sudo apt-get update

sudo apt-get upgrade

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

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

cd opencv/opencv-3.0.-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.