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	refine server readme
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(English|[简体中文](./README_CN.md))
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PaddleOCR provides 2 service deployment methods:
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PaddleOCR provides two service deployment methods:
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- Based on **PaddleHub Serving**: Code path is "`./deploy/hubserving`". Please refer to the [tutorial](../../deploy/hubserving/readme_en.md)
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- Based on **PaddleServing**: Code path is "`./deploy/pdserving`". Please follow this tutorial.
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@ -27,11 +27,11 @@ The introduction and tutorial of Paddle Serving service deployment framework ref
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<a name="environmental-preparation"></a>
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## Environmental preparation
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Need to prepare PaddleOCR operating environment and Paddle Serving operating environment.
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PaddleOCR operating environment and Paddle Serving operating environment are needed.
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1. Prepare PaddleOCR operating environment reference [link](../../doc/doc_ch/installation.md).
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1. Please prepare PaddleOCR operating environment reference [link](../../doc/doc_ch/installation.md).
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2. Prepare the operating environment of PaddleServing, the steps are as follows
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2. The steps of PaddleServing operating environment prepare are as follows:
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    Install serving which used to start the service
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    ```
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@ -78,6 +78,9 @@ wget https://paddleocr.bj.bcebos.com/dygraph_v2.0/ch/ch_ppocr_server_v2.0_det_in
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# Download and unzip the OCR text recognition model
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wget https://paddleocr.bj.bcebos.com/dygraph_v2.0/ch/ch_ppocr_server_v2.0_rec_infer.tar && tar xf ch_ppocr_server_v2.0_rec_infer.tar
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```
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Then, you can use installed paddle_serving_client tool to convert inference model to server model.
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```
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#  Detection model conversion
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python3 -m paddle_serving_client.convert --dirname ./ch_ppocr_server_v2.0_det_infer/ \
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                                         --model_filename inference.pdmodel          \
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@ -79,7 +79,11 @@ PaddleOCR提供2种服务部署方式:
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wget https://paddleocr.bj.bcebos.com/dygraph_v2.0/ch/ch_ppocr_server_v2.0_det_infer.tar && tar xf ch_ppocr_server_v2.0_det_infer.tar
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# 下载并解压 OCR 文本识别模型
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wget https://paddleocr.bj.bcebos.com/dygraph_v2.0/ch/ch_ppocr_server_v2.0_rec_infer.tar && tar xf ch_ppocr_server_v2.0_rec_infer.tar
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```
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接下来,用安装的paddle_serving_client把下载的inference模型转换成易于server部署的模型格式。
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```
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# 转换检测模型
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python3 -m paddle_serving_client.convert --dirname ./ch_ppocr_server_v2.0_det_infer/ \
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                                         --model_filename inference.pdmodel          \
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