def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = { 'Feat': opt.FeatureExtraction,'Seq': opt.SequenceModeling, 'Pred': "CTC-Attn"}
""" FeatureExtraction """
if opt.FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'CRNN':
self.FeatureExtraction = CRNN()
opt.output_channel=512
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d((None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if opt.SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output, opt.hidden_size, opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size, opt.hidden_size))
self.SequenceModeling_output = opt.hidden_size
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
self.CTC_Prediction = nn.Linear(self.SequenceModeling_output, opt.ctc_num_class)
self.Attn_Prediction = Attention(self.SequenceModeling_output, opt.hidden_size, opt.num_class)
def __init__(self, opt):
super(Model_s, self).__init__()
self.opt = opt
self.stages = {
'Trans': opt.Transformation,
'Feat': opt.FeatureExtraction,
'Seq': opt.SequenceModeling,
'Pred': opt.Prediction
}
""" Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel)
else:
print('No Transformation module specified')
# model scatter
self.Feat_Extraction = SCATTER(opt=opt,
input_channel=opt.input_channel,
lstm_layer=opt.LSTM_Layer,
selective_layer=opt.Selective_Layer)
""" FeatureExtraction """
""" Sequence modeling"""
""" Prediction """
self.Prediction_atten = nn.ModuleList([
Attention(1024, opt.hidden_size, opt.num_class_atten)
for _ in range(opt.Selective_Layer)
])
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {
'Trans': opt.Transformation,
'Feat': opt.FeatureExtraction,
'Seq': opt.SequenceModeling,
'Pred': opt.Prediction
}
""" Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
if opt.FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'DenseNet':
self.FeatureExtraction = DenseNet(opt.input_channel,
opt.output_channel)
else:
raise Exception('No FeatureExtraction module specified')
if opt.FeatureExtraction == 'DenseNet':
self.FeatureExtraction_output = 768 # DenseNet output channel is 768
else:
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
# self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d((None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if opt.SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output,
opt.hidden_size, opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size,
opt.hidden_size))
self.SequenceModeling_output = opt.hidden_size
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if opt.Prediction == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output,
opt.num_class)
elif opt.Prediction == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output,
opt.hidden_size, opt.num_class)
else:
raise Exception('Prediction is neither CTC or Attn')
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {
'Trans': opt.Transformation,
'Feat': opt.FeatureExtraction,
'Seq': opt.SequenceModeling,
'Pred': opt.Prediction
}
""" 1. 空间转换层: Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork( # Spatial: 空间
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel) # fiducial 基准
else:
print('No Transformation module specified')
""" 2. 特征抽取层: FeatureExtraction """
if opt.FeatureExtraction == 'VGG':
# opt.input_channel: 输入图片的深度 depth, opt.output_channel: 512
self.FeatureExtraction = VGG_FeatureExtractor(
opt.input_channel,
opt.output_channel) # out: batch, 512, 1, 24
elif opt.FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.input_channel, opt.output_channel)
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512 opt.output_channel: default 512
# 512是特征长度, 24是序列长度
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
""" 3. 序列模型层: Sequence modeling"""
if opt.SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(
self.FeatureExtraction_output, opt.hidden_size,
opt.hidden_size), # 序列特征长度: 512, 隐藏: 256, 输出层: 256
BidirectionalLSTM(opt.hidden_size, opt.hidden_size,
opt.hidden_size))
self.SequenceModeling_output = opt.hidden_size
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" 4. 预测层: Prediction """
if opt.Prediction == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output,
opt.num_class)
elif opt.Prediction == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output,
opt.hidden_size, opt.num_class)
else:
raise Exception('Prediction is neither CTC or Attn')
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {
'Transformation': opt.Transformation,
'FeatureExtraction': opt.FeatureExtraction,
'SequenceModeling': opt.SequenceModeling,
'Prediction': opt.Prediction
}
""" Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
opt.ft_config['trans'],
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
if opt.FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.ft_config['feat'], opt.input_channel, opt.output_channel)
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if opt.SequenceModeling == 'BiLSTM':
self.SequenceModeling = BiLSTM(opt.ft_config['seq'],
self.FeatureExtraction_output,
opt.hidden_size)
self.SequenceModeling_output = opt.hidden_size
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if opt.Prediction == 'CTC':
