OpenCV

OpenCV is a library related to computer vision. It includes routines for, for instance, face detection (among other kinds of patterns). There is a Python Interface.

• http://opencv.willowgarage.com/wiki/
• http://en.wikipedia.org/wiki/OpenCV

Install OpenCV for PYthon on OSX

https://jjyap.wordpress.com/2014/05/24/installing-opencv-2-4-9-on-mac-osx-with-python-support/

Using homebrew.

   brew install homebrew/science/opencv
   brew install python

It's easiest to install a separate version of python from brew to make sure all the pieces work together (there's a problem sometimes with the built-in version of numpy and opencv).