Add the overview of PaddleOCR
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# 零基础Python环境搭建
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# 运行环境准备
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## Windows
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[运行环境准备](#paddleocr)
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### 第1步:安装Anaconda
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* [1. Python环境搭建](#1)
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+ [1.1 Windows](#1.1)
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+ [1.2 Mac](#1.2)
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+ [1.3 Linux](#1.3)
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* [2. 安装PaddlePaddle](#2)
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<a name="1"></a>
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## 1. Python环境搭建
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<a name="1.1"></a>
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### 1.1 Windows
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#### 1.1.1 安装Anaconda
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- 说明:使用paddlepaddle需要先安装python环境,这里我们选择python集成环境Anaconda工具包
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- Anaconda是1个常用的python包管理程序
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<img src="../install/windows/anaconda_install_env.png" alt="add conda to path" width="500" align="left"/>
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### 第2步:打开终端并创建conda环境
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#### 1.1.2 打开终端并创建conda环境
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- 打开Anaconda Prompt终端:左下角Windows Start Menu -> Anaconda3 -> Anaconda Prompt启动控制台
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以上anaconda环境和python环境安装完毕
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<a name="1.2"></a>
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### 1.2 Mac
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## Mac
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### 第1步:安装Anaconda
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#### 1.2.1 安装Anaconda
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- 说明:使用paddlepaddle需要先安装python环境,这里我们选择python集成环境Anaconda工具包
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- Anaconda是1个常用的python包管理程序
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- 按默认设置即可,安装需要花费一段时间
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- 建议安装vscode或pycharm等代码编辑器
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### 第2步:打开终端并创建conda环境
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#### 1.2.2 打开终端并创建conda环境
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- 打开终端
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以上anaconda环境和python环境安装完毕
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<a name="1.3"></a>
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### 1.3 Linux
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## Linux
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Linux用户可选择Anaconda或Docker两种方式运行。如果你熟悉Docker且需要训练PaddleOCR模型,推荐使用Docker环境,PaddleOCR的开发流程均在Docker环境下运行。如果你不熟悉Docker,也可以使用Anaconda来运行项目。
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### 第1步:安装Anaconda
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#### 1.3.1 Anaconda环境配置
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- 说明:使用paddlepaddle需要先安装python环境,这里我们选择python集成环境Anaconda工具包
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- Anaconda是1个常用的python包管理程序
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- 在终端中输入`source ~/.bash_profile`以更新环境变量
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- 再在终端输入`conda info --envs`,若能显示当前有base环境,则conda已加入环境变量
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### 第2步:创建conda环境
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- 创建新的conda环境
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```shell
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# 在命令行输入以下命令,创建名为paddle_env的环境
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# 此处为加速下载,使用清华源
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conda create --name paddle_env python=3.8 --channel https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
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# 在命令行输入以下命令,创建名为paddle_env的环境
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# 此处为加速下载,使用清华源
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conda create --name paddle_env python=3.8 --channel https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
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```
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- 该命令会创建1个名为paddle_env、python版本为3.8的可执行环境,根据网络状态,需要花费一段时间
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- 激活刚创建的conda环境,在命令行中输入以下命令:
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```shell
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# 激活paddle_env环境
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conda activate paddle_env
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# 激活paddle_env环境
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conda activate paddle_env
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```
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以上anaconda环境和python环境安装完毕
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以上anaconda环境和python环境安装完毕
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#### 1.3.2 Docker环境配置
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**注意:第一次使用这个镜像,会自动下载该镜像,请耐心等待。**
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```
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# 切换到工作目录下
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cd /home/Projects
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# 首次运行需创建一个docker容器,再次运行时不需要运行当前命令
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# 创建一个名字为ppocr的docker容器,并将当前目录映射到容器的/paddle目录下
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如果您希望在CPU环境下使用docker,使用docker而不是nvidia-docker创建docker
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sudo docker run --name ppocr -v $PWD:/paddle --network=host -it paddlepaddle/paddle:latest-dev-cuda10.1-cudnn7-gcc82 /bin/bash
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如果使用CUDA10,请运行以下命令创建容器,设置docker容器共享内存shm-size为64G,建议设置32G以上
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sudo nvidia-docker run --name ppocr -v $PWD:/paddle --shm-size=64G --network=host -it paddlepaddle/paddle:latest-dev-cuda10.1-cudnn7-gcc82 /bin/bash
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您也可以访问[DockerHub](https://hub.docker.com/r/paddlepaddle/paddle/tags/)获取与您机器适配的镜像。
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# ctrl+P+Q可退出docker 容器,重新进入docker 容器使用如下命令
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sudo docker container exec -it ppocr /bin/bash
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```
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<a name="2"></a>
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## 2. 安装PaddlePaddle
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- 如果您的机器安装的是CUDA9或CUDA10,请运行以下命令安装
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```bash
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python3 -m pip install paddlepaddle-gpu -i https://mirror.baidu.com/pypi/simple
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```
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- 如果您的机器是CPU,请运行以下命令安装
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```bash
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python3 -m pip install paddlepaddle -i https://mirror.baidu.com/pypi/simple
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```
