Publication:
Temporal gradient-domain path tracing

cris.virtual.author-orcid0000-0001-8630-5515
cris.virtualsource.author-orcid5f9a6f42-c2a5-4528-9b4d-1deeeae8d4cc
cris.virtualsource.author-orcid3e8056cf-a386-40b9-a138-32c970810b40
dc.contributor.authorManzi, Marco
dc.contributor.authorKettunen, Markus
dc.contributor.authorDurand, Frédo
dc.contributor.authorZwicker, Matthias
dc.contributor.authorLehtinen, Jaakko
dc.date.accessioned2024-10-25T05:04:32Z
dc.date.available2024-10-25T05:04:32Z
dc.date.issued2016-11
dc.description.abstractWe 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.
dc.description.numberOfPages9
dc.description.sponsorshipInstitut für Informatik (INF)
dc.identifier.doi10.7892/boris.95082
dc.identifier.publisherDOI10.1145/2980179.2980256
dc.identifier.urihttps://boris-portal.unibe.ch/handle/20.500.12422/149586
dc.language.isoen
dc.publisherAssociation for Computing Machinery
dc.relation.ispartofACM transactions on graphics
dc.relation.issn0730-0301
dc.relation.organizationDCD5A442BE92E17DE0405C82790C4DE2
dc.relation.organizationDCD5A442C2AFE17DE0405C82790C4DE2
dc.relation.urlhttp://www.cgg.unibe.ch/publications/temporal-gradient-domain-path-tracing
dc.subject.ddc000 - Computer science, knowledge & systems
dc.subject.ddc500 - Science::510 - Mathematics
dc.titleTemporal gradient-domain path tracing
dc.typearticle
dspace.entity.typePublication
dspace.file.typetext
oaire.citation.issue6
oaire.citation.startPage246
oaire.citation.volume35
oairecerif.author.affiliationInstitut für Informatik (INF)
oairecerif.author.affiliationInstitut für Informatik (INF)
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.contributor.rolecreator
unibe.description.ispublishedpub
unibe.eprints.legacyId95082
unibe.journal.abbrevTitleACM T GRAPHIC
unibe.refereedTRUE
unibe.subtype.articlejournal

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