self.Prediction = CTC_Prediction(opt.ft_config['pred'],
self.SequenceModeling_output,
opt.num_class)
elif opt.Prediction == 'Attn':
self.Prediction = Attention(opt.ft_config['pred'],
self.SequenceModeling_output,
opt.hidden_size, opt.num_class)
else:
raise Exception('Prediction is neither CTC or Attn')
self.set_parameter_requires_grad()
self.optimizers = self.configure_optimizers()
self.make_statistics_params()
def __init__(self, FeatureExtraction='ResNet', PAD=False, Prediction='CTC', \
SequenceModeling='BiLSTM', Transformation='TPS', batch_max_length=25, \
batch_size=192, character='0123456789abcdefghijklmnopqrstuvwxyz', \
hidden_size=256, image_folder='data\\OCR-data-labelled\\OCR-data\\validate\\val', \
imgH=32, imgW=100, input_channel=1, num_class=37, num_fiducial=20, num_gpu=1, \
output_channel=512, rgb=False, saved_model='saved_models/TPS-ResNet-BiLSTM-CTC-Seed1111/best_accuracy.pth', \
sensitive=False, workers=4):
super(Model, self).__init__()
self.stages = {
'Trans': Transformation,
'Feat': FeatureExtraction,
'Seq': SequenceModeling,
'Pred': Prediction
}
""" Transformation """
if Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=num_fiducial,
I_size=(imgH, imgW),
I_r_size=(imgH, imgW),
I_channel_num=input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
if FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
input_channel, output_channel)
elif FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
input_channel, output_channel)
elif FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
input_channel, output_channel)
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = output_channel # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output, hidden_size,
hidden_size),
BidirectionalLSTM(hidden_size, hidden_size, hidden_size))
self.SequenceModeling_output = hidden_size
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if Prediction == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output,
num_class)
elif Prediction == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output,
hidden_size, num_class)
else:
raise Exception('Prediction is neither CTC or Attn')
def __init__(self, cfg):
super(OCR_MODEL, self).__init__()
self.cfg = cfg
self.stages = {
'Trans': self.cfg.OCR.TRANSFORMATION,
'Feat': self.cfg.OCR.FEATURE_EXTRACTION,
'Seq': self.cfg.OCR.SEQUENCE_MODELING,
'Pred': self.cfg.OCR.PREDICTION
}
""" Transformation """
if self.cfg.OCR.TRANSFORMATION == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=self.cfg.OCR.NUM_FIDUCIAL,
I_size=(cfg.BASE.IMG_H, cfg.BASE.IMG_W),
I_r_size=(cfg.BASE.IMG_H, cfg.BASE.IMG_W),
I_channel_num=self.cfg.OCR.INPUT_CHANNEL)
else:
print('No Transformation module specified')
""" FeatureExtraction """
if self.cfg.OCR.FEATURE_EXTRACTION == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
self.cfg.OCR.INPUT_CHANNEL, self.cfg.OCR.OUTPUT_CHANNEL)
elif self.cfg.OCR.FEATURE_EXTRACTION == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
self.cfg.OCR.INPUT_CHANNEL, self.cfg.OCR.OUTPUT_CHANNEL)
elif self.cfg.OCR.FEATURE_EXTRACTION == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
self.cfg.OCR.INPUT_CHANNEL, self.cfg.OCR.OUTPUT_CHANNEL)
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = self.cfg.OCR.OUTPUT_CHANNEL # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if self.cfg.OCR.SEQUENCE_MODELING == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output,
self.cfg.OCR.HIDDEN_SIZE,
self.cfg.OCR.HIDDEN_SIZE),
BidirectionalLSTM(self.cfg.OCR.HIDDEN_SIZE,
self.cfg.OCR.HIDDEN_SIZE,
self.cfg.OCR.HIDDEN_SIZE))
self.SequenceModeling_output = self.cfg.OCR.HIDDEN_SIZE
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if self.cfg.OCR.PREDICTION == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output,
self.cfg.OCR.NUM_CLASS)
elif self.cfg.OCR.PREDICTION == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output,
self.cfg.OCR.HIDDEN_SIZE,
self.cfg.OCR.NUM_CLASS)
else:
raise Exception('Prediction is neither CTC or Attn')
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.transform = TPS_SpatialTransformerNetwork(opt["fiducial_num"],
opt["img_size"],
opt["img_r_size"],
opt["img_channel"])
self.features_extractor = ResNet_FeatureExtractor(opt["img_channel"])
self.GAP = nn.AdaptiveAvgPool2d((None, 1))
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(512, opt["h_dim"], opt["h_dim"]),
BidirectionalLSTM(opt["h_dim"], opt["h_dim"], opt["h_dim"]))
self.Prediction = Attention(opt["h_dim"], opt["h_dim"], opt["out_dim"])
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {'Trans': opt.Transformation, 'Feat': opt.FeatureExtraction,
'Seq': opt.SequenceModeling, 'Pred': opt.Prediction}
""" Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial, I_size=(opt.imgH, opt.imgW), I_r_size=(opt.imgH, opt.imgW), I_channel_num=opt.input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
if opt.FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet_PyTorch':
self.FeatureExtraction = models.resnet34(pretrained=True)
#Freeze all the parameters of the feature extractor
if opt.freeze_FeatureExtraction:
print("Freezing the parameters of the resnet !")
