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From: mcdonald@uxe.cso.uiuc.edu
Newsgroups: comp.graphics
Subject: Re: 3d Computer Generated Holography
Message-ID: <46900037@uxe.cso.uiuc.edu>
Date: 29 Aug 89 16:18:00 GMT
References: <441@ctycal.UUCP>
Lines: 19
Nf-ID: #R:ctycal.UUCP:441:uxe.cso.uiuc.edu:46900037:000:799
Nf-From: uxe.cso.uiuc.edu!mcdonald    Aug 29 11:18:00 1989



>	However, the problem is luckily not so computationally
>intractable as Ms./Mr./Dr. Ingoldsby fears. There are many ways
>to cheat. One of these is that we can dispense quickly with
>vertical parallax: because your eyes are situated horizontally
>(in order to fill out your face, as my colleague Mr. Halle noted),
>most people don't notice if they cannot look over or under objects.

Unfortunately, doing this generates a flat, unlifelike image.
You can't look under or over objects, true, but the subjective 
effect is even worse than that.

In our Illini Union museum room, about 100 yards from my office, 
is presently a large display of holographic art, some real
3D, some 2D-ish. Believe me, the real Ohhhhhhhh's come from the
folks looking at the full 3D transmission ones!!!

Doug McDonald