Install Tesseract-OCR in linux

Preparations for installing Tesseract-OCR: Compiling Environment: gccgcc-c ++ make (this environment is generally available on machines and can be ignored) packages on which 1yuminstallgccgcc-c ++ make depends: autoconfautomakelibtoollibjpeg-devellibpng-devellibtif... install Tesseract-OCR
Preparations:
Compiling Environment: gcc-c ++ make (this environment is generally available on machines and can be ignored)
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Yum install gcc-c ++ make
Dependent package: autoconf automake libtool libjpeg-devel libpng-devel libtiff-devel zlib-devel leptonica (more than 1.67)
 
 
1. autoconf automake libtool libjpeg-devel libpng-devel libtiff-devel zlib-devel can be installed through yum:
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Yum install autoconf automake libtool
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Yum install libjpeg-devel libpng-devel libtiff-devel zlib-devel
2. leptonica requires source code compilation and installation
References:
Http://paramountideas.com/tesseract-ocr-30-and-leptonica-installation-centos-55-and-opensuse-113
Http://www.leptonica.org/source/README.html
Download leptonica package: http://www.leptonica.org/source/leptonica-1.68.tar.gz
Unzipping and switch to the leptonica-1.68 root directory
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./Configure
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Make
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Make install
Tesseract installation:
Install tesseract after the dependency is installed.
Download tesseract-3.01 installation package: http://tesseract-ocr.googlecode.com/files/tesseract-3.01.tar.gz
Unzipping and switch to the tesseract-3.01 root directory
(If you encounter something similar to strngs in make. h: 1: error: stray '\ 357' in program error, please put tesseract-3.01/ccutil/strngs. the h file is converted to ANSI encoding for saving and then re-compiled)
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./Autogen. sh
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./Configure
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Make
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Make install
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Ldconfig
Tesseract English language pack installation:
Download tesseract-3.01 English language pack: http://tesseract-ocr.googlecode.com/files/tesseract-ocr-3.01.eng.tar.gz
Decompress the package and copy all files under tesseract-ocr/tessdata to/usr/local/share/tessdata.
Installation is complete.
Test:
Switch to the unzipped tesseract-3.01 root directory (under this directory there is a built-in phototest. tif can be used for testing)
Command line:
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Tesseract phototest. tif phototest-l eng
Output:
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Tesseract Open Source OCR Engine v3.01 with Leptonica
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Page 0
In this case, a phototest.txt text file should be generated in the current directory, which contains the text displayed in phototest. tif.
 
From snowman's blog