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DC poleHodnotaJazyk
dc.contributor.authorWeier, Martin
dc.contributor.authorHinkenjann, André
dc.contributor.authorSlusallek, Philipp
dc.contributor.editorSkala, Václav
dc.date.accessioned2016-01-07T09:43:49Z
dc.date.available2016-01-07T09:43:49Z
dc.date.issued2015
dc.identifier.citationJournal of WSCG. 2015, vol. 23, no. 1, p. 83-90.en
dc.identifier.issn1213–6972 (hardcopy)
dc.identifier.issn1213–6980 (CD-ROM)
dc.identifier.issn1213–6964 (online)
dc.identifier.urihttp://wscg.zcu.cz/WSCG2015/!_2015_Journal_WSCG-No-2.pdf
dc.identifier.urihttp://hdl.handle.net/11025/17157
dc.format8 s.cs
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherVáclav Skala - UNION Agencycs
dc.relation.ispartofseriesJournal of WSCGen
dc.rights© Václav Skala - UNION Agencycs
dc.subjectvizualizacecs
dc.subjectpočítačová grafikacs
dc.subjectsledování paprskucs
dc.subjectúroveň detailůcs
dc.subjectvoxelizacecs
dc.subjectOctreecs
dc.subjectSVOcs
dc.titleA unified triangle/voxel structure for GPUs and its applicationsen
dc.typečlánekcs
dc.typearticleen
dc.rights.accessopenAccessen
dc.type.versionpublishedVersionen
dc.description.abstract-translatedWe present a system that combines voxel and polygonal representations into a single octree acceleration structure that can be used for ray tracing. Voxels are well-suited to create good level-of-detail for high-frequency models where polygonal simplifications usually fail due to the complex structure of the model. However, polygonal descriptions provide the higher visual fidelity. In addition, voxel representations often oversample the geometric domain especially for large triangles, whereas a few polygons can be tested for intersection more quickly. We show how to combine the advantages of both into a unified acceleration structure allowing for blending between the different representations. A combination of both representations results in an acceleration structure that compares well in performance in construction and traversal to current state-of-the art acceleration structures. The voxelization and octree construction are performed entirely on the GPU. Since a single or two non-isolated triangles do not generate severe aliasing in the geometric domain when they are projected to a single pixel, we can stop constructing the octree early for nodes that contain a maximum of two triangles, further saving construction time and storage. In addition, intersecting two triangles is cheaper than traversing the octree deeper. We present three different use-cases for our acceleration structure, from LoD for complex models to a view-direction based approach in front of a large display wall.en
dc.subject.translatedvisualizationen
dc.subject.translatedcomputer graphicsen
dc.subject.translatedray tracingen
dc.subject.translatedlevel of detailen
dc.subject.translatedvoxelizationen
dc.subject.translatedOctreeen
dc.subject.translatedSVOen
dc.type.statusPeer-revieweden
Vyskytuje se v kolekcích:Volume 23, Number 2 (2015)

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  1. DSpace at University of West Bohemia
  2. Publikace ZČU / UWB Publications
  3. Časopisy ZČU / UWB Journals
  4. Journal of WSCG
  5. Volume 23 (2015)
  6. Volume 23, Number 2 (2015)