Ubuntu16.04 下编译安装tesseract 4.00.00alpha 及测试

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Ubuntu16.04 下编译安装tesseract 4.00.00alpha 及测试

tesseract 被译作四次元立方体；超正方体，它是一款开源的OCR图片识别工具，支持多种语言，对简单的验证码识别有较好的效果~

1. 3.05.01 及 以后的版本没有Linux的二进制包,需要编译安装.

# 安装相关组件
sudo apt-get install g++ # or clang++ (presumably)
sudo apt-get install autoconf automake libtool
sudo apt-get install autoconf-archive
sudo apt-get install pkg-config
sudo apt-get install libpng12-dev
sudo apt-get install libjpeg8-dev
sudo apt-get install libtiff5-dev
sudo apt-get install zlib1g-dev
sudo apt-get install libicu-dev
sudo apt-get install libpango1.0-dev
sudo apt-get install libcairo2-dev

2. 依赖图像库Leptonica,在编译tesseract前先编译Leptonica, 版本对应关系见Compiling#linux,3.05对应leptonica-1.74.tar.gz

wget .74.tar.gz
tar -xvf leptonica-1.74.tar.gz
cd leptonica-1.74
./configure 
make
make install

3. 编译安装tesseract 4.00.00alpha

git clone .git
cd tesseract
./autogen.sh
./configure 
make
make install

• wiki

python3 调用

sudo pip3 install pytesseract

import pytesseract
vcode = pytesseract.image_to_string(im, lang='eng', config='-psm 12 --tessdata-dir /tessdata/')