Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/278
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Electronic and Information Engineering | - |
dc.creator | Cheung, HK | - |
dc.creator | Siu, WC | - |
dc.creator | Feng, DD | - |
dc.creator | Wang, Z | - |
dc.date.accessioned | 2014-12-11T08:23:52Z | - |
dc.date.available | 2014-12-11T08:23:52Z | - |
dc.identifier.isbn | 1424414849 | - |
dc.identifier.uri | http://hdl.handle.net/10397/278 | - |
dc.language.iso | en | en_US |
dc.publisher | IEEE | en_US |
dc.rights | © 2008 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.rights | This 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.subject | Motion estimation | en_US |
dc.subject | Video coding | en_US |
dc.subject | Motion compensation | en_US |
dc.subject | Discrete cosine transform | en_US |
dc.subject | H.264 | en_US |
dc.title | Retinex based motion estimation for sequences with brightness variations and its application to H.264 | en_US |
dc.type | Conference Paper | en_US |
dc.description.otherinformation | Dagan Feng | en_US |
dc.description.otherinformation | Refereed conference paper | en_US |
dcterms.abstract | Conventional motion estimation does not take inter-frame brightness variations into consideration, which causes inefficient video coding for sequences involving brightness variations. H.264 provides a specific mode called weighted prediction targeting to improve the coding efficiency for this case. In this paper, we propose a Retinex based motion estimation scheme which effectively removes the inter-frame de-correlation factor resulting from brightness variations. We also propose to use some DCT techniques to generate the Retinex images for both current and reference images and apply conventional motion estimation and compensation procedures for coding. We applied the scheme to the H.264 testing the efficiency in the multiple reference frame motion compensation environment. Experimental results show that our proposed scheme outperforms the H.264 system with weighted prediction enabled. It allows the system to use a smaller number of reference frames for coding, e.g. 2, to achieve a similar (or slightly better) compression efficiency of the H.264 system using 5 reference frames. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | 2008 IEEE International Conference on Acoustics, Speech, and Signal Processing : proceedings : March 30-April 4, 2008, Caesars Palace, Las Vegas, Nevada, U.S.A., p. 1161-1164 | - |
dcterms.issued | 2008 | - |
dc.identifier.scopus | 2-s2.0-51449106055 | - |
dc.identifier.rosgroupid | r38982 | - |
dc.description.ros | 2007-2008 > Academic research: refereed > Refereed conference paper | - |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | OA_IR/PIRA | en_US |
dc.description.pubStatus | Published | en_US |
Appears in Collections: | Conference Paper |
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File | Description | Size | Format | |
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sequence_08.pdf | 398.18 kB | Adobe PDF | View/Open |
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