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Advanced side information creation techniques and framework for Wyner-Ziv video coding

2008-12Journal article Restricted access
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dc.contributor.authorJoao Ascenso
dc.contributor.authorPereira, Fernando
dc.date.accessioned2012-03-22T15:12:04Z
dc.date.available2012-03-22T15:12:04Z
dc.date.issued2008-12
dc.description.abstractRecently, several distributed video coding (DVC) solutions based on the distributed source coding (DSC) paradigm have appeared in the literature. Wyner-Ziv (WZ) video coding, a particular case of DVC where side information is made available at the decoder, enable to achieve a flexible distribution of the computational complexity between the encoder and decoder, promising to fulfill novel requirements from applications such as video surveillance, sensor networks and mobile camera phones. The quality of the side information at the decoder has a critical role in determining the WZ video coding rate-distortion (RD) performance, notably to raise it to a level as close as possible to the RD performance of standard predictive video coding schemes. Towards this target, efficient motion search algorithms for powerful frame interpolation are much needed at the decoder. In this paper, the RD performance of a Wyner-Ziv video codec is improved by using novel, advanced motion compensated frame interpolation techniques to generate the side information. The development of these type of side information estimators is a difficult problem in WZ video coding, especially because the decoder only has available some reference, decoded frames. Based on the regularization of the motion field, novel side information creation techniques are proposed in this paper along with a new frame interpolation framework able to generate higher quality side information at the decoder. To illustrate the RD performance improvements, this novel side information creation framework has been integrated in a transform domain turbo coding based Wyner-Ziv video codec. Experimental results show that the novel side information creation solution leads to better RD performance than available state-of-the-art side information estimators, with improvements up to 2 dB: moreover, it allows outperforming H.264/AVC Intra by up to 3 dB with a lower encoding complexity.por
dc.identifier.citationASCENSO, João; PEREIRA, Fernando – Advanced side information creation techniques and framework for Wyner-Ziv video coding. Journal of Visual Communication and Image Representation. ISSN 1047-3203. Vol. 19, N.º 8 (2008), pp. 600-613.por
dc.identifier.doi10.1016/j.jvcir.2008.06.001
dc.identifier.issn1047-3203
dc.identifier.urihttp://hdl.handle.net/10400.21/1336
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherAcademic Press INC Elsevier Sciencepor
dc.subjectWyner-Ziv video codingpor
dc.subjectDistributed video codingpor
dc.subjectSide information creationpor
dc.subjectFrame interpolationpor
dc.subjectMotion estimationpor
dc.titleAdvanced side information creation techniques and framework for Wyner-Ziv video codingpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceUSApor
oaire.citation.endPage613por
oaire.citation.issue8por
oaire.citation.startPage600por
oaire.citation.titleJournal of Visual Communication and Image Representationpor
oaire.citation.volume19
person.familyNameAscenso
person.familyNamePereira
person.givenNameJoão
person.givenNameFernando
person.identifier.ciencia-id361C-6DEB-6354
person.identifier.orcid0000-0001-9902-5926
person.identifier.orcid0000-0001-7255-369X
person.identifier.ridB-9024-2008
person.identifier.scopus-author-id15845257200
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication08c5791e-8403-40c2-b95c-3865ca87a65b
relation.isAuthorOfPublication7a448068-c78a-4f07-988e-3793c38f0e73
relation.isAuthorOfPublication.latestForDiscovery7a448068-c78a-4f07-988e-3793c38f0e73

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