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2.增加windows环境下可以直接执行gen_ocr_train_val.py的bat文件gen_ocr_train_val.bat
3.执行gen_ocr_train_val.py脚本时，如果没有划分好的train.txt和val.txt标注文件，会报没有这些文件的错误

2.增加windows环境下可以直接执行gen_ocr_train_val.py的bat文件gen_ocr_train_val.bat
3.执行gen_ocr_train_val.py脚本时，如果没有划分好的train.txt和val.txt标注文件，会报没有这些文件的错误

fix cls type

raise error when run on cpu but set use_gpu as True

Update joinus.png

add gpu check

add benchmark log

add tests readme

fix prepare.sh

split cpp inference

update joinus

New functions of PPOCRLabel release 

New functions: Open the dataset folder, image rotation, add shortcut key description, repair the direction shortcut key movement function under batch processing 

fix cpp