for param in self.FeatureExtraction.parameters():
param.requires_grad = False
# delete the avgpool and the fc layer of the resnet
self.FeatureExtraction = nn.Sequential(*(list(self.FeatureExtraction.children())[:-2]))
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d((None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if opt.SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output, opt.hidden_size, opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size, opt.hidden_size))
self.SequenceModeling_output = opt.hidden_size
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if opt.Prediction == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output, opt.num_class)
elif opt.Prediction == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output, opt.hidden_size, opt.num_class)
else:
raise Exception('Prediction is neither CTC or Attn')
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {'Trans': opt['Transformation'], 'Feat': opt['FeatureExtraction'],
'Seq': opt['SequenceModeling'], 'Pred': opt['Prediction']}
""" Transformation """
if opt['Transformation'] == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt['num_fiducial'], I_size=(opt['imgH'], opt['imgW']), I_r_size=(opt['imgH'], opt['imgW']),
I_channel_num=opt['input_channel'])
#F=opt.num_fiducial, I_size=(opt.imgH, opt.imgW), I_r_size=(opt.imgH, opt.imgW), batch_size=int(opt.batch_size/opt.num_gpu), I_channel_num=opt.input_channel)
else:
print('変換モジュールが指定されていません')
""" FeatureExtraction """
if opt['FeatureExtraction'] == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(opt['input_channel'], opt['output_channel'])
elif opt['FeatureExtraction'] == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(opt['input_channel'], opt['output_channel'])
elif opt['FeatureExtraction'] == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(opt['input_channel'], opt['output_channel'])
else:
raise Exception('FeatureExtractionモジュールが指定されていません')
self.FeatureExtraction_output = opt['output_channel'] # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d((None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if opt['SequenceModeling'] == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output, opt['hidden_size'], opt['hidden_size']),
BidirectionalLSTM(opt['hidden_size'], opt['hidden_size'], opt['hidden_size']))
self.SequenceModeling_output = opt['hidden_size']
else:
print('SequenceModelingモジュールが指定されていません')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if opt['Prediction'] == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output, opt['num_class'])
elif opt['Prediction'] == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output, opt['hidden_size'], opt['num_class'])
else:
raise Exception('予測がCTCでもAttnでもありませんでした。')
def __init__(self ,opt,num_class):
super(Model, self).__init__()
self.opt = opt
""" Transformation TPS """
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial, I_size=(opt.imgH, opt.imgW), I_r_size=(opt.imgH, opt.imgW), I_channel_num=opt.input_channel)
""" FeatureExtraction ResNet"""
self.FeatureExtraction = ResNet_FeatureExtractor(opt.input_channel, opt.output_channel)
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d((None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling BiLSTM"""
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output, opt.hidden_size, opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size, opt.hidden_size))
self.SequenceModeling_output = opt.hidden_size
""" Prediction Attn"""
self.Prediction = Attention(self.SequenceModeling_output, opt.hidden_size, opt.num_class ,num_class)
def __init__(self, imgW, imgH, num_class, batch_max_length):
super(Model, self).__init__()
num_fiducial = 20
input_channel = 1
output_channel = 512
hidden_size = 256
self.batch_max_length = batch_max_length
self.stages = {
'Trans': "TPS",
'Feat': "ResNet",
'Seq': "BiLSTM",
'Pred': "Attn"
}
""" Transformation """
self.Transformation = TPS_SpatialTransformerNetwork(
F=num_fiducial,
I_size=(imgH, imgW),
I_r_size=(imgH, imgW),
I_channel_num=input_channel)
""" FeatureExtraction """
self.FeatureExtraction = ResNet_FeatureExtractor(
input_channel, output_channel)
self.FeatureExtraction_output = output_channel # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output, hidden_size,
hidden_size),
BidirectionalLSTM(hidden_size, hidden_size, hidden_size))
