Skip to Main content Skip to Navigation
Journal articles

Volumetric Vector-based Representation for Indirect Illumination Caching

Romain Pacanowski 1 Xavier Granier 2, 3, 4 Christophe Schlick 2, 3 Poulin Pierre 5
1 lp2n-05
LP2N - Laboratoire Photonique, Numérique et Nanosciences
2 IPARLA - Visualization and manipulation of complex data on wireless mobile devices
CNRS - Centre National de la Recherche Scientifique : UMR5800, École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB), Inria Bordeaux - Sud-Ouest, Université Sciences et Technologies - Bordeaux 1
Abstract : This paper introduces a caching technique based on a volumetric representation that captures low-frequency indirect illumination. This structure is intended for efficient storage and manipulation of illumination. It is based on a 3D grid that stores a fixed set of irradiance vectors. During preprocessing, this representation can be built using almost any existing global illumination software. During rendering, the indirect illumination within a voxel is interpolated from its associated irradiance vectors, and is used as additional local light sources. Compared with other techniques, the 3D vector-based representation of our technique offers increased robustness against local geometric variations of a scene. We thus demonstrate that it may be employed as an efficient and high-quality caching data structure for bidirectional rendering techniques such as particle tracing or Photon Mapping.
Document type :
Journal articles
Complete list of metadata
Contributor : Xavier Granier Connect in order to contact the contributor
Submitted on : Friday, September 10, 2010 - 8:56:06 AM
Last modification on : Thursday, February 11, 2021 - 2:58:35 PM
Long-term archiving on: : Tuesday, October 23, 2012 - 3:50:27 PM


Files produced by the author(s)



Romain Pacanowski, Xavier Granier, Christophe Schlick, Poulin Pierre. Volumetric Vector-based Representation for Indirect Illumination Caching. Journal of Computer Science and Technology, Springer Verlag, 2010, 25 (5), pp.925-932. ⟨10.1007/s11390-010-1073-8⟩. ⟨inria-00505132v1⟩



Record views


Files downloads