Video coding by applying the extension of EZW to 3D and the lifting scheme

Detalhes bibliográficos
Autor(a) principal: Salvado, José
Data de Publicação: 2002
Outros Autores: Sousa, Leonel
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: http://hdl.handle.net/10400.11/107
Resumo: This paper proposes a video codec based on the discrete wavelet transform (DWT). The video sequences are first splitted in groups of frames(GOF). Each GOF is then decomposed in the time domain, and in the spatial domain (for each frame) by applying the DWT. We use the lifting scheme to compute the DWT coefficients. The coefficients of the 3D structure resulting from both DWT (in time and space domain) are than coded througth the extension of EZW coding to 3D and the bitstream is finnaly passed through a Huffman coder, to achieve better compression ratios. The structure of the video codec and some experimental results are presented. Experimental results evaluate the quality of the codec images and compression ratio achieved with the proposed codec.
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spelling Video coding by applying the extension of EZW to 3D and the lifting schemeLifting schemeVideo codingWavelet transformThis paper proposes a video codec based on the discrete wavelet transform (DWT). The video sequences are first splitted in groups of frames(GOF). Each GOF is then decomposed in the time domain, and in the spatial domain (for each frame) by applying the DWT. We use the lifting scheme to compute the DWT coefficients. The coefficients of the 3D structure resulting from both DWT (in time and space domain) are than coded througth the extension of EZW coding to 3D and the bitstream is finnaly passed through a Huffman coder, to achieve better compression ratios. The structure of the video codec and some experimental results are presented. Experimental results evaluate the quality of the codec images and compression ratio achieved with the proposed codec.Repositório Científico do Instituto Politécnico de Castelo BrancoSalvado, JoséSousa, Leonel2010-01-14T12:21:06Z20022002-01-01T00:00:00Zconference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10400.11/107eng972-789-067-9info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-02-26T14:18:35Zoai:repositorio.ipcb.pt:10400.11/107Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T21:33:02.688555Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Video coding by applying the extension of EZW to 3D and the lifting scheme
title Video coding by applying the extension of EZW to 3D and the lifting scheme
spellingShingle Video coding by applying the extension of EZW to 3D and the lifting scheme
Salvado, José
Lifting scheme
Video coding
Wavelet transform
title_short Video coding by applying the extension of EZW to 3D and the lifting scheme
title_full Video coding by applying the extension of EZW to 3D and the lifting scheme
title_fullStr Video coding by applying the extension of EZW to 3D and the lifting scheme
title_full_unstemmed Video coding by applying the extension of EZW to 3D and the lifting scheme
title_sort Video coding by applying the extension of EZW to 3D and the lifting scheme
author Salvado, José
author_facet Salvado, José
Sousa, Leonel
author_role author
author2 Sousa, Leonel
author2_role author
dc.contributor.none.fl_str_mv Repositório Científico do Instituto Politécnico de Castelo Branco
dc.contributor.author.fl_str_mv Salvado, José
Sousa, Leonel
dc.subject.por.fl_str_mv Lifting scheme
Video coding
Wavelet transform
topic Lifting scheme
Video coding
Wavelet transform
description This paper proposes a video codec based on the discrete wavelet transform (DWT). The video sequences are first splitted in groups of frames(GOF). Each GOF is then decomposed in the time domain, and in the spatial domain (for each frame) by applying the DWT. We use the lifting scheme to compute the DWT coefficients. The coefficients of the 3D structure resulting from both DWT (in time and space domain) are than coded througth the extension of EZW coding to 3D and the bitstream is finnaly passed through a Huffman coder, to achieve better compression ratios. The structure of the video codec and some experimental results are presented. Experimental results evaluate the quality of the codec images and compression ratio achieved with the proposed codec.
publishDate 2002
dc.date.none.fl_str_mv 2002
2002-01-01T00:00:00Z
2010-01-14T12:21:06Z
dc.type.driver.fl_str_mv conference object
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.11/107
url http://hdl.handle.net/10400.11/107
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 972-789-067-9
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
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instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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