Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!pacbell!att-ih!att-cb!clyde!watmath!onfcanim!dave
From: dave@onfcanim.UUCP (Dave Martindale)
Newsgroups: comp.graphics
Subject: Re: Ray Tracing Jell-O Brand Gelatin
Message-ID: <15602@onfcanim.UUCP>
Date: 22 Mar 88 21:30:15 GMT
References: <20312@bu-cs.BU.EDU> <23187@ucbvax.BERKELEY.EDU> <2690@dciem.UUCP> <2311@saturn.ucsc.edu>
Reply-To: dave@onfcanim.UUCP (Dave Martindale)
Organization: National Film Board / Office national du film, Montreal
Lines: 19

In article <2311@saturn.ucsc.edu> skinner@saturn.ucsc.edu (Robert Skinner) writes:
>> You will never get Luxo Jr. quality with this approach. ...
>> (you need AT LEAST 1k x 1k resolution, preferrable 2k x 2k or even
>> 4k x 4k, 
>
>For your information:  If you check the '87 Siggraph proceedings, 
>page 100, Cook, Carpenter, and Catmull say:
>	"Luxo frames rendered at 724x434 ..."

Well, that's part of the story.  They were rendered at relatively low
resolution with Really Good antialiasing, and then interpolated up to
about 3000 pixels across for recording on film using the ILM/Lucasfilm
laser film recorder.  I assume that the interpolation was done with
bicubic interpolation, which apparently runs pretty fast if you have
Pixars lying around to do it on.

I would be very interested if someone could do a film transfer at
724x434 and get results that looked like Luxo...

	Dave Martindale