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An improved fast mode decision algorithm for intraprediction in H.264/AVC video coding / Manuel De-Frutos-López in Signal processing. Image communication, Vol. 25 N° 10 (Novembre 2010) 

Public ISBD [article]  in Signal processing. Image communication > Vol. 25 N° 10 (Novembre 2010) . - pp. 709–716 Titre : An improved fast mode decision algorithm for intraprediction in H.264/AVC video coding Type de document : texte imprimé Auteurs : Manuel De-Frutos-López, Auteur ; Daniel Orellana-Quirós, Auteur ; José C. Pujol-Alcolado, Auteur Année de publication : 2012 Article en page(s) : pp. 709–716 Note générale : Electronique Langues : Anglais (eng) Mots-clés : H.264/AVC  Intra  Mode  decision  Fast  intra  mode  decision Résumé : In this article, an improved version of one of the most cited intra mode decision algorithms in H.264/AVC video coding is proposed with the aim to improve its efficiency and performance. The reference algorithm determines the interpolation/extrapolation spatial direction (mode) for achieving the best intra prediction using the Sobel gradient calculation. The proposed algorithm suggests reducing the number of gradients calculated and changing the Sobel operator to that of Roberts. In addition to this, it also proposes including the previously encoded neighboring block modes among the evaluated modes. Experimental results show that the proposed algorithm reduces the computational load of the original algorithm and substantially improves its rate-distortion performance. ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science/article/pii/S0923596510001128 [article] An improved fast mode decision algorithm for intraprediction in H.264/AVC video coding [texte imprimé] / Manuel De-Frutos-López, Auteur ; Daniel Orellana-Quirós, Auteur ; José C. Pujol-Alcolado, Auteur . - 2012 . - pp. 709–716. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 25 N° 10 (Novembre 2010) . - pp. 709–716 Mots-clés : H.264/AVC  Intra  Mode  decision  Fast  intra  mode  decision Résumé : In this article, an improved version of one of the most cited intra mode decision algorithms in H.264/AVC video coding is proposed with the aim to improve its efficiency and performance. The reference algorithm determines the interpolation/extrapolation spatial direction (mode) for achieving the best intra prediction using the Sobel gradient calculation. The proposed algorithm suggests reducing the number of gradients calculated and changing the Sobel operator to that of Roberts. In addition to this, it also proposes including the previously encoded neighboring block modes among the evaluated modes. Experimental results show that the proposed algorithm reduces the computational load of the original algorithm and substantially improves its rate-distortion performance. ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science/article/pii/S0923596510001128