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Early SKIP mode decision for MVC using inter-view correlation / Liquan Shen in Signal processing. Image communication, Vol. 25 N° 2 (02 EX.) (Février 2010) 

Public ISBD [article]  in Signal processing. Image communication > Vol. 25 N° 2 (02 EX.) (Février 2010) . - pp. 88-93 Titre : Early SKIP mode decision for MVC using inter-view correlation Type de document : texte imprimé Auteurs : Liquan Shen, Auteur ; Zhi Liu, Auteur ; Tao Yan, Auteur Année de publication : 2010 Article en page(s) : pp. 88-93 Note générale : Electronique Langues : Anglais (eng) Mots-clés : Multiview  video  coding  Mode  decision  Motion  estimation  Disparity  estimation Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : In the joint multiview video model (JMVM) proposed by JVT, the variable block-size motion estimation (ME) and disparity estimation (DE) have been employed to determine the best coding mode for each macroblock (MB). These give a high coding efficiency for multiview video coding (MVC), however, they cause a very high computational complexity in encoding system. This paper proposes to reduce the complexities of the ME and DE processes with an early SKIP mode decision algorithm based on the analysis of prediction mode distribution regarding the corresponding MBs in the neighbor view. In this method, the mode decision procedures of most of MBs can be early terminated, and thus much of computation for ME and DE can be greatly reduced. Simulation results demonstrate that our algorithm can achieve computational saving of 46–57% (depending on the tested sequences) with no significant loss of rate-distortion performance. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...] [article] Early SKIP mode decision for MVC using inter-view correlation [texte imprimé] / Liquan Shen, Auteur ; Zhi Liu, Auteur ; Tao Yan, Auteur . - 2010 . - pp. 88-93. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 25 N° 2 (02 EX.) (Février 2010) . - pp. 88-93 Mots-clés : Multiview  video  coding  Mode  decision  Motion  estimation  Disparity  estimation Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : In the joint multiview video model (JMVM) proposed by JVT, the variable block-size motion estimation (ME) and disparity estimation (DE) have been employed to determine the best coding mode for each macroblock (MB). These give a high coding efficiency for multiview video coding (MVC), however, they cause a very high computational complexity in encoding system. This paper proposes to reduce the complexities of the ME and DE processes with an early SKIP mode decision algorithm based on the analysis of prediction mode distribution regarding the corresponding MBs in the neighbor view. In this method, the mode decision procedures of most of MBs can be early terminated, and thus much of computation for ME and DE can be greatly reduced. Simulation results demonstrate that our algorithm can achieve computational saving of 46–57% (depending on the tested sequences) with no significant loss of rate-distortion performance. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...]

Selective VS-MRF-ME and intra coding in H.264 based on spatiotemporal continuity of motion field / Liquan Shen in Signal processing. Image communication, Vol. 24 N° 5 (Mai 2009) 

Public ISBD [article]  in Signal processing. Image communication > Vol. 24 N° 5 (Mai 2009) . - pp. 405-414 Titre : Selective VS-MRF-ME and intra coding in H.264 based on spatiotemporal continuity of motion field Type de document : texte imprimé Auteurs : Liquan Shen, Auteur ; Zhi Liu, Auteur ; Zhaoyang Zhang, Auteur Article en page(s) : pp. 405-414 Note générale : Electronique Langues : Anglais (eng) Mots-clés : Video  coding  H.264  Motion  continuity  Variable  size  motion  estimation  Multiple-frame  motion  estimation  Intra  coding Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : The new video coding standard, H.264 uses variable size motion estimation (VS-ME), multiple reference frame motion estimation (MRF-ME) and spatial-based intra prediction with selectable block size in inter frame coding. These tools have achieved significant coding efficiency compared to coding a macroblock (MB) only based on motion-compensation in regular size with single reference frame. However, these new features also give rise to an exhaustive computation in the coding procedure since there are so many combinations of coding modes and reference frames to be tried. In this paper, a fast motion estimation algorithm based on the selective VS-MRF-ME and intra prediction is proposed to reduce H.264 coding computational complexity. The basic idea of the method is to utilize the spatiotemporal property of motion field in predicting where VS-MRF-ME and intra prediction are needed, and only in these regions VS-MRF-ME and intra coding are enabled. The motion field is generated by motion vectors from 16×16 motion estimation on the nearest reference frame. Simulation results show that the proposed algorithm can save 50% computational complexity on average, with negligible loss of coding efficiency. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...] [article] Selective VS-MRF-ME and intra coding in H.264 based on spatiotemporal continuity of motion field [texte imprimé] / Liquan Shen, Auteur ; Zhi Liu, Auteur ; Zhaoyang Zhang, Auteur . - pp. 405-414. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 24 N° 5 (Mai 2009) . - pp. 405-414 Mots-clés : Video  coding  H.264  Motion  continuity  Variable  size  motion  estimation  Multiple-frame  motion  estimation  Intra  coding Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : The new video coding standard, H.264 uses variable size motion estimation (VS-ME), multiple reference frame motion estimation (MRF-ME) and spatial-based intra prediction with selectable block size in inter frame coding. These tools have achieved significant coding efficiency compared to coding a macroblock (MB) only based on motion-compensation in regular size with single reference frame. However, these new features also give rise to an exhaustive computation in the coding procedure since there are so many combinations of coding modes and reference frames to be tried. In this paper, a fast motion estimation algorithm based on the selective VS-MRF-ME and intra prediction is proposed to reduce H.264 coding computational complexity. The basic idea of the method is to utilize the spatiotemporal property of motion field in predicting where VS-MRF-ME and intra prediction are needed, and only in these regions VS-MRF-ME and intra coding are enabled. The motion field is generated by motion vectors from 16×16 motion estimation on the nearest reference frame. Simulation results show that the proposed algorithm can save 50% computational complexity on average, with negligible loss of coding efficiency. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...]