Parallel Multiple-Bounce Irradiance Caching

dc.contributor.authorJones, Nathaniel L.en_US
dc.contributor.authorReinhart, Christoph F.en_US
dc.contributor.editorElmar Eisemann and Eugene Fiumeen_US
dc.date.accessioned2016-06-17T14:09:27Z
dc.date.available2016-06-17T14:09:27Z
dc.date.issued2016en_US
dc.description.abstractBuilding designers rely on predictive rendering techniques to design naturally and artificially lit environments. However, despite decades of work on the correctness of global illumination rendering techniques, our ability to accurately predict light levels in buildings-and to do so in a short time frame as part of an iterative design process-remains limited. In this paper, we present a novel approach to parallelizing construction of an irradiance cache over multiple-bounce paths. Relevant points for irradiance calculation based on one or multiple cameras are located by tracing rays through multiple-bounce paths. Irradiance values are then saved to a cache in reverse bounce order so that the irradiance calculation at each bounce samples from previously calculated values. We show by comparison to high-dynamic range photography of a moderately complex space that our method can predict luminance distribution as accurately as RADIANCE, the most widely validated tool used today for architectural predictive rendering of daylit spaces, and that it is faster by an order of magnitude.en_US
dc.description.number4en_US
dc.description.sectionheadersLight Transport - Part 1en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume35en_US
dc.identifier.doi10.1111/cgf.12949en_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages057-066en_US
dc.identifier.urihttps://doi.org/10.1111/cgf.12949en_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.subjectRenderingen_US
dc.subjectGlobal Illuminationen_US
dc.titleParallel Multiple-Bounce Irradiance Cachingen_US
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