This repository implements the the encoder and decoder model with attention model for OCR, the encoder uses CNN+Bi-LSTM, the decoder uses GRU. This repository is modified from https://github.com/meijieru/crnn.pytorch
Earlier I had an open source version, but had some problems identifying images of fixed width. Recently I modified the model to support image recognition with variable width. The function is the same as CRNN. Due to the time problem, there is no pre-training model this time, which will be updated later.

pytorch 0.4.1
opencv_python

cd Attention_ocr.pytorch
pip install -r requirements.txt

pretrained model coming soon

1. Here i choose a small dataset from Synthetic_Chinese_String_Dataset, about 270000+ images for training, 20000 images for testing. download the image data from Baidu
2. the train_list.txt and test_list.txt are created as the follow form:

# path/to/image_name.jpg label
path/AttentionData/50843500_2726670787.jpg 情笼罩在他们满是沧桑
path/AttentionData/57724421_3902051606.jpg 心态的松弛决定了比赛
path/AttentionData/52041437_3766953320.jpg 虾的鲜美自是不可待言

3. change the trainlist and vallist parameter in train.py, and start train

cd Attention_ocr.pytorch
python train.py --trainlist ./data/ch_train.txt --vallist ./data/ch_test.txt

then you can see in the terminel as follow: there uses the decoderV2 model for decoder.

git checkout AttentionOcrV1

1. crnn.pytorch
2. Attention-OCR
3. Seq2Seq-PyTorch
4. caffe_ocr

• change LSTM to Conv1D, it can greatly accelerate the inference
• change the cnn bone model with inception net, densenet
• realize the decoder with transformer model