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Disparity compensation using geometric transforms

2014-07Comunicação em conferência Acesso restrito
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
datacite.subject.fosCiências Naturais::Ciências da Computação e da Informação
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorMonteiro, Ricardo J. S.
dc.contributor.authorRodrigues, Nuno M. M.
dc.contributor.authorFaria, Sergio M. M.
dc.date.accessioned2026-07-15T08:57:51Z
dc.date.available2026-07-15T08:57:51Z
dc.date.issued2014-07
dc.description.abstractThis paper describes a method to enhance the disparity compensation in 3D-stereo image and video compression algorithms. Disparity compensation is usually performed using a block matching technique between both views, disregarding the various levels of disparity present for objects at different depths in the scene. An alternative coding scheme is proposed, taking advantage of the cameras setup information and the object's depth in the scene, to compensate more complex spatial distortions introduced by the use of convergent cameras. In order to perform a more accurate compensation, the list of reference frames is enriched with additional geometrically transformed images for the most relevant levels of depth in the scene, resulting from projections of one view to another. This scheme can be implemented in any state-of-the-art video codec, as H.264/AVC or HEVC, in order to improve the disparity matching accuracy between views. The experimental results, using HEVC algorithm, show proposed method coding efficiency, both for stereo image and video, presenting bitrate savings up to 4.87% and 2.87%, respectively.eng
dc.identifier.citationMonteiro, R. J. S., Rodrigues, N. M. M., & Faria, S. M. M. (2014). Disparity compensation using geometric transforms. Proceedings of the 9th International Conference on Computer Vision Theory and Applications (VISAPP 2014), Vol. 3, 313-319.
dc.identifier.doi10.1109/3dtv.2014.6874751
dc.identifier.isbn978-989-758-005-5
dc.identifier.urihttp://hdl.handle.net/10400.8/16588
dc.language.isoeng
dc.peerreviewedyes
dc.publisherIEEE
dc.relation.hasversionhttps://www.it.pt/Publications/PaperConference/24484
dc.relation.ispartof2014 3DTV-Conference: The True Vision - Capture, Transmission and Display of 3D Video (3DTV-CON)
dc.relation.ispartofseriesProceedings of the International Conference on Computer Vision Theory and Applications.
dc.rights.uriN/A
dc.subjectDisparity compensation
dc.subjectGeometric transform
dc.subjectVideo coding
dc.titleDisparity compensation using geometric transformseng
dc.typeconference paper
dspace.entity.typePublication
oaire.citation.conferenceDate2014-01
oaire.citation.conferencePlaceLisboa, Portugal
oaire.citation.endPage319
oaire.citation.startPage313
oaire.citation.titleProceedings of the 9th International Conference on Computer Vision Theory and Applications
oaire.citation.volume3
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameM. M. Rodrigues
person.familyNameFaria
person.givenNameNuno
person.givenNameSergio
person.identifier.ciencia-id6917-B121-4E34
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

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