Guiding Light Trees for Many-Light Direct Illumination

Simple item page
dc.contributor.authorHamann, Ericen_US
dc.contributor.authorJung, Alisaen_US
dc.contributor.authorDachsbacher, Carstenen_US
dc.contributor.editorBabaei, Vahiden_US
dc.contributor.editorSkouras, Melinaen_US
dc.date.accessioned2023-05-03T06:02:50Z
dc.date.available2023-05-03T06:02:50Z
dc.date.issued2023
dc.description.abstractPath guiding techniques reduce the variance in path tracing by reusing knowledge from previous samples to build adaptive sampling distributions. The Practical Path Guiding (PPG) approach stores and iteratively refines an approximation of the incident radiance field in a spatio-directional data structure that allows sampling the incident radiance. However, due to the limited resolution in both spatial and directional dimensions, this discrete approximation is not able to accurately capture a large number of very small lights. We present an emitter sampling technique to guide next event estimation (NEE) with a global light tree and adaptive tree cuts that integrates into the PPG framework. In scenes with many lights our technique significantly reduces the RMSE compared to PPG with uniform NEE, while adding close to no overhead in scenes with few light sources. The results show that our technique can also aid the incident radiance learning of PPG in scenes with difficult visibility.en_US
dc.description.sectionheadersRendering and Simulation
dc.description.seriesinformationEurographics 2023 - Short Papers
dc.identifier.doi10.2312/egs.20231004
dc.identifier.isbn978-3-03868-209-7
dc.identifier.issn1017-4656
dc.identifier.pages17-20
dc.identifier.pages4 pages
dc.identifier.urihttps://doi.org/10.2312/egs.20231004
dc.identifier.urihttps://diglib.eg.org:443/handle/10.2312/egs20231004
dc.publisherThe Eurographics Associationen_US
dc.rightsAttribution 4.0 International License
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCCS Concepts: Computing methodologies → Ray tracing
dc.subjectComputing methodologies → Ray tracing
dc.titleGuiding Light Trees for Many-Light Direct Illuminationen_US
Files
Original bundle
Now showing 1 - 2 of 2
No Thumbnail Available
Name:
017-020.pdf
Size:
1.97 MB
Format:
Adobe Portable Document Format
Download
No Thumbnail Available
Name:
SupplementalDocumentwithPseudocode.pdf
Size:
109.45 KB
Format:
Adobe Portable Document Format
Download
Collections
EG 2023 - Short Papers