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From: "Vihang Patil" <vihang_patil@yahoo.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: machine vision-Color Matching
Date: Mon, 3 Mar 2008 09:45:03 +0000 (UTC)
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ImageAnalyst <imageanalyst@mailinator.com> wrote in 
> For fun, have a look at these illusions:
> http://www.psy.ritsumei.ac.jp/~akitaoka/color-e.html
> particularly the one called "Green and blue spirals"  It 
shows you
> just how deceptive perceived colors can be.
> 
> Check out all the other links at his site too.
> http://www.ritsumei.ac.jp/~akitaoka/index-e.html
> Most of them are quite fun and colorful.
> Regards,
> ImageAnalyst

I intially did not believe my eyes when I looked at 
the "Green and the Blue Spirals". But then I loaded the 
image in Matlab and used impixelinfo over the image just 
to check whether they are really the same, and I am so 
amazed that I have stopped believing on this fact "Seeing 
is Believing". I can keep looking at the image the whole 
day but still, I am not able to tell that they are the 
same color. Simply marvellous.

Meanwhile, I will be posting some of my work on Color 
Matching shortly on FEX, so till then please keep watching 
and/or updating this post with useful comments.
Vihang