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Merge pull request #1361 from LaurentBerger:TesseractInstall
How to install tesseract on windows (#1361)
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‎modules/text/tutorials/install_tesseract/install_tesseract.markdown

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Tesseract (master) installation by using git-bash (version>=2.14.1) and cmake (version >=3.9.1){#tutorial_install_tesseract}
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===============================================================
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-# We assume you installed opencv and opencv_contrib in c:/lib using [this tutorials](http://docs.opencv.org/master/d3/d52/tutorial_windows_install.html#tutorial_windows_gitbash_build]
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-# You must download [png lib](https://sourceforge.net/projects/libpng/files/libpng16/1.6.32/lpng1632.zip/download) and [zlib](https://sourceforge.net/projects/libpng/files/zlib/1.2.11/zlib1211.zip/download).
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Uncompress lpngx.y.zz in folder lpng and zlib in folder zlib. lpng and zlib must be in same folder as opencv and opencv_contrib.
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save this script with name installpngzlib.sh in c:/lib
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@code{.bash}
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#!/bin/bash
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myRepo=$(pwd)
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CMAKE_CONFIG_GENERATOR="Visual Studio 14 2015 Win64"
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RepoSource=zlib
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mkdir Build/$RepoSource
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pushd Build/$RepoSource
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cmake . -G"Visual Studio 14 2015 Win64" \
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-DCMAKE_INSTALL_PREFIX:PATH="$myRepo"/install/zlib -DINSTALL_BIN_DIR:PATH="$myRepo"/install/zlib/bin \
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-DINSTALL_INC_DIR:PATH="$myRepo"/install/zlib/include -DINSTALL_LIB_DIR:PATH="$myRepo"/install/zlib/lib "$myRepo"/"$RepoSource"
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cmake --build . --config release
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cmake --build . --target install --config release
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cmake --build . --config debug
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cmake --build . --target install --config debug
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popd
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RepoSource=lpng
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mkdir Build/$RepoSource
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pushd Build/$RepoSource
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cp "$myRepo"/"$RepoSource"/scripts/pnglibconf.h.prebuilt "$myRepo"/"$RepoSource"/pnglibconf.h
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cmake . -G"Visual Studio 14 2015 Win64" \
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-DZLIB_INCLUDE_DIR:PATH="$myRepo"/install/zlib/include -DZLIB_LIBRARY_DEBUG:FILE="$myRepo"/install/zlib/lib/zlibstaticd.lib \
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-Dld-version-script:BOOL=OFF -DPNG_TESTS:BOOL=OFF -DAWK:STRING= \
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-DZLIB_LIBRARY_RELEASE:FILE="$myRepo"/install/zlib/lib/zlibstatic.lib -DCMAKE_INSTALL_PREFIX="$myRepo"/Install/"$RepoSource" \
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"$myRepo"/"$RepoSource"
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cmake --build . --config release
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cmake --build . --target install --config release
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cmake --build . --config debug
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cmake --build . --target install --config debug
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popd
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@endcode
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-# In git command line enter the following command :
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@code{.bash}
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./installpngzlib.sh
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@endcode
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-# save this script with name installTesseract.sh in c:/lib
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@code{.bash}
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#!/bin/bash
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function MAJGitRepo
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{
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if [ ! -d "$myRepo/$1" ]; then
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echo "clonning ${1}"
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git clone $2
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mkdir Build/$1
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else
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echo "update $1"
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cd $1
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git pull --rebase
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cd ..
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fi
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}
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echo "Installing leptonica and tesseract"
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myRepo=$(pwd)
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CMAKE_CONFIG_GENERATOR="Visual Studio 14 2015 Win64"
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MAJGitRepo leptonica https://github.com/DanBloomberg/leptonica.git
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RepoSource=leptonica
