Skip to Main content Skip to Navigation
Conference papers

A new formulation of differential radiosity and a rendering application

Abstract : Among all the existing realistic lighting methods, the radiosity method is the only one that gives precisely an analytic solution of diffuse light exchanges. The gradient of this solution have been studied but not often used in a context of pure rendering. We present in this article a method to render a surface using the radiosity contour levels. First, we define a differential formulation of the radiosity equation which leads us to a new expression of the gradient of radiosity. We deduce from this general equation a simpler equation of this gradient in the case of a planar surface lighted by a light source reduced to a point. Then we present our method to render planar surfaces using a radial mesh that follows the contour levels of the radiosity. This method is shown to improve the quality of the rendering and decrease the number of vertices used for rendering.
Document type :
Conference papers
Complete list of metadata

Cited literature [3 references]  Display  Hide  Download
Contributor : Venceslas Biri Connect in order to contact the contributor
Submitted on : Wednesday, March 21, 2012 - 5:49:54 PM
Last modification on : Thursday, September 29, 2022 - 2:21:15 PM
Long-term archiving on: : Friday, June 22, 2012 - 2:31:02 AM


Files produced by the author(s)


  • HAL Id : hal-00681561, version 1


Didier Arquès, Venceslas Biri, Olivier Derpierre. A new formulation of differential radiosity and a rendering application. WSCG 2005, Mar 2005, Czech Republic. pp.177-180. ⟨hal-00681561⟩



Record views


Files downloads