How to perform edge detection of a bitmap using MFC?

How do I perform edge detection of a bitmap using MFC? I have searched, but I found processes that contained matrices 开发者_StackOverflow中文版which I could not understand.

sobel operator .....the simplest differentiator: http://en.wikipedia.org/wiki/Sobel_operator

You don't. Link to an actual cv library, then read up on the canny edge detector