self.SequenceModeling_output = hidden_size
""" Prediction """
self.Prediction = Attention(self.SequenceModeling_output, hidden_size,
num_class)
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {
'Trans': opt.Transformation,
'Feat': opt.FeatureExtraction,
'Seq': opt.SequenceModeling,
'Pred': opt.Prediction
}
""" Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
if opt.FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.input_channel, opt.output_channel)
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
elif opt.FeatureExtraction == 'AsterRes':
self.FeatureExtraction = ResNet_ASTER2(opt.input_channel,
opt.output_channel)
elif opt.FeatureExtraction == 'ResnetFpn':
self.FeatureExtraction = ResNet_FPN()
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
""" Sequence modeling"""
if opt.SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output,
opt.hidden_size, opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size,
opt.hidden_size))
self.SequenceModeling_output = opt.hidden_size
elif opt.SequenceModeling == 'Bert':
cfg = Config()
cfg.dim = opt.output_channel
cfg.dim_c = opt.output_channel # 降维减少计算量
cfg.p_dim = opt.position_dim # 一张图片cnn编码之后的特征序列长度
cfg.max_vocab_size = opt.batch_max_length + 1 # 一张图片中最多的文字个数, +1 for EOS
cfg.len_alphabet = opt.alphabet_size # 文字的类别个数
self.SequenceModeling = Bert_Ocr(cfg)
elif opt.SequenceModeling == 'SRN':
self.SequenceModeling = Transforme_Encoder()
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if opt.Prediction == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output,
opt.num_class)
elif opt.Prediction == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output,
opt.hidden_size, opt.num_class)
elif opt.Prediction == 'Bert_pred':
pass
elif opt.Prediction == 'SRN':
self.Prediction = SRN_Decoder(n_position=opt.n_position)
else:
raise Exception('Prediction is neither CTC or Attn')
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {
'Trans': opt.Transformation,
'Feat': opt.FeatureExtraction,
'Seq': opt.SequenceModeling,
'Pred': opt.Prediction
}
""" Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
if opt.FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet' or 'SEResNet' == opt.FeatureExtraction:
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.input_channel, opt.output_channel, opt)
elif 'SEResNetXt' in opt.FeatureExtraction:
opt.output_channel = 2048
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.input_channel, opt.output_channel, opt)
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
if opt.dropout > 0:
self.dropout = nn.Dropout(opt.dropout)
else:
self.dropout = None
""" Sequence modeling"""
if opt.SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output,
opt.hidden_size, opt.hidden_size,
opt.rnnlayers, opt.rnndropout),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size,
opt.hidden_size, opt.rnnlayers,
opt.rnndropout))
self.SequenceModeling_output = opt.hidden_size
elif opt.SequenceModeling == 'BiGRU':
self.SequenceModeling = nn.Sequential(
BidirectionalGRU(self.FeatureExtraction_output,
opt.hidden_size, opt.hidden_size,
opt.rnnlayers, opt.rnndropout),
BidirectionalGRU(opt.hidden_size, opt.hidden_size,
opt.hidden_size, opt.rnnlayers,
opt.rnndropout))
self.SequenceModeling_output = opt.hidden_size
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if opt.Prediction == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output,
opt.num_class + 1)
elif opt.Prediction == 'Attn':
self.Prediction = Attention(opt, self.SequenceModeling_output,
opt.hidden_size, opt.num_class + 2)
elif opt.Prediction == 'CTC_Attn':
self.Prediction_ctc = nn.Linear(self.SequenceModeling_output,
opt.num_class + 1)
self.Prediction_attn = Attention(opt, self.SequenceModeling_output,
opt.hidden_size,
opt.num_class + 2)
else:
raise Exception('Prediction is neither CTC or Attn')
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {
'Trans': opt.Transformation,
'Feat': opt.FeatureExtraction,
'Seq': opt.SequenceModeling,
'Pred': opt.Prediction
}
""" Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
map_backbon_to_len_sequence = {'VGG': 24, 'RCNN': 26, 'ResNet': 26}
self.len_sequence = map_backbon_to_len_sequence[opt.FeatureExtraction]
if opt.FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.input_channel, opt.output_channel)
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
