[comp.sys.amiga] RGB to Hue/Saturation/Luminence

agollum@engr.uky.edu (Kenneth Herron) (06/26/89)

I'm writing a program to convert Amiga IFF images to cross-stitch
patterns  (trying to get my wife interested in the darn thing :-).
Part of the conversion requires averaging the colors of several pixels
and reducing the color table by averaging "close" colors.  The methods
I have in mind for these steps requires the hue, saturation, & luminence
of the colors in question.  Does anyone have the formulas to convert
from RGB to HSL?  Or know of a good algorithm for doing these things?
(more details available on request)

Thanx in advance,
Kenneth Herron