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From: wtm@neoucom.UUCP
Newsgroups: comp.sys.amiga,comp.graphics
Subject: Re: Amgia World Ray-tracing article...
Message-ID: <568@neoucom.UUCP>
Date: Tue, 5-May-87 10:46:27 EDT
Article-I.D.: neoucom.568
Posted: Tue May  5 10:46:27 1987
Date-Received: Thu, 7-May-87 01:08:16 EDT
Organization: Northeastern Ohio Universities College of Medicine
Lines: 32
Xref: utgpu comp.sys.amiga:4268 comp.graphics:581
Summary: Antialiasing

> > > ... Tom Duff told me that the resolution of that piece [ST2 Genesis demo]
> > > of work was only 512 X 512.  Really.  You can see the pixels on the edge of
> > > the mountains if you try, it's not even hard...
> > 
> > Note that Andre and Wally B. was shot at the same resolution.  And it
> > looks better than most of the stuff people do on n-zillion-pixel film
> > recorders.  "Work smart, not hard."


Since I have a satellite dish, I was able to drop in on the video
conference part of last year's SMPTE meeting.  They had a lot of
really nifty video stuff presented by the guys at Pixar, Industrial
Light & Magic, etc.  I forget exacty who did the presentation on
Wally B., but he showed how they put it together.  It has a lot of
fancy blurring of the motion in adjacent frames to make it appear
more realistic.  It also has antialiasing with jaggies alternating
and use of color gradations aroud the jaggies to make them less
visible.  Much of the computation for Wally B. was done of Vax
11/785s but they borrowed some time on a Cray to finish up, if
memory serves me right.  He said that rendering the blur was the
most computationally instensive aspect of the animation.  I'm
talking about the motion blur, as opposed to removing the jaggies.

The most mind-blowing video was the stained glass man from the
Sherlock Holmes movie.  They used 6 different texture models to
build up a believable stained glass effect.

Bill Mayhew
Division of Basic Medical Science
Northeastern Ohio Universities' College of Medicine
Rootstown, OH  44272  USA    phone:  216-325-2511
(wtm@noeucom.UUCP  ...!cbatt!neoucom!wtm)