self.GraphConvolution_output = opt.output_channel_GCN
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if opt.SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output,
opt.hidden_size, opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size,
opt.hidden_size))
self.SequenceModeling_output = opt.hidden_size
else:
if opt.SequenceModeling == 'GCN-BiLSTM':
self.SequenceModeling = nn.Sequential(
GraphConvolution(opt.batch_size,
self.len_sequence,
self.FeatureExtraction_output,
self.GraphConvolution_output,
bias=False,
scale_factor=5),
BidirectionalLSTM(self.GraphConvolution_output,
opt.hidden_size, opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size,
opt.hidden_size))
self.SequenceModeling_output = opt.hidden_size
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if opt.Prediction == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output,
opt.num_class)
elif opt.Prediction == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output,
opt.hidden_size, opt.num_class)
else:
raise Exception('Prediction is neither CTC or Attn')
def __init__(self,
imgH,
imgW,
input_channel,
output_channel,
hidden_size,
num_class,
batch_max_length,
Transformation="None",
FeatureExtraction="VGG",
SequenceModeling="BiLSTM",
Prediction="CTC",
F=20):
super(Model, self).__init__()
self.stages = {
'Trans': Transformation,
'Feat': FeatureExtraction,
'Seq': SequenceModeling,
'Pred': Prediction
}
""" Transformation """
if Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=F,
I_size=(imgH, imgW),
I_r_size=(imgH, imgW),
I_channel_num=input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
if FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
input_channel, output_channel)
elif FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
input_channel, output_channel)
elif FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
input_channel, output_channel)
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = output_channel # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output, hidden_size,
hidden_size),
BidirectionalLSTM(hidden_size, hidden_size, hidden_size))
self.SequenceModeling_output = hidden_size
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if Prediction == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output,
num_class)
elif Prediction == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output,
hidden_size, num_class)
else:
raise Exception('Prediction is neither CTC or Attn')
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {
'Trans': opt.Transformation,
'Feat': opt.FeatureExtraction,
'Seq': opt.SequenceModeling,
'Pred': opt.Prediction
}
""" Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
map_backbon_to_len_sequence = {'VGG': 24, 'RCNN': 26, 'ResNet': 26}
self.len_sequence = map_backbon_to_len_sequence[opt.FeatureExtraction]
if opt.FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.input_channel, opt.output_channel)
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
self.GraphConvolution_output = opt.output_channel_GCN
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
# if opt.SequenceModeling == 'BiLSTM':
# self.SequenceModeling = nn.Sequential(
# BidirectionalLSTM(self.FeatureExtraction_output, opt.hidden_size, opt.hidden_size),
# BidirectionalLSTM(opt.hidden_size, opt.hidden_size, opt.hidden_size))
# self.SequenceModeling_output = opt.hidden_size
# else :
# if opt.SequenceModeling == 'GCN-BiLSTM':
# self.SequenceModeling = nn.Sequential(
# GraphConvolution(opt.batch_size, self.len_sequence, self.FeatureExtraction_output, self.GraphConvolution_output, bias = False, scale_factor = 2.0,dropout = 0.0),
# BidirectionalLSTM(self.GraphConvolution_output, opt.hidden_size, opt.hidden_size),
# BidirectionalLSTM(opt.hidden_size, opt.hidden_size, opt.hidden_size))
# self.SequenceModeling_output = opt.hidden_size
# else:
# print('No SequenceModeling module specified')
# self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
# if opt.guide_training :
self.SequenceModeling_CTC = nn.Sequential(
WeightDropBiLSTM(self.FeatureExtraction_output,
opt.hidden_size,
opt.hidden_size,
numclass=opt.num_class_ctc,
dropouti=0.05,
wdrop=0.2,
dropouto=0.05),
