ubuntu12中opencv安装，官方

操作之前请确保你的ubuntu系统的源是正确的，可以到http://wiki.ubuntu.org.cn/源列表#Precise.2812.04.29.E7.89.88.E6.9C.AC下察看对应你的版本的源，将/etc/apt/source.list替换为对应的源。执行sudo apt-get update

注意此方法适合opencv2.X

• 1.安装build-essential:GCC 4.4.x or later. This can be installed with:

  sudo apt-get install build-essential 
  
  

• 安装CMake 
  

  sudo apt-get install cmake
  

• 安装一些列的库与组件：       方便操作，命令合并如下

• sudo apt-get install libgtk2.0-dev pkg-config python-dev  python-numpy libavcodec-dev libavformat-dev libswscale-dev libdc1394-22  libjpeg-dev libpng-dev libtiff-dev libjasper-dev（最后面的四个包是可选的）
  

• 获得OPENCV源码包

• Building OpenCV from Source Using CMake, Using the Command Line

  Create a temporary directory, which we denote as , where you want to put the generated Makefiles, project files as well the object files and output binaries.

  Enter the and type

  cmake [] 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 () and proceed with:

  make
  sudo make install
  

• sudo ldconfig重新加载系统中使用的库，可以不用重启电脑就可用opencv库了
• 参阅：http://docs.opencv.org/trunk/doc/tutorials/introduction/linux_install/linux_install.html