Skip to Main content Skip to Navigation

Radiance Caching for Efficient Global Illumination Computation

Abstract : In this paper we present a ray tracing based method for accelerated global illumination computation in scenes with low-frequency glossy BRDFs. The method is based on sparse sampling, caching, and interpolating radiance on glossy surfaces. In particular we extend the irradiance caching scheme of \cite{ward88ray} to cache and interpolate directional incoming radiance instead of irradiance. The incoming radiance at a point is represented by a vector of coefficients with respect to a spherical or hemispherical basis. The surfaces suitable for interpolation are selected automatically according to the glossiness of their BRDF. We also propose a novel method for computing translational radiance gradient at a point.
Document type :
Complete list of metadata

Cited literature [44 references]  Display  Hide  Download
Contributor : Rapport de Recherche Inria Connect in order to contact the contributor
Submitted on : Friday, May 19, 2006 - 9:27:43 PM
Last modification on : Friday, February 4, 2022 - 3:22:26 AM
Long-term archiving on: : Tuesday, February 22, 2011 - 11:49:16 AM


  • HAL Id : inria-00070734, version 1


Jaroslav Krivánek, Pascal Gautron, Sumanta Pattanaik, Kadi Bouatouch. Radiance Caching for Efficient Global Illumination Computation. [Research Report] RR-5264, INRIA. 2004, pp.17. ⟨inria-00070734⟩



Record views


Files downloads