Erosion Based Visibility Preprocessing

Xavier Décoret 1 Gilles Debunne 2 François X. Sillion 2
2 ARTIS - Acquisition, representation and transformations for image synthesis
GRAVIR - IMAG - Graphisme, Vision et Robotique, Inria Grenoble - Rhône-Alpes, CNRS - Centre National de la Recherche Scientifique : FR71
Abstract : This paper presents a novel method for computing visibility in 2.5D environments. It is based on a novel theoretical result: the visibility from a region can be conservatively estimated by computing the visibility from a point using appropriately "shrunk" occluders and occludees. We show how approximated but yet conservative shrunk objects can efficiently be computed in a urban environment. The application of this theorem provides a tighter potentially visible set (PVS) than the original method it is built on. Finally, theoretical implications of the theorem are discussed, and we believe it can open new research directions.
Type de document :
Communication dans un congrès
Proceedings of the Eurographics Symposium on Rendering, 2003, Louvain, Belgium. 2003



https://hal.inria.fr/inria-00510177
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Soumis le : mercredi 13 octobre 2010 - 17:29:12
Dernière modification le : jeudi 14 octobre 2010 - 08:46:22
Document(s) archivé(s) le : vendredi 14 janvier 2011 - 02:43:03

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Xavier Décoret, Gilles Debunne, François X. Sillion. Erosion Based Visibility Preprocessing. Proceedings of the Eurographics Symposium on Rendering, 2003, Louvain, Belgium. 2003. <inria-00510177>

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