Occluder shadows for fast walkthroughs of urban environments

Peter Wonka, Dieter Schmalstieg

Research output: Contribution to journalConference articlepeer-review

28 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)51-60
Number of pages10
JournalComputer Graphics Forum
Issue number3
StatePublished - 1999
Externally publishedYes
EventProceedings of the 1999 20th Annual Conference of the European Association for Computer Graphics, EUROGRAPHICS '99 - Milano, Italy
Duration: Sep 7 1999Sep 11 1999

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design


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