Primary Sample Space Path Guiding

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dc.contributor.authorGuo, Jerry Jinfengen_US
dc.contributor.authorBauszat, Pabloen_US
dc.contributor.authorBikker, Jaccoen_US
dc.contributor.authorEisemann, Elmaren_US
dc.contributor.editorJakob, Wenzel and Hachisuka, Toshiyaen_US
dc.date.accessioned2018-07-01T07:32:56Z
dc.date.available2018-07-01T07:32:56Z
dc.date.issued2018
dc.description.abstractGuiding path tracing in light transport simulation has been one of the practical choices for variance reduction in production rendering. For this purpose, typically structures in the spatial-directional domain are built. We present a novel scheme for unbiased path guiding. Different from existing methods, we work in primary sample space. We collect records of primary samples as well as the luminance that the resulting path contributes and build a multiple dimensional structure, from which we derive random numbers that are fed into the path tracer. This scheme is executed completely outside the rendering kernel. We demonstrate that this method is practical and efficient. We manage to reduce variance and zero radiance paths by only working in the primary sample space.en_US
dc.description.sectionheadersRendering Techniques II
dc.description.seriesinformationEurographics Symposium on Rendering - Experimental Ideas & Implementations
dc.identifier.doi10.2312/sre.20181174
dc.identifier.isbn978-3-03868-068-0
dc.identifier.issn1727-3463
dc.identifier.pages73-82
dc.identifier.urihttps://doi.org/10.2312/sre.20181174
dc.identifier.urihttps://diglib.eg.org:443/handle/10.2312/sre20181174
dc.publisherThe Eurographics Associationen_US
dc.subjectComputing methodologies
dc.subjectRay tracing
dc.titlePrimary Sample Space Path Guidingen_US
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Rendering - Experimental Ideas & Implementations 2018