Line Integration for Rendering Heterogeneous Emissive Volumes

dc.contributor.authorSimon, Florianen_US
dc.contributor.authorHanika, Johannesen_US
dc.contributor.authorZirr, Tobiasen_US
dc.contributor.authorDachsbacher, Carstenen_US
dc.contributor.editorZwicker, Matthias and Sander, Pedroen_US
dc.date.accessioned2017-06-19T06:51:14Z
dc.date.available2017-06-19T06:51:14Z
dc.date.issued2017
dc.description.abstractEmissive media are often challenging to render: in thin regions where only few scattering events occur the emission is poorly sampled, while sampling events for emission can be disadvantageous due to absorption in dense regions. We extend the standard path space measurement contribution to also collect emission along path segments, not only at vertices. We apply this extension to two estimators: extending paths via scattering and distance sampling, and next event estimation. In order to do so, we unify the two approaches and derive the corresponding Monte Carlo estimators to interpret next event estimation as a solid angle sampling technique. We avoid connecting paths to vertices hidden behind dense absorbing layers of smoke by also including transmittance sampling into next event estimation. We demonstrate the advantages of our line integration approach which generates estimators with lower variance since entire segments are accounted for. Also, our novel forward next event estimation technique yields faster run times compared to previous next event estimation as it penetrates less deeply into dense volumes.en_US
dc.description.number4
dc.description.sectionheadersMonte Carlo after Coffee
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume36
dc.identifier.doi10.1111/cgf.13228
dc.identifier.issn1467-8659
dc.identifier.pages101-110
dc.identifier.urihttps://doi.org/10.1111/cgf.13228
dc.identifier.urihttps://diglib.eg.org:443/handle/10.1111/cgf13228
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.subjectComputing methodologies
dc.subject
dc.subject> Ray tracing
dc.titleLine Integration for Rendering Heterogeneous Emissive Volumesen_US
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