11 search results - page 1 / 3 » Combined Correlated and Importance Sampling in Direct Light ... |
CGF
2004
13 years 4 months ago
2004
This paper presents a general variance reduction method that is a quasi-optimal combination of correlated and importance sampling. The weights of the combination are selected auto...
RT
2005
Springer
13 years 10 months ago
2005
Springer
Image-based representations for illumination can capture complex real-world lighting that is difficult to represent in other forms. Current importance sampling strategies for ima...
CGF
2008
13 years 5 months ago
2008
The visibility function in direct illumination describes the binary visibility over a light source, e.g., an environment map. Intuitively, the visibility is often strongly correla...
JGTOOLS
2006
13 years 4 months ago
2006
This paper addresses the problem of efficiently calculating shadows from environment maps in the context of ray-tracing. Since accurate rendering of shadows from environment maps ...
VC
2008
13 years 4 months ago
2008
Abstract We present an efficient method for importance sampling the product of multiple functions. Our algorithm computes a quick approximation of the product on-the-fly, based on ...