Newsgroups: comp.graphics.visualization Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!cunixf.cc.columbia.edu!cs.columbia.edu!maguire From: maguire@cs.columbia.edu (Gerald Q. Maguire) Subject: Re: Perceptually equidistant color scale In-Reply-To: lipman@dtrc.dt.navy.mil's message of 26 Mar 91 21:05:04 GMT Message-ID: Sender: maguire@cs.columbia.edu (Gerald Q. Maguire) Organization: Columbia University Department of Computer Science References: <6628@oasys.dt.navy.mil> Date: 27 Mar 91 17:41:35 See the paper in the SPIE proceedings (and several other places) about ~1980 by Steve Pizer of the Univ. of North Carolina on generating good color scales. He basically does a psychophysics experiment for each user and determine thes optimal color scale for each user + monitor combination. It turns out that this gives the highest amount of image transfer per pixel - as you have measured the just-noticeable color difference for the image chain in question. He has been doing these sorts of measurements for more than a decade - so you might want to contact him: smp@cs.unc.edu Chip