Cornell University Program of Computer Graphics
Rendering participating media with bidirectional path tracing.Eric P. Lafortune and Yves D. Willems.
In Xavier Pueyo and Peter Schröder, editors, Rendering Techniques '96, pages 91--100. Eurographics, Springer-Verlag, June 1996.
In this paper we show how bidirectional path tracing can be extended to handle global illumination effects due to participating media. The resulting image-based algorithm is computationally expensive but more versatile than previous solutions. It correctly handles multiple scattering in non-homogeneous, anisotropic media in complex illumination situations. We illustrate its specific advantages by means of examples.
This paper is available as a compressed Postscript file LW96.ps.gz (1.9M).