TBA

AG 2, AG 4, MMCI   Info

AG Audience

English

60 Minutes

Saarbrücken

I'll present two topics I've been working on recently. The first one is a global illumination algorithm that targets complex illumination in occluded environments. It first computes accurate illumination sparsely in the scene at locations seen from the camera. It then exploits this cached information in the form of importance to sample incident illumination from virtual pointlights at other locations. The importance incorporates visibility, allowing for efficient and robust importance sampling without introducing additional bias to the solution. It handles direct and indirect illumination simultaneously and is robust even at sharp discontinuities.

The second topic is about the basics of light path sampling. A new,
mathematically equivalent, formulation of photon mapping in Veach's the path integral framework reveals exciting new insights in path sampling robustness and efficiency. It allows us for the first time to rigorously analyze the photon mapping algorithm and compare it to bidirectional path tracing. The practical result is a framework that elegantly combines the two methods after 15 years of independent co-existance, in order to produce a single unified and efficient solution to both diffuse and specular light transport. This finally solves the long-standing mirror-ball-in-a-diffuse-Cornell-box
problem.

Tobias Ritschel (via Thorsten Thormählen)

+49 681 9325-417

--email hidden

passcode not visible

logged in users only