Rendering participating media with bidirectional path tracing.

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).