RGB and YUV Descriptions

RGB Description:
http://en.wikipedia.org/wiki/RGB_color_model

YUV Description + how to convert:
http://en.wikipedia.org/wiki/YUV#Converting_between_Y.27UV_and_RGB

Converting between RBG and YUV, not an easy process!
http://en.wikipedia.org/wiki/YUV#Converting_between_Y.27UV_and_RGB

Luma:
http://en.wikipedia.org/wiki/Luma_(video)

Chrominance:
http://en.wikipedia.org/wiki/Chrominance