Ubuntu 12.04下安装OpenCV 2.4.2 和 ffmpeg-0.11.1

安装OpenCV 2.4.2

在安装OpenCV前需要安装的软件包有

GCC4.4.X or later，可通过命令sudo apt-get install build-essential安装

CMake2.6 or later

SVN客户端

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

[可选]libdc13942.x

[可选]libjpeg-dev,libpng-dev, libtiff-dev, libjasper-dev

所有的软件包都可在终端安装或者通过Synaptic软件管理器。
终端安装依赖项：

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

下载OpenCV

打开网页：http://sourceforge.net/projects/opencvlibrary

下载安装包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

安装后的配置

添加库的路径

sudo gedit /etc/ld.so.conf.d/opencv.conf

添加内容

/usr/local/lib

在终端输入命令

sudo ldconfig

设置环境变量

sudo gedit /etc/bash.bashrc

在文件最后加入以下两行并保存：

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH
此时重启Ubuntu或重新登录账户，使得OpenCV安装生效。

测试OpenCV自带例程

编译程序：

cd /usr/local/opencv/samples/c

chmod +x build_all.sh
./build_all.sh

运行程序：

./facedetect –cascade=”/usr/local/share/OpenCV/haarcascades/haarcascade_frontalface_alt.xml” –scale=1.5 lena.jpg
运行结果如下：

如果安装失败可以在参考这篇博客：http://www.cnblogs.com/gaoxiang12/p/4633316.html

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安装ffmpeg-0.11.

安装环境：

ubuntu 12.04

删除已安装的文件，避免冲突

sudo apt-get remove ffmpeg x264

sudo apt-get autoremove

安装需要的支持

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

编译安装

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

参考：

http://www.linuxidc.com/Linux/2012-02/54565.htm
http://www.linuxidc.com/Linux/2012-07/66243.htm

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