Video transcoding from H.264/AVC to MPEG-2 with reduced computational complexity / Sandro Moiron in Signal processing. Image communication, Vol. 24 N° 8 (Septembre 2009)  

Public ISBD [article]  inSignal processing. Image communication > Vol. 24 N° 8 (Septembre 2009) . - pp. 637-650 Titre : Video transcoding from H.264/AVC to MPEG-2 with reduced computational complexity Type de document : texte imprimé Auteurs : Sandro Moiron, Auteur ; Sérgio Faria, Auteur ; António Navarro, Auteur Article en page(s) : pp. 637-650 Note générale : Electronique Langues : Anglais (eng) Mots-clés : Video transcoding H.264/AVC MPEG-2 Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : This paper addresses video transcoding from H.264/AVC into MPEG-2 with reduced complexity and high rate-distortion efficiency. While the overall concept is based on a cascaded decoder–encoder, the novel adaptation methods developed in this work have the advantage of providing very good performance in H.264/AVC to MPEG-2 transcoding. The proposed approach exploits the similarities between the coding tools used in both standards, with the objective of obtaining a computationally efficient transcoder without penalising the signal quality. Fast and efficient methods are devised for conversion of macroblock coding modes and translation of motion information in order to compute the MPEG-2 coding format with a reduced number of operations, by reusing the corresponding data embedded in the incoming H.264/AVC coded stream. In comparison with a cascaded decoder–encoder, the fast transcoder achieves computational complexity savings up to 60% with slightly better peak signal-to-noise ratio (PSNR) at the same bitrate. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...] [article] Video transcoding from H.264/AVC to MPEG-2 with reduced computational complexity [texte imprimé] / Sandro Moiron, Auteur ; Sérgio Faria, Auteur ; António Navarro, Auteur . - pp. 637-650. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 24 N° 8 (Septembre 2009) . - pp. 637-650 Mots-clés : Video transcoding H.264/AVC MPEG-2 Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : This paper addresses video transcoding from H.264/AVC into MPEG-2 with reduced complexity and high rate-distortion efficiency. While the overall concept is based on a cascaded decoder–encoder, the novel adaptation methods developed in this work have the advantage of providing very good performance in H.264/AVC to MPEG-2 transcoding. The proposed approach exploits the similarities between the coding tools used in both standards, with the objective of obtaining a computationally efficient transcoder without penalising the signal quality. Fast and efficient methods are devised for conversion of macroblock coding modes and translation of motion information in order to compute the MPEG-2 coding format with a reduced number of operations, by reusing the corresponding data embedded in the incoming H.264/AVC coded stream. In comparison with a cascaded decoder–encoder, the fast transcoder achieves computational complexity savings up to 60% with slightly better peak signal-to-noise ratio (PSNR) at the same bitrate. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...]

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