Using A-Buffer in Radiosity

Q. Wang, J. H. Tang, C. H. Lim, H. C. Teh, Z. Huang

Research output: Contribution to conferencePaperpeer-review


Anti-aliasing in form factor computation and precise determination of shadow boundaries are important issues for Radiosity method. A-Buffer is a technique introduced by Carpenter for anti-aliasing in hidden surface removal. In this paper, we propose a method based on the A-Buffer to replace the Z-buffer in the computation of form factors using the Hemicube for anti-aliasing. The method directly computes shadow boundaries in contrast to the adaptive re-meshing approach. Though the processing of shadow boundaries is not fast, only one discontinuity meshing (no iteration) is required. We implement the method in an infrastructure building design system.

Original languageEnglish
Number of pages8
Publication statusPublished - 2001
Externally publishedYes
EventComputer Graphics International 2001 - Hong Kong, Japan
Duration: 3 Jun 20016 Jul 2001


ConferenceComputer Graphics International 2001
CityHong Kong


  • A-Buffer
  • Anti-aliasing
  • Radiosity
  • Shadow boundary

ASJC Scopus subject areas

  • Software
  • Computer Graphics and Computer-Aided Design


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