AI Project 12: PaddleOCR environment construction and testing

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OCR technology is the most common technology in daily life, just like the face recognition function.

Record here the whole process of OCR learning.

1. Introduction

OCR recognition is divided into two parts, one is to detect the text, and the other is to recognize the text.

PaddleOCR: An OCR tool library based on flying paddles, including ultra-lightweight Chinese OCR with a total model of only 8.6M. A single model supports Chinese and English digit combination recognition, vertical text recognition, and long text recognition.

PaddleOCR is a Python library whose text recognition performance is not inferior to commercial ones! The deployment was also successful on RV1126. It will be deployed on NPU boards such as RK3568 in the future.

2. Environment Creation

I use the AutoDL cloud platform and rent a 3060 GPU. The price is 1.58 yuan/hour, which is quite cost-effective. You can also use other ones.

1. Environment setup

# 创建
conda create -n paddle python=3.8
# 激活
conda activate paddle

2. Download paddleocr

git clone https://github.com/PaddlePaddle/PaddleOCR.git

3. Install the wheels

cd PaddleOCR
pip install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple

1) Installation error:

Building wheel for lanms-neo (pyproject.toml) ... error error: subprocess-exited-with-error

deal with:

Solve the error when PaddleOCR installs lanms-neo, Could not build wheels for lanms-neo..._Yingque Shiting's Blog-CSDN Blog

2) Error:

ERROR: Failed building wheel for Polygon3

deal with

Open the URL https://www.lfd.uci.edu/~gohlke/pythonlibs/ and download Polygon3-3.0.9.1-cp38-cp38-win_amd64.whl

Install

pip install Polygon3-3.0.9.1-cp38-cp38-win_amd64.whl -i https://pypi.tuna.tsinghua.edu.cn/simple

3) Error:

ERROR: Failed building wheel for lanms-neo

deal with

Error ERROR: Could not build wheels for lanms-neo leads to Failed to build lanms-neo. Analysis and solution of one of the cases_Xingqing's Snail's Blog-CSDN Blog

4. Label samples

1) Install paddlepaddle:

Get started_Flying Paddle-an open source deep learning platform derived from industrial practice

The CPU installation method is used because it is only used for marking:

# 安装paddle
pip install paddlepaddle==2.4.2 -i https://pypi.tuna.tsinghua.edu.cn/simple
​
# 验证安装
安装完成后您可以使用 python 进入 python 解释器，输入import paddle ，再输入 paddle.utils.run_check()
如果出现PaddlePaddle is installed successfully!，说明您已成功安装。
#卸载
python -m pip uninstall paddlepaddle

After installing paddlepadle,

2) Start the annotation tool

# 安装标注工具
cd PaddleOCR/PPOCRLabel
​
python setup.py bdist_wheel 
​
pip install .\dist\PPOCRLabel-2.1.3-py2.py3-none-any.whl -i https://pypi.tuna.tsinghua.edu.cn/simple
​
PPOCRLabel --lang ch

Open PPOCRLabel

PPOCRLabel --lang ch

3) PPOCRLabel usage instructions

Learn how to use PPOCRLabel yourself

5. Test

PaddleOCR provides a series of test images, click here to download and unzip

下载地址
https://paddleocr.bj.bcebos.com/dygraph_v2.1/ppocr_img.zip

执行测试
paddleocr --image_dir ./ppocr_img/imgs/11.jpg --use_angle_cls true --use_gpu false
运行正常

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