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Intra Predictive Depth Map Coding Using Flexible Block Partitioning

datacite.subject.fosEngenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorLucas, Luis F. R.
dc.contributor.authorWegner, Krzysztof
dc.contributor.authorM. M. Rodrigues, Nuno
dc.contributor.authorPagliari, Carla L.
dc.contributor.authorSilva, Eduardo A. B. da
dc.contributor.authorFaria, Sergio
dc.date.accessioned2025-06-17T17:30:25Z
dc.date.available2025-06-17T17:30:25Z
dc.date.issued2015-07
dc.descriptionArticle number - 7160749
dc.description.abstractA complete encoding solution for efficient intra-based depth map compression is proposed in this paper. The algorithm, denominated predictive depth coding (PDC), was specifically developed to efficiently represent the characteristics of depth maps, mostly composed by smooth areas delimited by sharp edges. At its core, PDC involves a directional intra prediction framework and a straightforward residue coding method, combined with an optimized flexible block partitioning scheme. In order to improve the algorithm in the presence of depth edges that cannot be efficiently predicted by the directional modes, a constrained depth modeling mode, based on explicit edge representation, was developed. For residue coding, a simple and low complexity approach was investigated, using constant and linear residue modeling, depending on the prediction mode. The performance of the proposed intra depth map coding approach was evaluated based on the quality of the synthesized views using the encoded depth maps and original texture views. The experimental tests based on all intra configuration demonstrated the superior rate-distortion performance of PDC, with average bitrate savings of 6%, when compared with the current state-of-the-art intra depth map coding solution present in the 3D extension of a high-efficiency video coding (3D-HEVC) standard. By using view synthesis optimization in both PDC and 3D-HEVC encoders, the average bitrate savings increase to 14.3%. This suggests that the proposed method, without using transform-based residue coding, is an efficient alternative to the current 3D-HEVC algorithm for intra depth map coding.eng
dc.description.sponsorshipThis work was supported by the Fundação para a Ciência e a Tecnologia, Portugal, under grant SFRH/BD/79553/2011, and by the CAPES/Pro-Defesa under grant number 23038.009094/2013-83.
dc.identifier.citationL. F. R. Lucas, K. Wegner, N. M. M. Rodrigues, C. L. Pagliari, E. A. B. da Silva and S. M. M. de Faria, "Intra Predictive Depth Map Coding Using Flexible Block Partitioning," in IEEE Transactions on Image Processing, vol. 24, no. 11, pp. 4055-4068, Nov. 2015, doi: 10.1109/TIP.2015.2456509.
dc.identifier.doi10.1109/tip.2015.2456509
dc.identifier.issn1057-7149
dc.identifier.issn1941-0042
dc.identifier.urihttp://hdl.handle.net/10400.8/13312
dc.language.isoeng
dc.peerreviewedyes
dc.publisherIEEE
dc.relationIMPLICIT INTRA AND INTER PREDICTION FOR VIDEO CODING
dc.relation.hasversionhttps://ieeexplore.ieee.org/document/7160749
dc.relation.ispartofIEEE Transactions on Image Processing
dc.rights.uriN/A
dc.subject3D-HEVC
dc.subjectDepth map coding
dc.subjectdepth modelling
dc.subjectdirectional prediction
dc.subjectflexible block partitioning
dc.subjectintra predictive coding
dc.subjectlinear fitting
dc.subjectView synthesis
dc.titleIntra Predictive Depth Map Coding Using Flexible Block Partitioningeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleIMPLICIT INTRA AND INTER PREDICTION FOR VIDEO CODING
oaire.awardURIhttp://hdl.handle.net/10400.8/13247
oaire.citation.endPage4068
oaire.citation.issue11
oaire.citation.startPage4055
oaire.citation.titleIEEE Transactions on Image Processing
oaire.citation.volume24
oaire.fundingStreamFARH
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameM. M. Rodrigues
person.familyNameFaria
person.givenNameNuno
person.givenNameSergio
person.identifier.ciencia-id8815-4101-28DD
person.identifier.orcid0000-0001-9536-1017
person.identifier.orcid0000-0002-0993-9124
person.identifier.ridC-5245-2011
person.identifier.scopus-author-id7006052345
person.identifier.scopus-author-id14027853900
relation.isAuthorOfPublicationb4ebe652-7f0e-4e67-adb0-d5ea29fc9e69
relation.isAuthorOfPublicationf69bd4d6-a6ef-4d20-8148-575478909661
relation.isAuthorOfPublication.latestForDiscoveryb4ebe652-7f0e-4e67-adb0-d5ea29fc9e69
relation.isProjectOfPublication765a11b3-9224-4846-98cb-fc8b64366b8d
relation.isProjectOfPublication.latestForDiscovery765a11b3-9224-4846-98cb-fc8b64366b8d

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