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Fast mode-decision for H.264/AVC based on inter-frame correlations / Hyunsuk Ko in Signal processing. Image communication, Vol. 24 N° 10 (Novembre 2009) 

Public ISBD [article]  in Signal processing. Image communication > Vol. 24 N° 10 (Novembre 2009) . - pp. 803-813 Titre : Fast mode-decision for H.264/AVC based on inter-frame correlations Type de document : texte imprimé Auteurs : Hyunsuk Ko, Auteur ; Kiwon Yoo, Auteur ; Kwanghoon Sohn, Auteur Article en page(s) : pp. 803-813 Note générale : Electronique Langues : Anglais (eng) Mots-clés : H.264/AVC  Intra-prediction  Inter-prediction  Rate-distortion  optimization Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : The H.264/AVC standard yields higher coding efficiency rates than other video coding standards. This is because it uses the rate-distortion optimization (RDO) technique, which selects the optimal coding mode and a reference frame for each macroblock (MB). In order to achieve this, the encoder has to encode a given block by exhaustively using all kinds of combinations (including different intra and inter-prediction modes). As a result, the computational complexity of video coding in H.264/AVC is extremely high. In this paper, two fast intra-/inter-mode-decision algorithms are proposed to reduce the complexity of the encoder. Both of these algorithms are based on the inter-frame correlation among adjacent pictures. For the fast intra-mode-decision, we used the intra-mode of the most-correlated MB at the reference frame to encode the current MB and the stationary property of the current MB was used for the fast inter-mode-decision. The simulation results show that the proposed algorithms significantly reduced the computational complexity with a negligible loss of PSNR and a slight increase in bitrate. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...] [article] Fast mode-decision for H.264/AVC based on inter-frame correlations [texte imprimé] / Hyunsuk Ko, Auteur ; Kiwon Yoo, Auteur ; Kwanghoon Sohn, Auteur . - pp. 803-813. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 24 N° 10 (Novembre 2009) . - pp. 803-813 Mots-clés : H.264/AVC  Intra-prediction  Inter-prediction  Rate-distortion  optimization Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : The H.264/AVC standard yields higher coding efficiency rates than other video coding standards. This is because it uses the rate-distortion optimization (RDO) technique, which selects the optimal coding mode and a reference frame for each macroblock (MB). In order to achieve this, the encoder has to encode a given block by exhaustively using all kinds of combinations (including different intra and inter-prediction modes). As a result, the computational complexity of video coding in H.264/AVC is extremely high. In this paper, two fast intra-/inter-mode-decision algorithms are proposed to reduce the complexity of the encoder. Both of these algorithms are based on the inter-frame correlation among adjacent pictures. For the fast intra-mode-decision, we used the intra-mode of the most-correlated MB at the reference frame to encode the current MB and the stationary property of the current MB was used for the fast inter-mode-decision. The simulation results show that the proposed algorithms significantly reduced the computational complexity with a negligible loss of PSNR and a slight increase in bitrate. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...]