树莓派——安装opencv、contrib（源安装）

http://blog.youkuaiyun.com/leaves_joe/article/details/67656340

http://blog.youkuaiyun.com/lc_1994/article/details/52971408

http://blog.youkuaiyun.com/xukai871105/article/details/40988101

sudo apt-get update
sudo apt-get upgrade
sudo rpi-update

安装opencv相关安装工具

sudo apt-get install build-essential cmake git pkg-config 

安装图像工具包

sudo apt-get install libjpeg8-dev 
sudo apt-get install libtiff5-dev 
sudo apt-get install libjasper-dev 
sudo apt-get install libpng12-dev 

安装视频I/O包