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Conference Paper: An object-based compression system for a class of dynamic image-based representations

TitleAn object-based compression system for a class of dynamic image-based representations
Authors
KeywordsDynamic image-based representations
IBR objects
Image-based rending (IBR)
MPEG-4
Object-based compression
Plenoptic videos
Issue Date2005
PublisherS P I E - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xml
Citation
Proceedings Of Spie - The International Society For Optical Engineering, 2005, v. 5960 n. 3, p. 1286-1294 How to Cite?
AbstractThis paper proposes a new object-based compression system for a class of dynamic image-based representations called plenoptic videos (PVs). PVs are simplified dynamic light fields, where the videos are taken at regularly spaced locations along line segments instead of a 2-D plane. The proposed system employs an object-based approach, where objects at different depth values are segmented to improve the rendering quality as in the pop-up light fields. Furthermore, by coding the plenoptic video at the object level, desirable functionalities such as scalability of contents, error resilience, and interactivity with individual IBR objects can be achieved. Besides supporting the coding of the texture and binary shape maps for IBR objects with arbitrary shapes, the proposed system also supports the coding of gray-scale alpha maps as well as geometry information in the form of depth maps to respectively facilitate the matting and rendering of the IBR objects. To improve the coding performance, the proposed compression system exploits both the temporal redundancy and spatial redundancy among the video object streams in the PV by employing disparity-compensated prediction or spatial prediction in its texture, shape and depth coding processes. To demonstrate the principle and effectiveness of the proposed system, a multiple video camera system was built and experimental results show that considerable improvements in coding performance are obtained for both synthetic scene and real scene, while supporting the stated object-based functionalities.
DescriptionS P I E Conference on Visual Communications and Image Processing, Beijing, China, 12-15 July 2005
Persistent Identifierhttp://hdl.handle.net/10722/54038
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorWu, Qen_HK
dc.contributor.authorNg, KTen_HK
dc.contributor.authorChan, SCen_HK
dc.contributor.authorShum, HYen_HK
dc.date.accessioned2009-04-03T07:35:09Z-
dc.date.available2009-04-03T07:35:09Z-
dc.date.issued2005en_HK
dc.identifier.citationProceedings Of Spie - The International Society For Optical Engineering, 2005, v. 5960 n. 3, p. 1286-1294en_HK
dc.identifier.issn0277-786Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/54038-
dc.descriptionS P I E Conference on Visual Communications and Image Processing, Beijing, China, 12-15 July 2005-
dc.description.abstractThis paper proposes a new object-based compression system for a class of dynamic image-based representations called plenoptic videos (PVs). PVs are simplified dynamic light fields, where the videos are taken at regularly spaced locations along line segments instead of a 2-D plane. The proposed system employs an object-based approach, where objects at different depth values are segmented to improve the rendering quality as in the pop-up light fields. Furthermore, by coding the plenoptic video at the object level, desirable functionalities such as scalability of contents, error resilience, and interactivity with individual IBR objects can be achieved. Besides supporting the coding of the texture and binary shape maps for IBR objects with arbitrary shapes, the proposed system also supports the coding of gray-scale alpha maps as well as geometry information in the form of depth maps to respectively facilitate the matting and rendering of the IBR objects. To improve the coding performance, the proposed compression system exploits both the temporal redundancy and spatial redundancy among the video object streams in the PV by employing disparity-compensated prediction or spatial prediction in its texture, shape and depth coding processes. To demonstrate the principle and effectiveness of the proposed system, a multiple video camera system was built and experimental results show that considerable improvements in coding performance are obtained for both synthetic scene and real scene, while supporting the stated object-based functionalities.en_HK
dc.languageengen_HK
dc.publisherS P I E - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xmlen_HK
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineeringen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsVisual Communications and Image Processing. Copyright © S P I E - International Society for Optical Engineering.en_HK
dc.rightsCopyright 2005 Society of Photo-Optical Instrumentation Engineers.This paper was published in S P I E Conference on Visual Communications and Image Processing, Beijing, China, 12-15 July 2005, v. 5960, p. 59603S-1 - 59603S-9 and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may bemade for personal use only. Systematic or multiple reproduction, distribution to multiple locations viaelectronic or other means, duplication of any material in this paper for a fee or for commercial purposes,or modification of the content of the paper are prohibited.en_HK
dc.subjectDynamic image-based representationsen_HK
dc.subjectIBR objectsen_HK
dc.subjectImage-based rending (IBR)en_HK
dc.subjectMPEG-4en_HK
dc.subjectObject-based compressionen_HK
dc.subjectPlenoptic videosen_HK
dc.titleAn object-based compression system for a class of dynamic image-based representationsen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1018-8770&volume=5960&spage=59603S&epage=1 &date=2005&atitle=An+object-based+compression+system+for+a+class+of+dynamic+image-based+representationsen_HK
dc.identifier.emailNg, KT: wktng@hku.hken_HK
dc.identifier.emailChan, SC: ascchan@hkucc.hku.hken_HK
dc.identifier.authorityNg, KT=rp00157en_HK
dc.identifier.authorityChan, SC=rp00094en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1117/12.632666en_HK
dc.identifier.scopuseid_2-s2.0-32544432664en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-32544432664&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume5960en_HK
dc.identifier.issue3en_HK
dc.identifier.spage1286en_HK
dc.identifier.epage1294en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridWu, Q=52763969700en_HK
dc.identifier.scopusauthoridNg, KT=7403178463en_HK
dc.identifier.scopusauthoridChan, SC=13310287100en_HK
dc.identifier.scopusauthoridShum, HY=7006094115en_HK

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