Session details


Thursday May 04
New Developments in HDRI and Image-Based Lighting for Photoreal Scene Rendering
Paul E. Debevec, Executive Producer/ Graphics Research, University of Southern California
Institute for Creative Technologies

Creating photoreal virtual scenes is often accomplished as a combination of real-world photography and computer-generated imagery. The challenge is to make all of the scene elements appear to have been photographed at the same time, by the same camera, and in the same illumination. This talk will describe recent advances in the efficiency of simulating real-world lighting conditions on computer-generated objects and scenes to achieve realistic lighting consistency. Advanced processes allow photographic scene elements to be accurately rendered under novel lighting conditions. These techniques will be illustrated with several project examples including the short film "The Parthenon" which features a realistic, relightable model of the historic Greek temple derived from laser scanning, natural illumination measurement, and high-resolution digital photography.

Paul Debevec is a research associate professor and the executive producer of graphics research at USC's Institute for Creative Technologies. His 1996 PhD thesis presented an image-based modeling and rendering system for creating virtual cinematography of scenes from photographs, techniques which were later used to create the Academy-Award winning virtual backgrounds in the "The Matrix". Debevec's HDRI techniques for lighting CGI characters with on-set lighting measurements have been used in films such as the X-Men series, the Matrix sequels, and "The Chronicles of Narnia". His recent Light Stage systems allow actors and performances to be synthetically illuminated in postproduction; such techniques were used to create photoreal digital actors for the film "Spider Man 2". Debevec received SIGGRAPH's first Significant New Researcher Award in 2001.

Paul E. Debevec
Executive Producer/ Graphics Research
University of Southern California
Institute for Creative Technologies

The University of Southern California's Institute for Creative Technologies (USC ICT) was founded in 1999 with a charter to foster collaboration between academic research and the entertainment industry to advance the state of the art for realistic virtual experiences in the areas of computer graphics, artificial intelligence, and immersive audio.

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