# GraphConvolution(opt.batch_size, self.len_sequence, self.FeatureExtraction_output, self.GraphConvolution_output, bias = False,scale_factor = 2.0,dropout = 0.0,isnormalize = True),
# BidirectionalLSTM(self.FeatureExtraction_output, opt.hidden_size, opt.hidden_size,dropouti = 0.1, wdrop = 0.2, dropouto = 0.0),
# BidirectionalLSTM(opt.hidden_size, opt.hidden_size, opt.hidden_size,is_last_blstm = True, numclass = opt.num_class_ctc,dropouti = 0.1, wdrop = 0.2, dropouto = 0.1),
# BidirectionalLSTM(self.GraphConvolution_output, opt.hidden_size, opt.hidden_size,is_last_blstm = True, numclass = opt.num_class_ctc),
# nn.Dropout(p=0.2),
# BidirectionalLSTM(opt.hidden_size, opt.hidden_size, opt.hidden_size),
)
self.SequenceModeling_Attn = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output, opt.hidden_size,
opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size,
opt.hidden_size),
)
# self.CTC = nn.Linear(opt.hidden_size, opt.num_class_ctc)
self.Attention = Attention(opt.hidden_size, opt.hidden_size,
opt.num_class_attn)
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {
'Trans': opt.Transformation,
'Feat': opt.FeatureExtraction,
'Seq': opt.SequenceModeling,
'Pred': opt.Prediction
}
""" Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
if opt.FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.input_channel, opt.output_channel)
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if opt.SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output,
opt.hidden_size, opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size,
opt.hidden_size))
self.SequenceModeling_output = opt.hidden_size
elif opt.SequenceModeling == 'Transformer':
self.SequenceModeling = LanguageTransformer(
vocab_size=opt.num_class,
input_size=self.FeatureExtraction_output,
d_model=opt.d_model,
nhead=opt.nhead,
num_encoder_layers=opt.num_encoder_layers,
num_decoder_layers=opt.num_decoder_layers,
dim_feedforward=opt.dim_feedforward,
max_seq_length=opt.max_seq_length,
pos_dropout=opt.pos_dropout,
trans_dropout=opt.trans_dropout,
)
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if opt.Prediction == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output,
opt.num_class)
elif opt.Prediction == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output,
opt.hidden_size, opt.num_class)
elif opt.Prediction == 'None':
self.Prediction = noop
else:
raise Exception('Prediction is neither CTC or Attn')
def __init__(self, cfg):
super(Model, self).__init__()
self.cfg = cfg
self.stages = {'Trans': cfg['model']['transform'], 'Feat': cfg['model']['extraction'],
'Seq': cfg['model']['sequence'], 'Pred': cfg['model']['prediction']}
""" Transformation """
if cfg['model']['transform'] == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=cfg['transform']['num_fiducial'],
I_size=(cfg['dataset']['imgH'],cfg['dataset']['imgW']),
I_r_size=(cfg['dataset']['imgH'], cfg['dataset']['imgW']),
I_channel_num=cfg['model']['input_channel'])
print ("Transformation moduls : {}".format(cfg['model']['transform']))
else:
print('No Transformation module specified')
""" FeatureExtraction """
if cfg['model']['extraction'] == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(cfg['model']['input_channel'], cfg['model']['output_channel'])
elif cfg['model']['extraction'] == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(cfg['model']['input_channel'], cfg['model']['output_channel'])
elif cfg['model']['extraction'] == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(cfg['model']['input_channel'], cfg['model']['output_channel'])
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = cfg['model']['output_channel'] # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d((None, 1)) # Transform final (imgH/16-1) -> 1
print ('Feature extractor : {}'.format(cfg['model']['extraction']))
""" Sequence modeling"""
if cfg['model']['sequence'] == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output, cfg['model']['hidden_size'], cfg['model']['hidden_size']),
BidirectionalLSTM(cfg['model']['hidden_size'], cfg['model']['hidden_size'], cfg['model']['hidden_size']))
self.SequenceModeling_output = cfg['model']['hidden_size']
# SequenceModeling : Transformer
elif cfg['model']['sequence'] == 'Transformer':
self.SequenceModeling = Transformer(
d_model=self.FeatureExtraction_output,
nhead=2,
num_encoder_layers=2,
num_decoder_layers=2,
dim_feedforward=cfg['model']['hidden_size'],
dropout=0.1,
activation='relu')
print('SequenceModeling: Transformer initialized.')
