Center for Human Modeling and Simulation

Document Type

Conference Paper

Date of this Version

June 1995

Comments

Postprint version. Presented at the 6th Annual Eurographics Workshop on Rendering, June 1995.
URL: http://cg.cis.upenn.edu/~jnimerof/EGWR6/Framework.html

Abstract

We describe a new framework for efficiently computing and storing global illumination effects for complex, animated environments. The new framework allows the rapid generation of sequences representing any arbitrary path in a "view space" within an environment in which both the viewer and objects move. The global illumination is stored as time sequences of range images at base locations that span the view space. We present algorithms for determining locations for these base images, and the time steps required to adequately capture the effects of object motion. We also present algorithms for computing the global illumination in the base images that exploit spatial and temporal coherence by considering direct and indirect illumination separately. We discuss an initial implementation using the new framework. Results from our implementation demonstrate the efficient generation of multiple tours through a complex space, and a tour of an environment in which objects move.

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Date Posted: 12 September 2007