Fast penumbra calculation in ray tracing

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dc.contributor.authorFormella, Arno
dc.contributor.authorŁukaszewski, Andrzej
dc.contributor.editorSkala, Václav
dc.date.accessioned2015-09-22T12:27:21Z
dc.date.available2015-09-22T12:27:21Z
dc.date.issued1998
dc.description.abstract-translatedPenumbras, or soft shadows, are an important means to enhance the realistic apperance of computer generated images. We present a fast method based on Minkowski operators to reduce the run time for penumbra calculation with stochastic ray tracing. Detailed run time analysis on some examples shows that the new method is significantly faster than the conventional approach. Moreover, it adapts to the environment so that small penumbras are calculated faster than larger ones. The algorithm needs at most twice as much memory as the underlying ray tracing algorithm.en
dc.format8 s.cs
dc.format.mimetypeapplication/pdf
dc.identifier.citationJournal of WSCG. 1998, vol. 6, no. 1-3, p. 238-245.en
dc.identifier.issn1213-6972 (print)
dc.identifier.issn1213-6980 (CD-ROM)
dc.identifier.issn1213-6964 (online)
dc.identifier.urihttp://hdl.handle.net/11025/15859
dc.identifier.urihttp://wscg.zcu.cz/wscg1998/wscg98.htm
dc.language.isoenen
dc.publisherVáclav Skala - UNION Agencycs
dc.relation.ispartofseriesJournal of WSCGen
dc.rights© Václav Skala - UNION Agencycs
dc.rights.accessopenAccessen
dc.subjectvýpočet stínucs
dc.subjectstochastické vykreslovánícs
dc.subjectMinkowského operátořics
dc.subjectofsetycs
dc.subject.translatedshadow calculationen
dc.subject.translatedstochastic ray tracingen
dc.subject.translatedMinkowski operatorsen
dc.subject.translatedoffsetsen
dc.titleFast penumbra calculation in ray tracingen
dc.typečlánekcs
dc.typearticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen

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Volume 6, number 1-3 (1998)