Improved Half Vector Space Light Transport

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dc.contributor.authorHanika, Johannesen_US
dc.contributor.authorKaplanyan, Antonen_US
dc.contributor.authorDachsbacher, Carstenen_US
dc.contributor.editorJaakko Lehtinen and Derek Nowrouzezahraien_US
dc.date.accessioned2015-06-23T04:48:02Z
dc.date.available2015-06-23T04:48:02Z
dc.date.issued2015en_US
dc.description.abstractIn this paper, we present improvements to half vector space light transport (HSLT) [KHD14], which make this approach more practical, robust for difficult input geometry, and faster. Our first contribution is the computation of half vector space ray differentials in a different domain than the original work. This enables a more uniform stratification over the image plane during Markov chain exploration. Furthermore, we introduce a new multi chain perturbation in half vector space, which, if combined appropriately with half vector perturbation, makes the mutation strategy both more robust to geometric configurations with fine displacements and faster due to reduced number of ray casts. We provide and analyze the results of improved HSLT and discuss possible applications of our new half vector ray differentials.en_US
dc.description.number4en_US
dc.description.sectionheadersLight Pathsen_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume34en_US
dc.identifier.doi10.1111/cgf.12679en_US
dc.identifier.pages065-074en_US
dc.identifier.urihttps://doi.org/10.1111/cgf.12679en_US
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.subjectI.3.7 [Computer Graphics]en_US
dc.subjectThree Dimensional Graphics and Realismen_US
dc.subjectRaytracingen_US
dc.titleImproved Half Vector Space Light Transporten_US
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34-Issue 4
EGSR15: 26th Eurographics Symposium on Rendering