Article View: net.graphics
Article #1502Re: Possible way of anti-aliasing.
From: Steve Miller
Date: Sat, 11 Oct 1986 23:30
Date: Sat, 11 Oct 1986 23:30
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> Ken Turkowski posts a way to analytically anti-alias circles (thanks!), > but claims that this shows that it's possible to anti-alias "curved > surfaces". Unfortunately, flat circles are different from curved > surfaces. To anti-alias the rendition of a curved surface properly, > one must anti-alias any sharp-edged color changes; for example, the > edge of a highlight. A good reference here is "Pyramidal Parametrics," by Lance Williams, Siggraph Proceedings, 1983. Basically, Lance interpolates between pairs of pre-filtered images of spheres, where the images include highlights. Anyone planning to implement this approach should also read "Summed-Area Tables for Texture Mapping," by Franklin Crow, Siggraph Proceedings 1984. -Steve Miller ihnp4!bellcore!bambi!steve
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!rutgers!princeton!allegra!ulysses!bellcore!petrus!magic!science!bambi!steve From: steve@bambi.UUCP (Steve Miller) Newsgroups: net.graphics Subject: Re: Possible way of anti-aliasing. Message-ID: <551@bambi.UUCP> Date: Sat, 11-Oct-86 19:30:12 EDT Article-I.D.: bambi.551 Posted: Sat Oct 11 19:30:12 1986 Date-Received: Sun, 12-Oct-86 02:06:38 EDT References: <280@joevax.UUCP> <265@hoqam.UUCP> <7706@sun.uucp> <109@pixar.UUCP> <1234@turtlevax.UUCP> <1229@megaron.UUCP> Distribution: net Organization: The Fantasy Factory Lines: 15