Layered Environment-Map Impostors for Arbitrary Scenes

Stefan Jeschke, Michael Wimmer, Heidrun Schuman, Graphics Interface 2002, Calgary, May 2002 [Paper]


This paper presents a new impostor-based approach to accelerate the rendering of very complex static scenes. The scene is partitioned into viewing regions, and a layered impostor representation is precalculated for each of them. An optimal placement of impostor layers guarantees that our representation is indistinguishable from the original geometry. Furthermore the algorithm exploits common graphics hardware both during preprocessing and rendering. Moreover the impostor representation is compressed using several strategies to cut down on storage space.

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Funding: Austrian Science Foundation under contract no. P-13867-INF
Contact: Stefan Jeschke, Michael Wimmer
in cooperation with Institute of Computer Graphics, University of Rostock
Keywords: virtual environments, walkthroughs, image-based rendering, impostors, environment maps