Real-time shading with filtered importance sampling
Abbreviated Journal Title
Comput. Graph. Forum
REFLECTANCE; Computer Science, Software Engineering
We propose an analysis of numerical integration based on sampling theory, whereby the integration error caused by aliasing is suppressed by pre-filtering. We derive a pre-filter for evaluating the illumination integral yielding filtered importance sampling, a simple GPU-based rendering algorithm for image-based lighting. Furthermore, we extend the algorithm with real-time visibility computation. Free from any pre-computation, the algorithm supports fully dynamic scenes and, above all, is simple to implement.
Computer Graphics Forum
Article; Proceedings Paper
"Real-time shading with filtered importance sampling" (2008). Faculty Bibliography 2000s. 571.