php tesseract,PHPTesseract扩展安装教程

PHP Tesseract OCR是一个PHP的C++扩展，用于PHP环境下的字符识别和OCR学习。本文将详细的介绍Linux和OSX系统下tesseracth，PHP-CPP，PHPTesseract扩展的安装。

1.tesseracth4.0.0安装

由于PHPTesseract是基于tesseracth4.0.0版本开发的，所以必须使用tesseracth4.0.0以上版本。

OSX系统:

使用前请确保已经安装brew命令

# brew install --with-training-tools tesseract

Ubuntu系统:

# apt-get install tesseract-ocr

Centos系统:

1.安装依赖工具:

# yum install autoconf automake libtool libjpeg-devel libpng-devel libtiff-devel zlib-devel

centos7以下需要执行下面步骤:

在centos7以下yum的autoconf版本是2.63，安装tesseract4.0.0需要2.69，所以需要先手动升级autoconf

查看autoconf版本如果是2.69以上版本请跳过直接第二步骤

# rpm -qf /usr/bin/autoconf

卸载

# rpm -e --nodeps autoconf-2.63

安装autoconf 2.69

# wget ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz

# tar zxvf autoconf-2.69.tar.gz

# cd autoconf-2.69

# ./configure

# make

# make install

安装autoconf-archive:

# wget https://mirror.sergal.org/gnu/autoconf-archive/autoconf-archive-2016.09.16.tar.xz

# xz -d autoconf-archive-2016.09.16.tar.xz

# tar -xvf autoconf-archive-2016.09.16.tar

# cd autoconf-archive-2016.09.16

# ./configure

# make

# make install

2.安装leptonica:

# wget http://www.leptonica.org/source/leptonica-1.74.4.tar.gz

# tar zxvf leptonica-1.74.4.tar.gz

# cd leptonica-1.74.4/

# ./configure --prefix=/usr/local/leptonica

# make

# make install

3.配置环境变量

# vi /etc/profile

添加:

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/leptonica/lib/pkgconfig

export PKG_CONFIG_PATH

CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:/usr/local/leptonica/include/leptonica

export CPLUS_INCLUDE_PATH

C_INCLUDE_PATH=$C_INCLUDE_PATH:/usr/local/leptonica/include/leptonica

export C_INCLUDE_PATH

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/leptonica/lib

export LD_LIBRARY_PATH

LIBRARY_PATH=$LIBRARY_PATH:/usr/local/leptonica/lib

export LIBRARY_PATH

LIBLEPT_HEADERSDIR=/usr/local/leptonica/include/leptonica

export LIBLEPT_HEADERSDIR

# source /etc/profile

4.安装C++11(已升级到gcc4.8.1请跳过)

请参考:https://blog.csdn.net/redfivehit/article/details/77275960

5.安装tesseract

# git clone https://github.com/tesseract-ocr/tesseract.git

# cd tesseract

# ./autogen.sh

# ./configure --prefix=/usr/local/tesseract --with-extra-libraries=/usr/local/leptonica/lib

# make

# make install

# make training

# make training-install

6.配置tesseract环境变量

# vi /etc/profile

添加:

PATH=$PATH:/usr/local/tesseract/bin

export PATH

export LC_ALL=C

# source /etc/profile

2.PHP-CPP安装

安装PHP-CPP之前请先把当前PHP环境的php-config添加到环境变量中，执行php-config正确输出请忽略。

# git clone https://github.com/CopernicaMarketingSoftware/PHP-CPP.git

# cd PHP-CPP

# make

# sudo make install

OSX在编译中如果出现多处警告请忽略。

3.PHPTesseract扩展安装

编译PHPTesseract需要GCC4.8以上版本

# git clone https://github.com/2654709623/php-tesseract-ocr.git

# cd php-tesseract-ocr

# make

# sudo make install

OSX在编译中如果出现多处警告请忽略。

成功安装后会输出扩展安装目录，然后在php.ini中添加extension=你的扩展安装目录/tesseract.so。到这里你已经安装好PHPTesseract了，接下来就让我们来探索PHPTesseract的使用及OCR学习吧。