Centos7 安装 tesseract-ocr 4.0

由于tesseract在github上只提供了ubuntu与mac的教程，并且我在部署Centos时遇到了各种难解问题，好不容易部署成功特发表一篇文章记录。

下载tesseract

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

安装一些常用的包

yum install gtk2-devel yasm glibc.i686 libstdc++.so.6 libgtk-x11-2.0.so libatk-1.0.so.0 libcairo.so.2 libcups.so.2 libgdk-x11-2.0.so.0 libgdk_pixbuf-2.0.so.0 libgtk-x11-2.0.so.0 libpango-1.0.so.0 libpangocairo-1.0.so.0 libICE.so.6 libSM.so.6 libmng.so.1 libpng12.so.0 libGLU.so.1 -y

安装开发工具

 yum groupinstall "Development Tools"

如需编译训练环境安装icu

下载

wget http://download.icu-project.org/files/icu4c/52.1/icu4c-52_1-src.tgz

解压

tar -xvzf icu4c-52_1-src.tgz
cd icu/source/
./runConfigureICU Linux --with-library-bits=64

编译：

make -j 5

安装

make install

link

ln -s /usr/local/lib/libicui18n.so.52 /usr/lib64/libicui18n.so.52
ln -s /usr/local/lib/libicuio.so.52 /usr/lib64/libicuio.so.52
ln -s /usr/local/lib/libicuuc.so.52 /usr/lib64/libicuuc.so.52
ln -s /usr/local/lib/libicudata.so.52 /usr/lib64/libicudata.so.5

安装leptonica1.7（4.0要修必须在1.74以上）

下载

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

解压与安装

tar -xzvf leptonica-1.74.4.tar.gz
cd leptonica-1.74.4
./configure --prefix=/usr/local/
make && make install

环境变量的配置：

vim \etc\bashrc
在文本最底下添加代码

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH
CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:/usr/local/include/
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/lib
export LD_LIBRARY_PATH
LIBRARY_PATH=$LIBRARY_PATH:/usr/local/lib
export LIBRARY_PATH
TESSDATA_PREFIX=/root/tesseract/
export TESSDATA_PREFIX

刷新文件

source /etc/bashrc

安装autoconf-archive

下载

wget http://springdale.math.ias.edu/data/puias/computational/7/x86_64//autoconf-archive-2016.09.16-1.sdl7.noarch.rpm

安装

rpm -i autoconf-archive-2016.09.16-1.sdl7.noarch.rpm

安装tesseract
回到tesseract目录下按照下列命令依次执行

cd tesseract

./autogen.sh

./configure —prefix=/usr/local/

make install
如还需编译训练环境 命令终端还会有提示

成功

如果你的gcc环境还没支持到c++11 请做下面操作，然后重复上面安装tesseract的步骤
参考链接：http://blog.csdn.net/ppdouble/article/details/52894271

升级c++11

1下载repo文件

wget http://people.centos.org/tru/devtools-2/devtools-2.repo -O /etc/yum.repos.d/devtools-2.repo

2安装

yum install devtoolset-2-gcc devtoolset-2-binutils devtoolset-2-gcc-c++

3创建连接

ln -s /opt/rh/devtoolset-2/root/usr/bin/* /usr/local/bin/