Temporal gradient-domain path tracing

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Manzi, Marco
dc.contributor.author Kettunen, Markus
dc.contributor.author Durand, Frédo
dc.contributor.author Zwicker, Matthias
dc.contributor.author Lehtinen, Jaakko
dc.date.accessioned 2018-02-09T10:06:13Z
dc.date.available 2018-02-09T10:06:13Z
dc.date.issued 2016-11
dc.identifier.citation Manzi , M , Kettunen , M , Durand , F , Zwicker , M & Lehtinen , J 2016 , ' Temporal gradient-domain path tracing ' ACM TRANSACTIONS ON GRAPHICS , vol 35 , no. 6 , 246 , pp. 1-9 . DOI: 10.1145/2980179.2980256 en
dc.identifier.issn 0730-0301
dc.identifier.issn 1557-7368
dc.identifier.other PURE UUID: cfee1c77-6bf4-406a-a02d-0d36ee2ab593
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/temporal-gradientdomain-path-tracing(cfee1c77-6bf4-406a-a02d-0d36ee2ab593).html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/16975469/a246_manzi.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/29989
dc.description.abstract We present a novel approach to improve temporal coherence in Monte Carlo renderings of animation sequences. Unlike other approaches that exploit temporal coherence in a post-process, our technique does so already during sampling. Building on previous gradient-domain rendering techniques that sample finite differences over the image plane, we introduce temporal finite differences and formulate a corresponding 3D spatio-temporal screened Poisson reconstruction problem that is solved over windowed batches of several frames simultaneously. We further extend our approach to include second order, mixed spatio-temporal differences, an improved technique to compute temporal differences exploiting motion vectors, and adaptive sampling. Our algorithm can be built on a gradient-domain path tracer without large modifications. In particular, we do not require the ability to evaluate animation paths over multiple frames. We demonstrate that our approach effectively reduces temporal flickering in animation sequences, significantly improving the visual quality compared to both path tracing and gradient-domain rendering of individual frames. en
dc.format.extent 1-9
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries ACM TRANSACTIONS ON GRAPHICS en
dc.relation.ispartofseries Volume 35, issue 6 en
dc.rights openAccess en
dc.subject.other Computer Graphics and Computer-Aided Design en
dc.subject.other 113 Computer and information sciences en
dc.subject.other Computer science en
dc.title Temporal gradient-domain path tracing en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department University of Bern
dc.contributor.department Department of Computer Science
dc.contributor.department Massachusetts Institute of Technology
dc.contributor.department Professorship Lehtinen J.
dc.subject.keyword Computer Graphics and Computer-Aided Design
dc.subject.keyword 113 Computer and information sciences
dc.subject.keyword Computer science
dc.identifier.urn URN:NBN:fi:aalto-201802091486
dc.identifier.doi 10.1145/2980179.2980256
dc.type.version publishedVersion

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