Guest lecture

Associate professor Tomas Akenine-Möller (Department of Computer Science, Lund University, Sweden) will give a guest lecture about Precomputed Local Radiance Transfer.

Time: Thursday, November 3, at 1 PM
Place: Auditorium A (Department of Information Technology, University of Turku, 2nd floor, DataCity)

Title: Precomputed Local Radiance Transfer

Abstract: During the last few years, precomputed radiance transfer (PRT) techniques have researched heavily, and the algorithms have been used in real-time games, and other places where high-quality lighting is desired. The lecture will start with some background on PRT, and then present a new method for real-time relighting of scenes illuminated by local light sources. We extend previous work on precomputed radiance transfer for distant lighting to local lighting by introducing the concept of unstructured light clouds. The unstructured light cloud enables a compact representation of local lights in the model and real-time rendering of complex models with full global illumination due to local light sources. We use simplification of lights, and clustered PCA to obtain a compressed representation. When storing only the indirect component of the illumination, we are able to get high quality with only 8--16 lighting coefficients per vertex. Our results demonstrate real-time rendering of scenes with moving lights, dynamic cameras, glossy materials and global illumination.

All interested are welcome!