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dc.contributor.authorGaitatzes, Athanasiosen
dc.contributor.authorChrysanthou, Yiorgos L.en
dc.contributor.authorPapaioannou, Georgios J.en
dc.creatorGaitatzes, Athanasiosen
dc.creatorChrysanthou, Yiorgos L.en
dc.creatorPapaioannou, Georgios J.en
dc.date.accessioned2019-11-13T10:40:07Z
dc.date.available2019-11-13T10:40:07Z
dc.date.issued2008
dc.identifier.isbn978-80-86943-15-2
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/53964
dc.description.abstractWe present a novel method to accelerate the computation of the visibility function of the lighting equation, in dynamic scenes composed of rigid, non-penetrating objects. The main idea of the technique is to pre-compute for each object in the scene its associated four-dimensional field that describes the visibility in each direction for all positional samples on a sphere around the object, we call this a displacement field. We are able to speed up the calculation of algorithms that trace visibility rays to near real time frame rates. The storage requirements of the technique, amounts from one byte to one bit per ray direction making it particularly attractive to scenes with multiple instances of the same object, as the same cached data can be reused, regardless of the geometric transformation applied to each instance. We suggest an acceleration technique and identify the sampling method that gives the best results based on experimentation.en
dc.source16th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision, WSCG'2008 - In Co-operation with EUROGRAPHICS, Full Papersen
dc.source16th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2008, WSCG'2008en
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-79952905194&partnerID=40&md5=8df15b62f4652f9e54bd0b8fb2e6c5d7
dc.subjectVisualizationen
dc.subjectMathematical transformationsen
dc.subjectUniform distributionen
dc.subjectLightingen
dc.subjectComputer visionen
dc.subjectComputer graphicsen
dc.subjectSpheresen
dc.subjectMetadataen
dc.subjectHemisphereen
dc.subjectIndirect lightingen
dc.subjectPre-computed visibilityen
dc.subjectTracing raysen
dc.subjectVisibilityen
dc.subjectQueriesen
dc.subjectQuery-pointen
dc.titlePresampled visibility for ambient occlusionen
dc.typeinfo:eu-repo/semantics/conferenceObject
dc.description.startingpage17
dc.description.endingpage24
dc.author.faculty002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences
dc.author.departmentΤμήμα Πληροφορικής / Department of Computer Science
dc.type.uhtypeConference Objecten
dc.description.notes<p>Conference code: 89888en
dc.description.notesCited By :5</p>en
dc.contributor.orcidChrysanthou, Yiorgos L. [0000-0001-5136-8890]
dc.gnosis.orcid0000-0001-5136-8890


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