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pushd Build/$RepoSource
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cmake -G"$CMAKE_CONFIG_GENERATOR" -DCMAKE_INSTALL_PREFIX="$myRepo"/Install/leptonica "$myRepo/$RepoSource"
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echo "************************* $Source_DIR -->debug"
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cmake --build . --config release
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cmake --build $RepoSource --target install --config release
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popd
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RepoSource=tesseract
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MAJGitRepo $RepoSource https://github.com/tesseract-ocr/tesseract.git
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pushd Build/$RepoSource
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cmake -G"$CMAKE_CONFIG_GENERATOR" -DBUILD_TRAINING_TOOLS:BOOL=OFF -DCMAKE_INSTALL_PREFIX="$myRepo"/Install/tesseract -DLeptonica_DIR:PATH="$myRepo"/Install/leptonica/cmake -DPKG_CONFIG_EXECUTABLE:BOOL=OFF "$myRepo"/"$RepoSource"
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echo "************************* $Source_DIR -->release"
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cmake --build . --config release
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cmake --build . --target install --config release
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popd
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RepoSource=opencv
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pushd Build/$RepoSource
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CMAKE_OPTIONS='-DBUILD_PERF_TESTS:BOOL=OFF -DBUILD_TESTS:BOOL=OFF -DBUILD_DOCS:BOOL=OFF -DWITH_CUDA:BOOL=OFF'
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cmake -G"$CMAKE_CONFIG_GENERATOR" \
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-DTesseract_INCLUDE_DIR:PATH="${myRepo}"/Install/tesseract/include -DTesseract_LIBRARY="${myRepo}"/Install/tesseract/lib/tesseract400.lib -DLept_LIBRARY="${myRepo}"/Install/leptonica/lib/leptonica-1.74.4.lib \
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$CMAKE_OPTIONS -DOPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules \
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-DINSTALL_CREATE_DISTRIB=ON -DCMAKE_INSTALL_PREFIX="$myRepo"/install/"$RepoSource" "$myRepo/$RepoSource"
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echo "************************* $Source_DIR -->devenv debug"
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cmake --build . --config debug
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echo "************************* $Source_DIR -->devenv release"
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cmake --build . --config release
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cmake --build . --target install --config release
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cmake --build . --target install --config debug
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popd
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@endcode
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In this script I suppose you use VS 2015 in 64 bits
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@code{.bash}
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CMAKE_CONFIG_GENERATOR="Visual Studio 14 2015 Win64"
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@endcode
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and leptonica, tesseract will be installed in c:/lib/install
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@code{.bash}
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-DCMAKE_INSTALL_PREFIX="$myRepo"/install/"$RepoSource" "$myRepo/$RepoSource"
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@endcode
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with no Perf tests, no tests, no doc, no CUDA and no example
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@code{.bash}
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CMAKE_OPTIONS='-DBUILD_PERF_TESTS:BOOL=OFF -DBUILD_TESTS:BOOL=OFF -DBUILD_DOCS:BOOL=OFF -DWITH_CUDA:BOOL=OFF -DBUILD_EXAMPLES:BOOL=OFF'
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@endcode
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-# In git command line enter the following command :
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@code{.bash}
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./installTesseract.sh
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@endcode
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-# now we need the language files from tesseract. either clone https://github.com/tesseract-ocr/tessdata, or copy only those language files you need to a folder (example c:\\lib\\install\\tesseract\\tessdata). If you don't want to add a new folder you must copy language file in same folder than your executable
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-# if you created a new folder, then you must add a new variable, TESSDATA_PREFIX with the value c:\\lib\\install\\tessdata to your system's environment
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-# add c:\\Lib\\install\\leptonica\\bin and c:\\Lib\\install\\tesseract\\bin to your PATH environment. If you don't want to modify the PATH then copy tesseract400.dll and leptonica-1.74.4.dll to the same folder than your exe file.

‎modules/text/tutorials/table_of_content_text.markdown

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Text module {#tutorial_table_of_content_text}
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=====================
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- @subpage tutorial_install_tesseract
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*Compatibility:* \> OpenCV 3.4
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*Author:* Laurent Berger
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Instructions in order to properly setup tesseract on windows for the text module.

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