ubuntu14.04下安装opencv3.0（alpha版本）

搭建编译环境：

sudo apt-get install build-essential

安装依赖库：

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-dev12

下载OpenCV3.0：

mkdir ~/opencv
cd ~/opencv
wget https://github.com/Itseez/opencv/archive/3.0.0-alpha.zip -O opencv-3.0.0-alpha.zip
unzip opencv-3.0.0-alpha.zip

安装opencv：

cd opencv-3.0.0-alpha/
cmake .  # cmake+空格+"."
sudo make
sudo make install
sudo /bin/bash -c 'echo "/usr/local/lib" > /etc/ld.so.conf.d/opencv.conf'
sudo ldconfig

编译samples程序：

cd opencv/opencv-3.0.0-alpha/samples/
sudo cmake .
sudo make -j $(nproc)

运行测试程序：

# 注：使用alpha版本，images在samples/cpp文件夹下
cd cpp/
./cpp-example-facedetect lena.jpg