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[BH+01] Exploiting Temporal and Spatial Coherence in Hierarchical Visibility Algorithms

Bittner.sccg01 (In proceedings)
Author(s)	Bittner, Ji&345;í and Havran, Vlastimil
Title	« Exploiting Temporal and Spatial Coherence in Hierarchical Visibility Algorithms »
In	Spring Conference on Computer Graphics (SCCG'01)
Page(s)	213--220
Year	2001
Publisher	IEEE Computer Society
Address	Budmerice, Slovakia

Abstract
We present a series of simple improvements that make use of temporal and spatial coherence in the scope of hierarchical visibility algorithms. The hierarchy updating avoids visibility tests of certain interior nodes of the hierarchy. The visibility propagation algorithm reuses information about visibility of neighbouring spatial regions. finally, the conservative hierarchy updating avoids visibility tests of the hierarchy nodes that are expected to remain visible. We evaluate the presented methods in the context of hierarchical visibility cilling using occlusion trees.

Abstract

We present a series of simple improvements that make use of temporal and spatial coherence in the scope of hierarchical visibility algorithms. The hierarchy updating avoids visibility tests of certain interior nodes of the hierarchy. The visibility propagation algorithm reuses information about visibility of neighbouring spatial regions. finally, the conservative hierarchy updating avoids visibility tests of the hierarchy nodes that are expected to remain visible. We evaluate the presented methods in the context of hierarchical visibility cilling using occlusion trees.

BibTeX code

@inproceedings{Bittner.sccg01,
  author = {Bittner, Ji{\v{r}}{\'{\i}} and Havran, Vlastimil},
  booktitle = {Spring Conference on Computer Graphics (SCCG'01)},
  domains = VR:PERCEPTION,
  title = {Exploiting Temporal and Spatial Coherence in Hierarchical Visibility
           Algorithms},
  address = {Budmerice, Slovakia},
  publisher = {IEEE Computer Society},
  year = 2001,
  pages = {213--220},
}

Documents in the same domains

Root

Virtual Reality/Perception

		[BH+01] Bittner J. et al., "Exploiting Temporal and Spatial Coher..." (2001)
		[CCS+03] Cohen-Or D. et al., "A Survey of Visibility for Walkthrough..." (2003)
		[KL+99] Kuffner J.J. et al., "Fast Synthetic Vision, Memory, and..." (1999)
		[PO+02] Peters C. et al., "A Memory Model for Autonomous Virtual..." (2002)

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