d_model, self.d_ff)
self.position1d = PositionalEncoding(self.d_model, self.dropout)
self.position2d = A2DPE(self.d_model, self.dropout)
self.encoder = Encoder(
EncoderLayer(self.d_model, c(self.attn), c(self.laff),
self.dropout), self.num_encoder)
self.decoder = Decoder(
DecoderLayer(self.d_model, c(self.attn), c(self.attn), c(self.ff),
self.dropout), self.num_decoder)
self.src_embed = nn.Sequential(ShallowCNN(self.inplanes, self.d_model),
self.position2d)
self.tgt_embed = nn.Sequential(
Embeddings(self.num_classes, self.d_model), self.position1d)
self.generator = Generator(self.d_model, self.num_classes)
def __init__(self, flags):
super(DAN, self).__init__()
self.input_shape = flags.Global.image_shape
self.inplanes = self.input_shape[0]
self.strides = [(2, 2), (1, 1), (2, 2), (1, 1), (1, 1)]
self.compress_layer = flags.Architecture.compress_layer
self.block = BasicBlock
self.layers = flags.Architecture.layers
self.maxT = flags.Global.batch_max_length
self.depth = flags.CAM.depth
self.num_channel = flags.CAM.num_channel
self.converter = AttnLabelConverter(flags)
self.num_class = self.converter.char_num
self.num_steps = flags.Global.batch_max_length
self.is_train = flags.Global.is_train
self.feature_extractor = ResNet(self.inplanes, self.block,
self.strides, self.layers,
self.compress_layer)
self.scales = Feature_Extractor(self.input_shape, self.block,
self.strides, self.layers,
self.compress_layer).Iwantshapes()
self.cam_module = CAM(self.scales, self.maxT, self.depth,
self.num_channel)
self.decoder = DTD(self.num_class, self.num_channel)
def __init__(self, device, model, optimizer, loss, val_loader, \
train_loader, flags, global_state):
self.model = model
self.optimizer = optimizer
self.loss_func = loss
self.train_loader = train_loader
self.eval_loader = val_loader
self.to_use_device = device
self.flags = flags.Global
self.global_state = global_state
if flags.Global.loss_type == 'ctc':
self.converter = CTCLabelConverter(flags)
elif flags.Global.loss_type == 'attn':
self.converter = AttnLabelConverter(flags)
else:
raise Exception('Not implemented error!')
logging.info(self.flags)
def __init__(self):
self.config = build_config()
model = build_model(self.config)
device, gpu_count = build_device(self.config)
optimizer = build_optimizer(self.config, model)
model, optimizer, global_state = build_pretrained_weights(self.config, model, optimizer)
self.device = device
if self.config.Global.loss_type == 'ctc':
self.converter = CTCLabelConverter(self.config)
else:
self.converter = AttnLabelConverter(self.config)
self.model = model.to(self.device)
self.keep_ratio_with_pad = self.config.TrainReader.padding
self.channel = self.config.Global.image_shape[0]
self.imgH = self.config.Global.image_shape[1]
self.imgW = self.config.Global.image_shape[2]
self.num_steps = self.config.Global.batch_max_length + 1
def __init__(self):
config = build_config()
model = build_model(config)
device, gpu_count = build_device(config)
optimizer = build_optimizer(config, model)
if gpu_count > 1:
model = nn.DataParallel(model)
model, optimizer, global_state = build_pretrained_weights(
config, model, optimizer)
self.device = device
if config.Global.loss_type == 'ctc':
self.converter = CTCLabelConverter(config)
else:
self.converter = AttnLabelConverter(config)
self.model = model.to(self.device)
self.keep_ratio_with_pad = config.TrainReader.padding
self.channel = config.Global.image_shape[0]
self.imgH = config.Global.image_shape[1]
self.imgW = config.Global.image_shape[2]
def __init__(self, flags):
super(FAN, self).__init__()
self.inplanes = 1 if flags.Global.image_shape[0] == 1 else 3
self.num_inputs = flags.SeqRNN.input_size
self.num_hiddens = flags.SeqRNN.hidden_size
