Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/1896
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dc.contributorDepartment of Electronic and Information Engineering-
dc.creatorCheung, HK-
dc.creatorSiu, WC-
dc.creatorFeng, DD-
dc.creatorCho, KW-
dc.date.accessioned2014-12-11T08:26:48Z-
dc.date.available2014-12-11T08:26:48Z-
dc.identifier.isbn0-7803-8406-7-
dc.identifier.urihttp://hdl.handle.net/10397/1896-
dc.language.isoenen_US
dc.publisherIEEEen_US
dc.rights© 2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_US
dc.rightsThis material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.en_US
dc.subjectImage representationen_US
dc.subjectImage segmentationen_US
dc.subjectImage sequencesen_US
dc.subjectLightingen_US
dc.subjectMotion compensationen_US
dc.subjectMotion estimationen_US
dc.subjectVideo codingen_US
dc.titleA novel illumination compensation scheme for sprite codingen_US
dc.typeConference Paperen_US
dc.description.otherinformationAuthor name used in this publication: Dagan Fengen_US
dc.description.otherinformationCentre for Multimedia Signal Processing, Department of Electronic and Information Engineeringen_US
dc.description.otherinformationRefereed conference paperen_US
dc.identifier.doi10.1109/ICOSP.2004.1441545-
dcterms.abstractA novel illumination compensation scheme for sprite coding is presented in this paper. Inter-frame pixel discrepancy due to the effect of frustrating illumination conditions is one of the major challenges for most correlation-based global motion estimators. Our proposed system employs a lighting compensation technique, by means of some frame division operations, to eliminate the effect of illumination variation before motion estimation is conducted. The background information is then expressed in terms of our proposed mosaic based representation which can efficiently handle sequences involving frustrating illumination condition. This effectively increases the robustness of the global motion estimator. Meanwhile, this allows the normalization of the lighting conditions of each image in the sequence with respect to a particular base frame and gives rise to a sprite image characterized with global illumination homogeneity. Experimental results show that our proposed technique manages to increase the coding efficiency of video sequences which involve a strong variation of lighting conditions (up to 10 dB improvement), and is suitable for the sprite coding application in MPEG-4.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationICSP'04 : 2004 7th International Conference on Signal Processing proceedings : Aug. 31-Sept. 4, 2004, Beijing, China, v. 1, p. 1223-1226-
dcterms.issued2004-
dc.identifier.isiWOS:000227412101082-
dc.identifier.scopus2-s2.0-7744241580-
dc.identifier.rosgroupidr22936-
dc.description.ros2004-2005 > Academic research: refereed > Refereed conference paper-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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