Occluder Shadows for Fast Walkthroughs of Urban Environments.

Peter Wonka, Dieter Schmalstieg
Occluder Shadows for Fast Walkthroughs of Urban Environments.
Computer Graphics Forum, 18(3):51-60, September 1999.
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Also available in Wonka-1998-O2.

Abstract

This paper describes a new algorithm that employs image-based rendering for fast occlusion culling in complex urban environments. It exploits graphics hardware to render and automatically combine a relatively large set of occluders. The algorithm is fast to calculate and therefore also useful for scenes of moderate complexity and walkthroughs with over 20 frames per second. Occlusion is calculated dynamically and does not rely on any visibility precalculation or occluder preselection. Speed-ups of one order of magnitude can be obtained.

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@article{Wonka-1999-Occ,
  title =      "Occluder Shadows for Fast Walkthroughs of Urban
               Environments.",
  author =     "Peter Wonka and Dieter Schmalstieg",
  year =       "1999",
  abstract =   "This paper describes a new algorithm that employs
               image-based rendering for fast occlusion culling in complex
               urban environments. It exploits graphics hardware to render
               and automatically combine a relatively large set of
               occluders. The algorithm is fast to calculate and therefore
               also useful for scenes of moderate complexity and
               walkthroughs with over 20 frames per second. Occlusion is
               calculated dynamically and does not rely on any visibility
               precalculation or occluder preselection. Speed-ups of one
               order of magnitude can be obtained.",
  pages =      "51--60",
  month =      sep,
  number =     "3",
  event =      "EUROGRAPHICS'99",
  issn =       "1067-7055",
  journal =    "Computer Graphics Forum",
  volume =     "18",
  location =   "Milan, Italy",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/1999/Wonka-1999-Occ/",
}