Bi-Directional Path Tracing

Eric P. Lafortune and Yves D. Willems

Proceedings of Compugraphics '93, Alvor, Portugal (December '93), pp. 145-153.

In this paper we present a new Monte Carlo rendering algorithm that seamlessly integrates the ideas of shooting and gathering power to create photorealistic images. The algorithm can be explained as a generalisation of the well-known path tracing algorithm. Test results show that it performs significantly better for typical indoor scenes where indirect lighting is important.

This paper is available on-line as a gzip'ed Postscript file (8 pages, 53 KBytes, expands to 318 KBytes).


This file is maintained by Eric Lafortune (eric@graphics.cornell.edu).