Tesseract-OCR 安装

[ 2015-10-30 09:54:45 | Author: zhenhua ]
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编译环境: gcc gcc-c++ make(这个环境一般机器都具备,可以忽略)
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yum install gcc gcc-c++ make
依赖的包: autoconf automake libtool libjpeg-devel libpng-devel libtiff-devel zlib-devel leptonica(1.67以上)

1. autoconf automake libtool libjpeg-devel libpng-devel libtiff-devel zlib-devel 可以通过yum安装:
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yum install autoconf automake libtool
yum install libjpeg-devel libpng-devel libtiff-devel zlib-devel
2. leptonica 需要源码编译安装

参考资料:
http://paramountideas.com/tesseract-ocr-30-and-leptonica-installation-centos-55-and-opensuse-113
http://www.leptonica.org/source/README.html
下载 leptonica 包: http://www.leptonica.org/source/leptonica-1.68.tar.gz
解压后切换到 leptonica-1.68 根目录
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./configure
make
make install
tesseract安装:
依赖安装完毕后开始安装tesseract
下载 tesseract-3.01 安装包: http://tesseract-ocr.googlecode.com/files/tesseract-3.01.tar.gz
解压后切换到 tesseract-3.01 根目录
(如果在make时遇到类似 strngs.h:1: error: stray '\357' in program 的错误,请将 tesseract-3.01/ccutil/strngs.h 文件转为 ANSI 编码保存,再重新编译)
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./autogen.sh
./configure
make
make install
ldconfig
tesseract英文语言包安装:
下载 tesseract-3.01 英文语言包: http://tesseract-ocr.googlecode.com/files/tesseract-ocr-3.01.eng.tar.gz
解压后将 tesseract-ocr/tessdata 下的所有文件全部拷贝到 /usr/local/share/tessdata 下
安装完毕.
测试一下:
切换到解压后的 tesseract-3.01 根目录(这个目录下有一个自带的 phototest.tif 可以做测试用)
命令行:
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tesseract phototest.tif phototest -l eng
输出:
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Tesseract Open Source OCR Engine v3.01 with Leptonica
Page 0
这时应该在当前目录生成一个 phototest.txt 文本文件,内容就是 phototest.tif 显示的文字.
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