A contour-based approach to binary shape coding using a multiple grid chain code

This paper presents a contour-based approach to efficiently code binary shape information in the context of object-based video coding. This approach meets some of the most important requirements identified for the MPEG-4 standard, notably efficient coding and low delay. The proposed methods support...

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Detalles Bibliográficos
Autores: Nunes, P, Marqués Acosta, Fernando|||0000-0001-8311-1168, Pereira, F, Gasull Llampallas, Antoni|||0000-0003-3283-6892
Tipo de recurso: artículo
Fecha de publicación:2000
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/89016
Acceso en línea:https://hdl.handle.net/2117/89016
https://dx.doi.org/10.1016/S0923-5965(99)00041-7
Access Level:acceso abierto
Palabra clave:MPEG (Video coding standard)
Shape coding
Contour coding
Hexagonal grid
Multiple grid chain code
Motion estimation/compensation
Object-based video coding
Estàndard MPEG
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament de la imatge i del senyal vídeo
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oai_identifier_str oai:upcommons.upc.edu:2117/89016
network_acronym_str ES
network_name_str España
repository_id_str
spelling A contour-based approach to binary shape coding using a multiple grid chain codeNunes, PMarqués Acosta, Fernando|||0000-0001-8311-1168Pereira, FGasull Llampallas, Antoni|||0000-0003-3283-6892MPEG (Video coding standard)Shape codingContour codingHexagonal gridMultiple grid chain codeMotion estimation/compensationObject-based video codingEstàndard MPEGÀrees temàtiques de la UPC::Enginyeria de la telecomunicacióÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament de la imatge i del senyal vídeoThis paper presents a contour-based approach to efficiently code binary shape information in the context of object-based video coding. This approach meets some of the most important requirements identified for the MPEG-4 standard, notably efficient coding and low delay. The proposed methods support both object-based lossless and quasi-lossless coding modes. For the cases where low delay is a primary requirement, a macroblock-based coding mode is proposed which can take advantage of inter-frame coding to improve the coding efficiency. The approach presented here relies on a grid different from that used for the pixels to represent the shape – the hexagonal grid – which simplifies the task of contour coding. Using this grid, an appraoch based on a differential chain code (DCC) is proposed for the lossless mode while, for the quasi-lossless case, an approach based on the multiple grid chain code (MGCC) principle is proposed. The MGCC combines both contour simplification and contour prediction to reduce the number of bits needed to code the shapes. Results for alpha plane coding of MPEG-4 video test sequences are presented in order to illustrate the performance of the several modes of operation, and a comparison is made with the shape-coding tool chosen by MPEG-4.Peer Reviewed20002000-05-0120162016-07-21journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/89016https://dx.doi.org/10.1016/S0923-5965(99)00041-7reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2http://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/890162026-05-27T15:37:01Z
dc.title.none.fl_str_mv A contour-based approach to binary shape coding using a multiple grid chain code
title A contour-based approach to binary shape coding using a multiple grid chain code
spellingShingle A contour-based approach to binary shape coding using a multiple grid chain code
Nunes, P
MPEG (Video coding standard)
Shape coding
Contour coding
Hexagonal grid
Multiple grid chain code
Motion estimation/compensation
Object-based video coding
Estàndard MPEG
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament de la imatge i del senyal vídeo
title_short A contour-based approach to binary shape coding using a multiple grid chain code
title_full A contour-based approach to binary shape coding using a multiple grid chain code
title_fullStr A contour-based approach to binary shape coding using a multiple grid chain code
title_full_unstemmed A contour-based approach to binary shape coding using a multiple grid chain code
title_sort A contour-based approach to binary shape coding using a multiple grid chain code
dc.creator.none.fl_str_mv Nunes, P
Marqués Acosta, Fernando|||0000-0001-8311-1168
Pereira, F
Gasull Llampallas, Antoni|||0000-0003-3283-6892
author Nunes, P
author_facet Nunes, P
Marqués Acosta, Fernando|||0000-0001-8311-1168
Pereira, F
Gasull Llampallas, Antoni|||0000-0003-3283-6892
author_role author
author2 Marqués Acosta, Fernando|||0000-0001-8311-1168
Pereira, F
Gasull Llampallas, Antoni|||0000-0003-3283-6892
author2_role author
author
author
dc.subject.none.fl_str_mv MPEG (Video coding standard)
Shape coding
Contour coding
Hexagonal grid
Multiple grid chain code
Motion estimation/compensation
Object-based video coding
Estàndard MPEG
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament de la imatge i del senyal vídeo
topic MPEG (Video coding standard)
Shape coding
Contour coding
Hexagonal grid
Multiple grid chain code
Motion estimation/compensation
Object-based video coding
Estàndard MPEG
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament de la imatge i del senyal vídeo
description This paper presents a contour-based approach to efficiently code binary shape information in the context of object-based video coding. This approach meets some of the most important requirements identified for the MPEG-4 standard, notably efficient coding and low delay. The proposed methods support both object-based lossless and quasi-lossless coding modes. For the cases where low delay is a primary requirement, a macroblock-based coding mode is proposed which can take advantage of inter-frame coding to improve the coding efficiency. The approach presented here relies on a grid different from that used for the pixels to represent the shape – the hexagonal grid – which simplifies the task of contour coding. Using this grid, an appraoch based on a differential chain code (DCC) is proposed for the lossless mode while, for the quasi-lossless case, an approach based on the multiple grid chain code (MGCC) principle is proposed. The MGCC combines both contour simplification and contour prediction to reduce the number of bits needed to code the shapes. Results for alpha plane coding of MPEG-4 video test sequences are presented in order to illustrate the performance of the several modes of operation, and a comparison is made with the shape-coding tool chosen by MPEG-4.
publishDate 2000
dc.date.none.fl_str_mv 2000
2000-05-01
2016
2016-07-21
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/89016
https://dx.doi.org/10.1016/S0923-5965(99)00041-7
url https://hdl.handle.net/2117/89016
https://dx.doi.org/10.1016/S0923-5965(99)00041-7
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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