Global Illumination in Presence of Participating Media with General Properties

Abstract

In the recent years a number of techniques have been devised by computer graphics researchers for rendering participating media like haze, fog, clouds, dust… Due to the complexity of the underlying physics, strong assumptions (isotropy, single scattering, no spontaneous emission…) are often made to make these techniques tractable. In this paper, we propose a method which lifts these assumptions. It relies on the discrete ordinate method and allows light transfer simulation in an environment made up of diffuse objects and participating media.