Installation in Linux
These steps have been tested for Ubuntu 10.04 but should work with other distros as well.
 
 

  
  
required Packages
  
  
 
   
 
    
 
     
GCC 4.4.x or later
 
     
CMake 2.6 or higher
 
     
Git
 
     
GTK+2.x or higher,including headers (libgtk2.0-dev)
 
     
pkg-config
 
     
Python 2.6 or later and Numpy 1.5 or later with developer packages (python-dev,python-numpy)
 
     
ffmpeg or libav development packages: libavcodec-dev,libavformat-dev,libswscale-dev
 
     
[optional] libtbb2 libtbb-dev
 
     
[optional] libdc1394 2.x
 
     
[optional] libjpeg-dev,libpng-dev,libtiff-dev,libjasper-dev,libdc1394-22-dev
 
    
 
   
 
  
  
  
The packages can be installed using a terminal and the following commands or by using Synaptic Manager:
  
  
 
   
 
    
 
     
 
      
[compiler] sudo apt-get install build-essential
[required] sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
[optional] sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev
 
     
 
    
 
   
 
  
 
 
 
 

  
  
Getting OpenCV Source Code
  
  
You can use the latest stable OpenCV version available in sourceforge or you can grab the latest snapshot from our Git repository.
  
  
 
   
Getting the Latest Stable OpenCV Version
 
   
 
    
Go to our page on Sourceforge;
 
    
Download the source tarball and unpack it.
 
   
 
  
  
  
 
   
Getting the Cutting-edge OpenCV from the Git Repository
 
   
Launch Git client and clone OpenCV repository
 
   
In Linux it can be achieved with the following command in Terminal:
 
   
 
    
 
     
cd ~/<my_working _directory>
git clone https://github.com/opencv/opencv.git
 
    
 
   
 
  
 
 
 
 

  
  
Building OpenCV from Source Using CMake,Using the Command Line
  
  
 
   
Create a temporary directory,which we denote as <cmake_binary_dir>,where you want to put the generated Makefiles,project files as well the object files and output binaries.
 
   
Enter the <cmake_binary_dir> and type
 
    
 
     
 
      
cmake [<some optional parameters>] <path to the OpenCV source directory>
 
     
 
    
For example
 
    
 
     
 
      
cd ~/opencv
mkdir release
cd release
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
 
     
 
    
 
   
Enter the created temporary directory (<cmake_binary_dir>) and proceed with:
 
    
 
     
 
      
make
sudo make install
 
     
 
    
 
  
  
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Note
 
   
Use,without spaces after -D if step 2 do not work.
 
   
If the size of the created library is a critical issue (like in case of an Android build) you can use the  command to get the smallest size as possible. The stripped version appears to be twice as small. However,we do not recommend using this unless those extra megabytes do really matter.