Centos 安装tesseract 4.0

安装编译工具

yum -y install automake libtool autoconf gcc gcc-c++

安装依赖项

yum install libjpeg-devel
yum install libpng-devel

安装leptonica

tesseract4.0需要1.74以上的leptonica

下载leptonica-1.74.4
wget http://www.leptonica.org/source/leptonica-1.74.4.tar.gz
tar -xzvf leptonica-1.74.4.tar.gz
cd leptonica-1.74.4
./configure --prefix=/usr/local/
make && make install

添加环境变量
vim /etc/profile

在文件底部添加

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= .../tessdata    //(tesseract安装路径)
export TESSDATA_PREFIX

刷新文件
source /etc/profile

下载并安装tesseract4.0

wget https://github.com/tesseract-ocr/tesseract/archive/4.0.0.tar.gz

tar xzvf tesseract-4.0.0.tar.gz
cd tesseract-4.0.0
./autogen.sh
./configure
make
make install

其他问题

报错：Error in pixReadMemTiff…

缺少了相关依赖项，请执行上面步骤的[安装依赖项]并重新编译安装leptonica即可