ubuntu14.04安装opencv3.0

1. sudo apt-get update 
   sudo apt-get upgrade

2. 搭建C/C++编译环境：

   sudo apt-get install build-essential

   安装关联库：

   sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

   sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

3. http://yunpan.cn/cQDsTcyKwfdxR （提取码：1a4b）

4. 下载后解压，进入opencv-3.0.0-beta中，键入如下命令：

   cmake .

   sudo make

   sudo make install

   sudo /bin/bash -c 'echo "/usr/local/lib" > /etc/ld.so.conf.d/opencv.conf'
   sudo ldconfig

5. 切换到OpenCV3.0的samples目录下面，并编译samples程序

   cd opencv/opencv-3.0.0-beta/samples/
   sudo cmake .
   sudo make -j4
   cd cpp/
   ./cpp-example-facedetect

   会自动打开笔记本上的摄像头捕捉人脸.