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更多的版本需求,请参照[飞桨官网安装文档](https://www.paddlepaddle.org.cn/install/quick)中的说明进行操作。
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# PaddleOCR全景图与项目克隆
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## 1. PaddleOCR全景图
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PaddleOCR包含丰富的文本检测、文本识别以及端到端算法。结合实际测试与产业经验,PaddleOCR选择DB和CRNN作为基础的检测和识别模型,经过一系列优化策略提出面向产业应用的PP-OCR模型。PP-OCR模型针对通用场景,根据不同语种形成了PP-OCR模型库。基于PP-OCR的能力,PaddleOCR针对文档场景任务发布PP-Structure工具库,包含版面分析和表格识别两大任务。为了打通产业落地的全流程,PaddleOCR提供了规模化的数据生产工具和多种预测部署工具,助力开发者快速落地。
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<div align="center">
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<img src="../overview.png">
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</div>
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## 2. 项目克隆
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### **2.1 克隆PaddleOCR repo代码**
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```
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【推荐】git clone https://github.com/PaddlePaddle/PaddleOCR
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```
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如果因为网络问题无法pull成功,也可选择使用码云上的托管:
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```
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git clone https://gitee.com/paddlepaddle/PaddleOCR
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```
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注:码云托管代码可能无法实时同步本github项目更新,存在3~5天延时,请优先使用推荐方式。
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### **2.2 安装第三方库**
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```
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cd PaddleOCR
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pip3 install -r requirements.txt
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```
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# PaddleOCR快速开始
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- [PaddleOCR快速开始](#paddleocr)
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* [1. 轻量安装](#1)
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+ [1.0 运行环境准备](#10)
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+ [1.1 安装PaddlePaddle2.0](#11)
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+ [1.2 安装PaddleOCR whl包](#12)
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+ [1. 安装PaddleOCR whl包](#1)
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* [2. 便捷使用](#2)
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+ [2.1 命令行使用](#21)
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- [2.1.1 中英文模型](#211)
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- [2.2.1 中英文与多语言使用](#221)
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- [2.2.2 版面分析使用](#222)
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<a name="1"></a>
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## 1. 轻量安装
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<a name="10"></a>
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### 1.0 运行环境准备
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如果您未搭建过Python环境,可以通过[零基础Python环境搭建文档](./environment.)进行环境搭建
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<a name="11"></a>
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### 1.1 安装PaddlePaddle2.0
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- 如果您的机器安装的是CUDA9或CUDA10,请运行以下命令安装
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```bash
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python3 -m pip install paddlepaddle-gpu -i https://mirror.baidu.com/pypi/simple
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```
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- 如果您的机器是CPU,请运行以下命令安装
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```bash
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python3 -m pip install paddlepaddle -i https://mirror.baidu.com/pypi/simple
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```
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更多的版本需求,请参照[飞桨官网安装文档](https://www.paddlepaddle.org.cn/install/quick)中的说明进行操作。
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### 1.2 安装PaddleOCR whl包
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## 1. 安装PaddleOCR whl包
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```bash
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pip install "paddleocr>=2.0.1" # 推荐使用2.0.1+版本
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大部分参数和paddleocr whl包保持一致,见 [whl包文档](../doc/doc_ch/whl.md)
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### 2.2 Python脚本使用
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# PaddleOCR Overview and Project Clone
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## 1. PaddleOCR Overview
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PaddleOCR contains rich text detection, text recognition and end-to-end algorithms. Combining actual testing and industrial experience, PaddleOCR chooses DB and CRNN as the basic detection and recognition models, and proposes a series of models, named PP-OCR, for industrial applications after a series of optimization strategies. The PP-OCR model is aimed at general scenarios and forms a model library according to different languages. Based on the capabilities of PP-OCR, PaddleOCR releases the PP-Structure tool library for document scene tasks, including two major tasks: layout analysis and table recognition. In order to get through the entire process of industrial landing, PaddleOCR provides large-scale data production tools and a variety of prediction deployment tools to help developers quickly turn ideas into reality.
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<div align="center">
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<img src="../overview_en.png">
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</div>
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## 2. Project Clone
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### **2.1 Clone PaddleOCR repo**
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```
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# Recommend
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git clone https://github.com/PaddlePaddle/PaddleOCR
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# If you cannot pull successfully due to network problems, you can also choose to use the code hosting on the cloud:
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git clone https://gitee.com/paddlepaddle/PaddleOCR
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# Note: The cloud-hosting code may not be able to synchronize the update with this GitHub project in real time. There might be a delay of 3-5 days. Please give priority to the recommended method.
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```
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### **2.2 Install third-party libraries**
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```
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cd PaddleOCR
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pip3 install -r requirements.txt
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```
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If you getting this error `OSError: [WinError 126] The specified module could not be found` when you install shapely on windows.
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Please try to download Shapely whl file using [http://www.lfd.uci.edu/~gohlke/pythonlibs/#shapely](http://www.lfd.uci.edu/~gohlke/pythonlibs/#shapely).
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Reference: [Solve shapely installation on windows](
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