self.converter = AttnLabelConverter(flags)
self.num_classes = self.converter.char_num
self.block = BasicBlock
self.layers = flags.Architecture.layers
self.feature_extractor = ResNet(self.inplanes, self.num_inputs,
self.block, self.layers)
self.reshape_layer = ReshapeLayer()
self.sequence_layer = Attention(self.num_inputs, self.num_hiddens,
self.num_classes)
def __init__(self, flags):
super(SAR, self).__init__()
self.inplanes = 1 if flags.Global.image_shape[0] == 1 else 3
self.input_size = flags.SeqRNN.input_size
self.en_hidden_size = flags.SeqRNN.en_hidden_size
self.de_hidden_size = flags.SeqRNN.de_hidden_size
self.converter = AttnLabelConverter(flags)
self.num_classes = self.converter.char_num
self.block = BasicBlock
self.layers = flags.Architecture.layers
self.feature_extractor = ResNet(self.inplanes, self.input_size,
self.block, self.layers)
self.lstm_encoder = LSTMEncoder(self.input_size, self.en_hidden_size)
self.lstm_decoder = LSTMDecoder(self.input_size, self.en_hidden_size,
self.de_hidden_size, self.num_classes)
class Recoginizer(object):
def __init__(self):
config = build_config()
model = build_model(config)
device, gpu_count = build_device(config)
optimizer = build_optimizer(config, model)
if gpu_count > 1:
model = nn.DataParallel(model)
model, optimizer, global_state = build_pretrained_weights(
config, model, optimizer)
self.device = device
if config.Global.loss_type == 'ctc':
self.converter = CTCLabelConverter(config)
else:
self.converter = AttnLabelConverter(config)
self.model = model.to(self.device)
self.keep_ratio_with_pad = config.TrainReader.padding
self.channel = config.Global.image_shape[0]
self.imgH = config.Global.image_shape[1]
self.imgW = config.Global.image_shape[2]
def preprocess(self, image):
self.transform = transforms.ToTensor()
if self.keep_ratio_with_pad:
w, h = image.size
ratio = w / float(h)
if math.ceil(ratio * self.imgH) > self.imgW:
resized_image = image.resize((self.imgW, self.imgH),
Image.BICUBIC)
resized_image = self.transform(resized_image)
imgP = resized_image.sub(0.5).div(0.5)
else:
resized_W = math.ceil(ratio * self.imgH)
resized_image = image.resize((resized_W, self.imgH),
Image.BICUBIC)
resized_image = self.transform(resized_image)
resized_image = resized_image.sub(0.5).div(0.5)
c, h, w = resized_image.size()
imgP = torch.FloatTensor(*(self.channel, self.imgH,
self.imgW)).fill_(0)
imgP[:, :, :w] = resized_image
imgP[:, :, w:] = resized_image[:, :,
w - 1].unsqueeze(2).expand(
c, h, self.imgW - w)
else:
resized_image = image.resize((self.imgW, self.imgH), Image.BICUBIC)
resized_image = self.transform(resized_image)
imgP = resized_image.sub(0.5).div(0.5)
imgP = imgP.unsqueeze(0)
return imgP
def predict(self, image_tensor):
self.model.eval()
with torch.no_grad():
image_tensor = image_tensor.to(self.device)
outputs = self.model(image_tensor)
outputs = outputs.softmax(dim=2).detach().cpu().numpy()
preds_str = self.converter.decode(outputs)
return preds_str
def __call__(self, image):
image_tensor = self.preprocess(image)
preds_str = self.predict(image_tensor)
return preds_str
class TrainerRec(object):
def __init__(self, device, model, optimizer, loss, val_loader, \
train_loader, flags, global_state):
self.model = model
self.optimizer = optimizer
self.loss_func = loss
self.train_loader = train_loader
self.eval_loader = val_loader
self.to_use_device = device
self.flags = flags.Global
self.global_state = global_state
if flags.Global.loss_type == 'ctc':
self.converter = CTCLabelConverter(flags)
else:
self.converter = AttnLabelConverter(flags)
def train(self):
self.metric = RecMetric(self.converter)
self.model = self.model.to(self.to_use_device)
logging.info(self.to_use_device)
logging.info('Training...')
