1.升级一下brew
$ sudo brew update
建议设置系统网络代理，否则升级过程灰常慢
2.安装opencv
$ sudo brew tap homebrew/science
$ sudo brew install opencv
3.在python的搜索PATH下面，添加cv库的软链接
#查看一下opencv安装路径
$ ls -la `brew --prefix`/Cellar/opencv/
$ cd /Library/Python/2.7/site-packages/
$ ln -s `brew --prefix`/Cellar/opencv/2.4.11_1/lib/python2.7/site-packages/cv.py cv.py
$ ln -s `brew --prefix`/Cellar/opencv/2.4.11_1/lib/python2.7/site-packages/cv2.so cv2.so
