Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!tektronix!reed!bob
From: bob@reed.UUCP (Mythical Bob Ankeney)
Newsgroups: comp.graphics
Subject: Re: 3-D perceptual abilities
Message-ID: <11981@reed.UUCP>
Date: 2 Mar 89 17:01:08 GMT
References: <2493@masada.cs.swarthmore.edu> <238@anselm.UUCP>
Reply-To: bob@reed.UUCP (Mythical Bob Ankeney)
Organization: Reed College, Portland OR
Lines: 27

In article <238@anselm.UUCP> pfarrell@anselm.UUCP (Gladiator) writes:
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>Here is an interesting thought. If there were no shadows everything
>would look completely flat. Anybody agree or disagree with
>that statement?
>-- 

     I would have to disagree.  There are a number of factors in depth
perception.  Eye convergence is probably the strongest, for objects
that are relatively close.  Other depth cues are available for objects
farther away (mostly learned, like known objects in front of other
objects).  I would agree that shadows are very important.  Ever notice
how flat things look at noon with the sun straight overhead as opposed
to when shadows are being cast?  (I really notice this looking at a
forest).

	Bob Ankeney
	bob@reed.BITNET

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"You can't argue with a sick mind."

Bob Ankeney  ...!tektronix!reed!bob or bob@reed.BITNET