all_step = self.flags.num_iters
if len(self.global_state) > 0:
best_model = self.global_state['best_model']
global_step = self.global_state['global_step']
else:
best_model = {
'best_acc': 0,
'eval_loss': 0,
'eval_acc': 0,
'norm_edit_dis': 0
}
global_step = 0
try:
while True:
self.model.train()
start_time = time.time()
batch_data = self.train_loader.get_batch()
cur_batch_size = batch_data['img'].shape[0]
targets, targets_lengths = self.converter.encode(
batch_data['label'])
batch_data['targets'] = targets
batch_data['targets_lengths'] = targets_lengths
batch_data['img'] = batch_data['img'].to(self.to_use_device)
batch_data['targets'] = batch_data['targets'].to(
self.to_use_device)
self.optimizer.zero_grad()
if self.flags.loss_type == 'ctc':
predicts = self.model.forward(batch_data['img'])
else:
predicts = self.model.forward(
batch_data['img'], batch_data['targets'][:, :-1])
loss = self.loss_func(predicts, batch_data)
loss.backward()
torch.nn.utils.clip_grad_norm_(self.model.parameters(), 5)
self.optimizer.step()
acc_dict = self.metric(predicts, batch_data['label'])
acc = acc_dict['n_correct'] / cur_batch_size
norm_edit_dis = 1 - acc_dict['norm_edit_dis'] / cur_batch_size
if (global_step + 1) % self.flags.print_batch_step == 0:
interval_batch_time = time.time() - start_time
logging.info(
f"[{global_step + 1} / {all_step}] - "
f"loss:{loss:.4f} - "
f"acc:{acc:.4f} - "
f"norm_edit_dis:{norm_edit_dis:.4f} - "
f"interval_batch_time:{interval_batch_time:.4f} - ")
if (global_step + 1) >= self.flags.eval_batch_step and (
global_step + 1) % self.flags.eval_batch_step == 0:
self.global_state['global_step'] = global_step
eval_dict = self.evaluate()
if eval_dict['eval_acc'] > best_model['best_acc']:
best_model.update(eval_dict)
self.global_state['best_model'] = best_model
model_save_path = f"{self.flags.save_model_dir}/best_acc.pth"
save_checkpoint(model_save_path,
self.model,
self.optimizer,
global_state=self.global_state)
if not self.flags.highest_acc_save_type:
model_save_path = f"{self.flags.save_model_dir}/iter_{global_step + 1}.pth"
save_checkpoint(model_save_path,
self.model,
self.optimizer,
global_state=self.global_state)
if global_step == self.flags.num_iters:
print('end the training')
raise StopIteration
global_step += 1
except KeyboardInterrupt:
save_checkpoint(os.path.join(self.flags.save_model_dir,
'final.pth'),
self.model,
self.optimizer,
global_state=self.global_state)
except:
error_msg = traceback.format_exc()
logging.error(error_msg)
finally:
for k, v in best_model.items():
logging.info(f'{k}: {v}')
def evaluate(self):
logging.info('start evaluate')
self.model.eval()
nums = 0
result_dict = {'eval_loss': 0., 'eval_acc': 0., 'norm_edit_dis': 0.}
show_str = []
with torch.no_grad():
for (img, label) in tqdm(self.eval_loader):
batch_data = {}
batch_data['img'], batch_data['label'] = img, label
targets, targets_lengths = self.converter.encode(
batch_data['label'])
batch_data['targets'] = targets
batch_data['targets_lengths'] = targets_lengths
batch_data['img'] = batch_data['img'].to(self.to_use_device)
batch_data['targets'] = batch_data['targets'].to(
self.to_use_device)
if self.flags.loss_type == 'ctc':
output = self.model.forward(batch_data['img'])
else:
output = self.model.forward(batch_data['img'],
batch_data['targets'][:, :-1])
loss = self.loss_func(output, batch_data)
nums += batch_data['img'].shape[0]
acc_dict = self.metric(output, batch_data['label'])
result_dict['eval_loss'] += loss.item()
result_dict['eval_acc'] += acc_dict['n_correct']
result_dict['norm_edit_dis'] += acc_dict['norm_edit_dis']
show_str.extend(acc_dict['show_str'])
result_dict['eval_loss'] /= len(self.eval_loader)
result_dict['eval_acc'] /= nums
result_dict['norm_edit_dis'] = 1 - result_dict['norm_edit_dis'] / nums
logging.info(f"eval_loss:{result_dict['eval_loss']}")
logging.info(f"eval_acc:{result_dict['eval_acc']}")
logging.info(f"norm_edit_dis:{result_dict['norm_edit_dis']}")
for s in show_str[:10]:
logging.info(s)
self.model.train()
return result_dict