Article on Bayer pattern, and RAW image conversion

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If you've ever wondered about the nitty gritty about how your digital camera detects color, it's done using a red, green, blue checkerboard pattern.  Here's an article by Ting Chen about the mathmatics used for RAW image conversion

http://scien.stanford.edu/class/psych221/projects/99/tingchen/main.htm

Mike