安裝OpenCV 2.4.2
在安裝OpenCV前需要安裝的軟件包有
GCC4.4.X or later，可通過命令sudo apt-get install build-essential安裝
CMake2.6 or later
SVN客戶端
GTK+2.Xor higher, including headers(libgtk2.0-dev)
pkgconfig
Python2.6 or later and Numpy 1.5 or later with developerpackages(python-dev, python-numpy)
ffmpegor libav development packages: libavcodec-dev, libavformat-dev,libswsacle-dev
[可選]libdc13942.x
[可選]libjpeg-dev,libpng-dev, libtiff-dev, libjasper-dev
所有的軟件包都可在終端安裝或者通過Synaptic軟件管理器。
終端安裝依賴項：
sudo apt-get install build-essential libgtk2.0-dev libjpeg-dev libtiff4-dev libjasper-dev libopenexr-dev cmake python-dev python-numpy python-tk libtbb-dev libeigen2-dev yasm libfaac-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev libx264-dev libqt4-dev libqt4-opengl-dev sphinx-common texlive-latex-extra libv4l-dev libdc1394-22-dev libavcodec-dev libavformat-dev libswscale-dev
下載OpenCV
打開網頁：http://sourceforge.net/projects/opencvlibrary
下載安裝包OpenCV-2.4.2.tar.bz2
sudo tar jxvf OpenCV-2.4.2.tar.bz2 -C /usr/local/
cd /usr/local/
sudo mv OpenCV-2.4.2 opencv
cd opencv
mkdir release
cd release
cmake -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -DINSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -DBUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_OPENGL=ON ..
make
sudo make install
安裝後的配置
添加庫的路徑
sudo gedit /etc/ld.so.conf.d/opencv.conf
添加內容
/usr/local/lib
在終端輸入命令
sudo ldconfig
設置環境變量
sudo gedit /etc/bash.bashrc
在文件最後加入以下兩行並保存：
PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH
此時重啓Ubuntu或重新登錄賬戶，使得OpenCV安裝生效。
測試OpenCV自帶例程
編譯程序：
cd /usr/local/opencv/samples/c
chmod +x build_all.sh
./build_all.sh
運行程序：
./facedetect –cascade=”/usr/local/share/OpenCV/haarcascades/haarcascade_frontalface_alt.xml” –scale=1.5 lena.jpg
運行結果如下：
如果安裝失敗可以在參考這篇博客：http://www.cnblogs.com/gaoxiang12/p/4633316.html
安裝ffmpeg-0.11.
安裝環境：
ubuntu 12.04
刪除已安裝的文件，避免衝突
sudo apt-get remove ffmpeg x264
sudo apt-get autoremove
安裝需要的支持
sudo apt-get install make automake g++ bzip2 python unzip patch subversion ruby build-essential git-core checkinstall yasm texi2html libfaac-dev libmp3lame-dev libopencore-amrnb-dev libopencore-amrwb-dev libsdl1.2-dev libtheora-dev libvdpau-dev libvorbis-dev libvpx-dev libx11-dev libxfixes-dev libxvidcore-dev zlib1g-dev
編譯安裝
sudo tar -xvjf ffmpeg-0.11.1.tar.bz2
cd ffmpeg-0.11.1
./configure –enable-gpl –enable-nonfree –enable-version3 –enable-shared –enable-libopencore-amrnb –enable-libopencore-amrwb –enable-libfaac –enable-libmp3lame –enable-libx264 –enable-libxvid –enable-libvpx
make
make install
參考：
http://www.linuxidc.com/Linux/2012-02/54565.htm
http://www.linuxidc.com/Linux/2012-07/66243.htm