Install Tesseract 4.0 in Ubuntu 16.04

Bing 16 Jul 2017

This post expects you to be familiar with compiling software on your Ubuntu operation system.

Configure compiling environment

sudo apt-get install -y build-essential &&\
sudo apt-get install -y python-dev &&\
sudo apt-get install -y python &&\
sudo apt-get install -y python-pip &&\
sudo apt-get install -y python-setuptools &&\
sudo pip install -y cython

Upgrade g++5

sudo add-apt-repository ppa:ubuntu-toolchain-r/test &&\
sudo apt-get update &&\
sudo apt-get upgrade &&\
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 60 --slave /usr/bin/g++ g++ /usr/bin/g++-5

Install dependency package

sudo apt-get install -y autoconf automake libtool &&\
sudo apt-get install -y autoconf-archive &&\
sudo apt-get install -y pkg-config &&\
sudo apt-get install -y libpng12-dev &&\
sudo apt-get install -y libjpeg8-dev &&\
sudo apt-get install -y libtiff5-dev &&\
sudo apt-get install -y zlib1g-dev &&\
sudo apt-get install -y libicu-dev &&\
sudo apt-get install -y libpango1.0-dev &&\
sudo apt-get install -y libcairo2-dev

Install Leptonica 1.74

Install it from source code

  1. Download the source code from Leptonica

  2. Following the instructions to install it.

    sudo tar xf leptonica-1.74.tar.gz &&\
cd leptonica-1.74 &&\
sudo ./configure &&\
sudo make &&\
sudo make install

Install it from Unofficial Ubuntu PPAs

sudo add-apt-repository ppa:alex-p/tesseract-ocr &&\
sudo apt-get update &&\
sudo apt-get install -y libleptonica-dev &&\
sudo ldconfig

Install Tesseract 4.0

  1. Checkout code from Github

  2. Compiling it and install it.

    sudo sh autogen.sh  &&\
./configure  &&\
LDFLAGS="-L/usr/local/lib" CFLAGS="-I/usr/local/include" make  &&\
sudo make install  &&\
sudo make install -langs  &&\
sudo ldconfig
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