PPOCR-Det Paddle To ONNX

Download PP-OCRv4_det

cd model
wget -c https://paddleocr.bj.bcebos.com/PP-OCRv4/chinese/ch_PP-OCRv4_det_infer.tar
tar -xvf ch_PP-OCRv4_det_infer.tar
rm ch_PP-OCRv4_det_infer.tar
cd ..

Convert paddle to ONNX

Install paddle2onnx

paddle2onnx --model_dir ./model/ch_PP-OCRv4_det_infer \
--model_filename inference.pdmodel \
--params_filename inference.pdiparams \
--save_file ./model/ch_PP-OCRv4_det_infer/model.onnx \
--opset_version 12 \
--enable_dev_version True

# Seting fix input shape
python -m paddle2onnx.optimize --input_model model/ch_PP-OCRv4_det_infer/model.onnx \
                               --output_model model/ch_PP-OCRv4_det_infer/ppocrv4_det.onnx \
                               --input_shape_dict "{'x':[1,3,480,480]}"