A Generalised-Mutual-Information-Based Oracle for Hierarchical Radiosity

  • Jaume Rigau
  • Miquel Feixas
  • Mateu Sbert
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4488)

Abstract

One of the main problems in the radiosity method is how to discretise a scene into mesh elements that allow us to accurately represent illumination. In this paper we present a new refinement criterion for hierarchical radiosity based on the continuous and discrete generalised mutual information measures between two patches or elements. These measures, derived from the generalised entropy of of Harvda-Charvát-Tsallis, express the information transfer within a scene. The results obtained improve on the ones based on kernel smoothness and Shannon mutual information.

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Copyright information

© Springer Berlin Heidelberg 2007

Authors and Affiliations

  • Jaume Rigau
    • 1
  • Miquel Feixas
    • 1
  • Mateu Sbert
    • 1
  1. 1.Institut d’Informàtica i Aplicacions, Campus Montilivi P-IV, 17071-GironaSpain

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