Cornell University Program of Computer Graphics
Validation of the numerical accuracy and efficiency of the hybrid method.Hongsong Li, Fabio Pellacini, Kenneth E. Torrance, and Dhruva Karle.
Technical report PCG-05-04, Program of Computer Graphics, Cornell University, April 2005.
To characterize the accuracy and efficiency of our hybrid Monte Carlo scheme, we devised a set of numerical experiments that compare the newly proposed method with full Monte Carlo simulations as well as the Jensen et al.'s approximation. The results of these tests show that our method produces results whose numerical accuracy is comparable to Monte Carlo simulations at a much lower computational cost. These experiments also show the source of the inaccuracy that Jensen et al.approximation displays when rendering optically-thin materials.
This paper is available as a PDF file LPTK05.pdf (243K).