self.SequenceModeling_output = self.FeatureExtraction_output # 입력의 차원과 같은 차원으로 출력 됨
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
print('Sequence modeling : {}'.format(cfg['model']['sequence']))
""" Prediction """
if cfg['model']['prediction'] == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output, cfg['training']['num_class'])
elif cfg['model']['prediction'] == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output, cfg['model']['hidden_size'], cfg['training']['num_class'])
elif cfg['model']['prediction'] == 'Transformer':
self.Prediction = nn.Linear(self.SequenceModeling_output, cfg['training']['num_class'])
else:
raise Exception('Prediction should be in [CTC | Attn | Transformer]')
print ("Prediction : {}".format(cfg['model']['prediction']))
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {
'Trans': opt.Transformation,
'Feat': opt.FeatureExtraction,
'Seq': opt.SequenceModeling,
'Pred': opt.Prediction
}
""" Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
if opt.FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.input_channel, opt.output_channel)
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if opt.SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output,
opt.hidden_size, opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size,
opt.hidden_size))
self.SequenceModeling_output = opt.hidden_size
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if opt.Prediction == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output,
opt.num_class)
elif opt.Prediction == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output,
opt.hidden_size, opt.num_class)
elif opt.Prediction == 'Transformer':
device = torch.device(
'cuda' if torch.cuda.is_available() else 'cpu')
OUTPUT_DIM = opt.num_class
HID_DIM = self.SequenceModeling_output
ENC_LAYERS = 3
DEC_LAYERS = 3
ENC_HEADS = 8
DEC_HEADS = 8
ENC_PF_DIM = 512
DEC_PF_DIM = 512
ENC_DROPOUT = 0.1
DEC_DROPOUT = 0.1
enc = Encoder(HID_DIM, ENC_LAYERS, ENC_HEADS, ENC_PF_DIM,
ENC_DROPOUT, device)
dec = Decoder(OUTPUT_DIM, HID_DIM, DEC_LAYERS, DEC_HEADS,
DEC_PF_DIM, DEC_DROPOUT, device)
TRG_PAD_IDX = 2 #TRG.vocab.stoi[TRG.pad_token]
self.Prediction = Seq2Seq(enc, dec, TRG_PAD_IDX, device).to(device)
self.Prediction.apply(self.initialize_weights)
print("use transformer")
else:
raise Exception('Prediction is neither CTC or Attn')
def __init__(self, opt, SelfSL_layer=False):
super(Model, self).__init__()
self.opt = opt
self.stages = {
"Trans": opt.Transformation,
"Feat": opt.FeatureExtraction,
"Seq": opt.SequenceModeling,
"Pred": opt.Prediction,
}
""" Transformation """
if opt.Transformation == "TPS":
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel,
)
else:
print("No Transformation module specified")
""" FeatureExtraction """
if opt.FeatureExtraction == "VGG":
self.FeatureExtraction = VGG_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == "RCNN":
self.FeatureExtraction = RCNN_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == "ResNet":
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.input_channel, opt.output_channel)
else:
raise Exception("No FeatureExtraction module specified")
self.FeatureExtraction_output = opt.output_channel
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
if not SelfSL_layer: # for STR
"""Sequence modeling"""
if opt.SequenceModeling == "BiLSTM":
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output,
opt.hidden_size, opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size,
opt.hidden_size),
)
self.SequenceModeling_output = opt.hidden_size
else:
print("No SequenceModeling module specified")
self.SequenceModeling_output = self.FeatureExtraction_output
if not SelfSL_layer: # for STR.
"""Prediction"""
if opt.Prediction == "CTC":
self.Prediction = nn.Linear(self.SequenceModeling_output,
opt.num_class)
elif opt.Prediction == "Attn":
self.Prediction = Attention(self.SequenceModeling_output,
opt.hidden_size, opt.num_class)
else:
raise Exception("Prediction is neither CTC or Attn")
else:
"""for self-supervised learning (SelfSL)"""
self.AdaptiveAvgPool_2 = nn.AdaptiveAvgPool2d(
(None, 1)) # make width -> 1
if SelfSL_layer == "CNN":
self.SelfSL_FFN_input = self.FeatureExtraction_output
if "RotNet" in self.opt.self:
self.SelfSL = nn.Linear(self.SelfSL_FFN_input,
4) # 4 = [0, 90, 180, 270] degrees
elif "MoCo" in self.opt.self:
self.SelfSL = nn.Linear(self.SelfSL_FFN_input,
128) # 128 is used for MoCo paper.
