Accurate Visibility and Meshing Calculations for Hierarchical Radiosity

George Drettakis 1, * François X. Sillion 1
* Auteur correspondant
1 iMAGIS - Models, Algorithms and Geometry for Computer Generated Image Graphics
GRAVIR - IMAG - Graphisme, Vision et Robotique, Inria Grenoble - Rhône-Alpes
Abstract : Precise quality control for hierarchical lighting simulations is still a hard problem, due in part to the difficulty of analysing the source of error and to the close interactions between different components of the algorithm. In this paper we attempt to address this issue by examining two of the most central components of these algorithms: visibility computation and the mesh. We first present an investigation tool in the form of a new hierarchical algorithm: this algorithmic extension encapsulates exact visibility information with respect to the light source in the form of the backprojection data structure, and allows the use of discontinuity meshes in the solution hierarchy. This tool permits us to study separately the effects of visibility and meshing error on image quality, computational expense as well as solution convergence. Initial experimental results are presented by comparing standard quadtree-based hierarchical radiosity with point-sampling visibility to the approaches incorporating backprojections, discontinuity meshes or both.
Type de document :
Communication dans un congrès
X. Pueyo and P. Shröder. Proceedings of 7th Eurographics Workshop on Rendering (Rendering Techniques '96), 1996, Porto, Portugal. Springer Verlag, pp.269--279, 1996
Liste complète des métadonnées

Littérature citée [21 références]  Voir  Masquer  Télécharger

https://hal.inria.fr/inria-00510111
Contributeur : Team Evasion <>
Soumis le : mardi 17 août 2010 - 15:16:47
Dernière modification le : jeudi 11 janvier 2018 - 06:20:04
Document(s) archivé(s) le : jeudi 18 novembre 2010 - 03:07:16

Fichiers

DrettakisSillion96.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : inria-00510111, version 1

Collections

INRIA | UGA | IMAG

Citation

George Drettakis, François X. Sillion. Accurate Visibility and Meshing Calculations for Hierarchical Radiosity. X. Pueyo and P. Shröder. Proceedings of 7th Eurographics Workshop on Rendering (Rendering Techniques '96), 1996, Porto, Portugal. Springer Verlag, pp.269--279, 1996. 〈inria-00510111〉

Partager

Métriques

Consultations de la notice

142

Téléchargements de fichiers

139