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Hoops: 3D curves as conservative occluders for cell visibility
dc.contributor.author | Brunet Crosa, Pere |
dc.contributor.author | Navazo Álvaro, Isabel |
dc.contributor.author | Rossignac, Jarek |
dc.contributor.author | Saona Vázquez, Carlos Luis |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics |
dc.date.accessioned | 2010-12-31T11:36:38Z |
dc.date.available | 2010-12-31T11:36:38Z |
dc.date.created | 2001-08 |
dc.date.issued | 2001-08 |
dc.identifier.citation | Brunet, P. [et al.]. Hoops: 3D curves as conservative occluders for cell visibility. "Computer graphics forum", Agost 2001, vol. 20, núm. 3, p. C/431-C/442. |
dc.identifier.issn | 0167-7055 |
dc.identifier.uri | http://hdl.handle.net/2117/10867 |
dc.description.abstract | Most 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. |
dc.language.iso | eng |
dc.publisher | North Holland |
dc.subject | Àrees temàtiques de la UPC::Informàtica::Infografia |
dc.subject.lcsh | Three-dimensional imaging |
dc.subject.lcsh | Computational geometry |
dc.subject.other | Convex occluders |
dc.subject.other | Nonplanar nonconvex closed polylines |
dc.subject.other | Three dimensional curves |
dc.subject.other | Hoops |
dc.subject.other | 3D curves |
dc.subject.other | Conservative occluders |
dc.subject.other | Cell-visibility |
dc.subject.other | Visibility culling algorithms |
dc.subject.other | Occluder fusion algorithms |
dc.title | Hoops: 3D curves as conservative occluders for cell visibility |
dc.type | Article |
dc.subject.lemac | Infografia tridimensional |
dc.subject.lemac | Geometria computacional |
dc.contributor.group | Universitat Politècnica de Catalunya. MOVING - Grup de Recerca en Modelatge, Interacció i Visualització en Realitat Virtual |
dc.identifier.doi | 10.1111/1467-8659.00536 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 795845 |
dc.description.version | Postprint (published version) |
local.citation.author | Brunet, P.; Navazo, I.; Rossignac, J.; Saona, C. |
local.citation.publicationName | Computer graphics forum |
local.citation.volume | 20 |
local.citation.number | 3 |
local.citation.startingPage | C/431 |
local.citation.endingPage | C/442 |
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