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Radiosity

  1. Ruifeng Xu,
  2. Sumanta N. Pattanaik

Published Online: 14 DEC 2007

DOI: 10.1002/9780470050118.ecse527

Wiley Encyclopedia of Computer Science and Engineering

Wiley Encyclopedia of Computer Science and Engineering

How to Cite

Xu, R. and Pattanaik, S. N. 2007. Radiosity. Wiley Encyclopedia of Computer Science and Engineering. .

Author Information

  1. University of Central Florida, Orlando, Florida

Publication History

  1. Published Online: 14 DEC 2007

Abstract

Radiosity is an object-space rendering method that simulates light transport by solving a linear system that describes the light propagation between patches on scene surface. It uses form factor to represent the fraction of light flux that leaves some patch and reaches another patch. The relationship between light sources, form factors, and radiosity distribution on patches is formulated as the radiosity equation, which can be solved using numerical methods. Classic radiosity methods are limited to diffuse surfaces illuminated by diffuse light sources, which have been extended in many ways for higher efficiency and realism.

Keywords:

  • radiosity;
  • form factor;
  • hemicube;
  • Gauss–Seidel;
  • progressive refinement;
  • radiosity equation;
  • scene discretization