class Model(nn.Module):
def __init__(self, opt):
super(Model, self).__init__()
self.opt = opt
self.stages = {
'Trans': opt.Transformation,
'Feat': opt.FeatureExtraction,
'Seq': opt.SequenceModeling,
'Pred': opt.Prediction
}
""" Transformation """
if opt.Transformation == 'TPS':
self.Transformation = TPS_SpatialTransformerNetwork(
F=opt.num_fiducial,
I_size=(opt.imgH, opt.imgW),
I_r_size=(opt.imgH, opt.imgW),
I_channel_num=opt.input_channel)
else:
print('No Transformation module specified')
""" FeatureExtraction """
if opt.FeatureExtraction == 'VGG':
self.FeatureExtraction = VGG_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'RCNN':
self.FeatureExtraction = RCNN_FeatureExtractor(
opt.input_channel, opt.output_channel)
elif opt.FeatureExtraction == 'ResNet':
self.FeatureExtraction = ResNet_FeatureExtractor(
opt.input_channel, opt.output_channel)
else:
raise Exception('No FeatureExtraction module specified')
self.FeatureExtraction_output = opt.output_channel # int(imgH/16-1) * 512
self.AdaptiveAvgPool = nn.AdaptiveAvgPool2d(
(None, 1)) # Transform final (imgH/16-1) -> 1
""" Sequence modeling"""
if opt.SequenceModeling == 'BiLSTM':
self.SequenceModeling = nn.Sequential(
BidirectionalLSTM(self.FeatureExtraction_output,
opt.hidden_size, opt.hidden_size),
BidirectionalLSTM(opt.hidden_size, opt.hidden_size,
opt.hidden_size))
self.SequenceModeling_output = opt.hidden_size
else:
print('No SequenceModeling module specified')
self.SequenceModeling_output = self.FeatureExtraction_output
""" Prediction """
if opt.Prediction == 'CTC':
self.Prediction = nn.Linear(self.SequenceModeling_output,
opt.num_class)
elif opt.Prediction == 'Attn':
self.Prediction = Attention(self.SequenceModeling_output,
opt.hidden_size, opt.num_class)
elif opt.Prediction == 'Transformer':
device = torch.device(
'cuda' if torch.cuda.is_available() else 'cpu')
OUTPUT_DIM = opt.num_class
HID_DIM = self.SequenceModeling_output
ENC_LAYERS = 3
DEC_LAYERS = 3
ENC_HEADS = 8
DEC_HEADS = 8
ENC_PF_DIM = 512
DEC_PF_DIM = 512
ENC_DROPOUT = 0.1
DEC_DROPOUT = 0.1
enc = Encoder(HID_DIM, ENC_LAYERS, ENC_HEADS, ENC_PF_DIM,
ENC_DROPOUT, device)
dec = Decoder(OUTPUT_DIM, HID_DIM, DEC_LAYERS, DEC_HEADS,
DEC_PF_DIM, DEC_DROPOUT, device)
TRG_PAD_IDX = 2 #TRG.vocab.stoi[TRG.pad_token]
self.Prediction = Seq2Seq(enc, dec, TRG_PAD_IDX, device).to(device)
self.Prediction.apply(self.initialize_weights)
print("use transformer")
else:
raise Exception('Prediction is neither CTC or Attn')
def initialize_weights(self, m):
if hasattr(m, 'weight') and m.weight.dim() > 1:
nn.init.xavier_uniform_(m.weight.data)
def forward(self, input, text, is_train=True):
""" Transformation stage """
if not self.stages['Trans'] == "None":
input = self.Transformation(input)
""" Feature extraction stage """
visual_feature = self.FeatureExtraction(input)
visual_feature = self.AdaptiveAvgPool(
visual_feature.permute(0, 3, 1, 2)) # [b, c, h, w] -> [b, w, c, h]
visual_feature = visual_feature.squeeze(3)
""" Sequence modeling stage """
if self.stages['Seq'] == 'BiLSTM':
contextual_feature = self.SequenceModeling(visual_feature)
else:
contextual_feature = visual_feature # for convenience. this is NOT contextually modeled by BiLSTM
""" Prediction stage """
if self.stages['Pred'] == 'CTC':
prediction = self.Prediction(contextual_feature.contiguous())
elif self.stages['Pred'] == 'Transformer':
prediction = self.Prediction(contextual_feature.contiguous(), text,
is_train)
else:
prediction = self.Prediction(
contextual_feature.contiguous(),
text,
is_train,
batch_max_length=self.opt.batch_max_length)
return prediction
