在macosX下安装openCV，usedforpython

ZH:~ zhonghuan$ brew install opencv
==> Downloading https://github.com/Itseez/opencv/archive/2.4.9.tar.gz
######################################################################## 100.0%
curl: (33) HTTP server doesn't seem to support byte ranges. Cannot resume.
==> Trying a full download
######################################################################## 100.0%
==> cmake .. -DCMAKE_INSTALL_PREFIX=/usr/local/Cellar/opencv/2.4.9 -DCMAKE_BUILD
==> make
==> make install
==> Caveats
If you need Python to find the installed site-packages:
  echo '/usr/local/lib/python2.7/site-packages' > ~/Library/Python/2.7/lib/python/site-packages/homebrew.pth
==> Summary

由于编程语言选择的时python。所以，我们得让python知道opencv的存在。这个时候注意观察安装的信息。

当中有这么一句话:

If you need Python to find the installed site-packages:
  echo '/usr/local/lib/python2.7/site-packages' > ~/Library/Python/2.7/lib/python/site-packages/homebrew.pth

所以，我们照着它说的做就好了。在终端中输入：

echo '/usr/local/lib/python2.7/site-packages' > ~/Library/Python/2.7/lib/python/site-packages/homebrew.pth

然后输入：

import cv

import cv2

假设没有问题。则成功安装。