Hoops: 3D Curves as Conservative Occluders for Cell-Visibility

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dc.contributor.authorBrunet, Pereen_US
dc.contributor.authorNavazo, Isabelen_US
dc.contributor.authorRossignac, Jareken_US
dc.contributor.authorSaona-Vazquez, Carlosen_US
dc.date.accessioned2015-02-16T11:06:11Z
dc.date.available2015-02-16T11:06:11Z
dc.date.issued2001en_US
dc.description.abstractMost visibility culling algorithms require convexity of occluders. Occluder synthesis algorithms attempt to construct large convex occluders inside bulky non-convex sets. Occluder fusion algorithms generate convex occluders that are contained in the umbra cast by a group of objects given an area light. In this paper we prove that convexity requirements can be shifted from the occluders to their umbra with no loss of efficiency, and use this property to show how some special non-planar, non-convex closed polylines that we call "hoops" can be used to compute occlusion efficiently for objects that have no large interior convex sets and were thus rejected by previous approaches.en_US
dc.description.number3en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume20en_US
dc.identifier.doi10.1111/1467-8659.00536en_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages431-442en_US
dc.identifier.urihttps://doi.org/10.1111/1467-8659.00536en_US
dc.publisherBlackwell Publishers Ltd and the Eurographics Associationen_US
dc.titleHoops: 3D Curves as Conservative Occluders for Cell-Visibilityen_US
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