Interactive Stable Ray Tracing

Eurographics DL Repository

Show simple item record Corso, Alessandro Dal en_US Salvi, Marco en_US Kolb, Craig en_US Frisvad, Jeppe Revall en_US Lefohn, Aaron en_US Luebke, David en_US
dc.contributor.editor Vlastimil Havran and Karthik Vaiyanathan en_US 2017-12-06T19:46:57Z 2017-12-06T19:46:57Z 2017
dc.identifier.isbn 978-1-4503-5101-0
dc.identifier.issn 2079-8679
dc.description.abstract Interactive ray tracing applications running on commodity hard- ware can su er from objectionable temporal artifacts due to a low sample count. We introduce stable ray tracing, a technique that improves temporal stability without the over-blurring and ghosting artifacts typical of temporal post-processing lters. Our technique is based on sample reprojection and explicit hole lling, rather than relying on hole- lling heuristics that can compromise image quality. We make reprojection practical in an interactive ray tracing context through the use of a super-resolution bitmask to estimate screen space sample density. We show signi cantly improved temporal stability as compared with supersampling and an existing reprojec- tion techniques. We also investigate the performance and image quality di erences between our technique and temporal antialias- ing, which typically incurs a signi cant amount of blur. Finally, we demonstrate the bene ts of stable ray tracing by combining it with progressive path tracing of indirect illumination. en_US
dc.publisher ACM en_US
dc.subject Computing methodologies
dc.subject Ray tracing
dc.subject Reprojection
dc.subject dynamic scene
dc.subject caching
dc.subject temporal stability
dc.subject GPU
dc.title Interactive Stable Ray Tracing en_US
dc.description.seriesinformation Eurographics/ ACM SIGGRAPH Symposium on High Performance Graphics
dc.description.sectionheaders Real-Time Ray Tracing and Image Reconstruction
dc.identifier.doi 10.1145/3105762.3105769

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