Xref: utzoo comp.graphics:6269 comp.sys.amiga:35876
Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!ukma!ukecc!agollum
From: agollum@engr.uky.edu (Kenneth Herron)
Newsgroups: comp.graphics,comp.sys.amiga
Subject: RGB to Hue/Saturation/Luminence
Message-ID: <2922@ukecc.engr.uky.edu>
Date: 25 Jun 89 19:51:37 GMT
Reply-To: agollum@ukecc.UUCP (Kenneth Herron)
Followup-To: comp.graphics
Distribution: usa
Organization: Way down south in the land of Basketball
Lines: 11

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