===========================serving_params===========================
model_name:ch_PP-OCRv2
python:python3.7
trans_model:-m paddle_serving_client.convert
--det_dirname:./inference/ch_PP-OCRv2_det_infer/
--model_filename:inference.pdmodel
--params_filename:inference.pdiparams
--det_serving_server:./deploy/pdserving/ppocr_det_v2_serving/
--det_serving_client:./deploy/pdserving/ppocr_det_v2_client/
--rec_dirname:./inference/ch_PP-OCRv2_rec_infer/
--rec_serving_server:./deploy/pdserving/ppocr_rec_v2_serving/
--rec_serving_client:./deploy/pdserving/ppocr_rec_v2_client/
serving_dir:./deploy/pdserving
web_service:-m paddle_serving_server.serve
--op:GeneralDetectionOp GeneralInferOp
--port:8181
--gpu_id:"0"|null
cpp_client:ocr_cpp_client.py
--image_dir:../../doc/imgs/1.jpg
