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A fast intra prediction mode decision using DCT and quantization for H.264/AVC / Dae-Yeon Kim in Signal processing. Image communication, Vol. 26 N° 8-9 (Octobre 2011) 

Public ISBD [article]  in Signal processing. Image communication > Vol. 26 N° 8-9 (Octobre 2011) . - pp. 455–465 Titre : A fast intra prediction mode decision using DCT and quantization for H.264/AVC Type de document : texte imprimé Auteurs : Dae-Yeon Kim, Auteur ; Yung-Lyul Lee, Auteur Année de publication : 2012 Article en page(s) : pp. 455–465 Note générale : Electronique Langues : Anglais (eng) Mots-clés : Video  coding  Fast  mode  decision  Intra  prediction  Discrete  cosine  transform  H.264/AVC Résumé : Intra coding is used for reducing the spatial redundancy in video coding. H.264/AVC supports block-based predictions for Intra coding. These Intra predictions also have several directional prediction modes, which significantly improve the Intra coding efficiency, but increase the encoding complexity. In this paper, two fast Intra prediction mode decision algorithms are proposed for H.264/AVC Intra coding. The proposed algorithms select one representative prediction mode or a few representative prediction modes among all intra predictions using the existing DCT and quantization schemes of H.264/AVC, and only the representative modes are used for the Rate Distortion Optimization (RDO) process. The experimental results show that the proposed algorithm 1 and 2 achieve encoding time savings of 53% and 63%, respectively, with negligible loss of Peak Signal-to-Noise Ratio (PSNR). ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science/article/pii/S0923596511000701 [article] A fast intra prediction mode decision using DCT and quantization for H.264/AVC [texte imprimé] / Dae-Yeon Kim, Auteur ; Yung-Lyul Lee, Auteur . - 2012 . - pp. 455–465. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 26 N° 8-9 (Octobre 2011) . - pp. 455–465 Mots-clés : Video  coding  Fast  mode  decision  Intra  prediction  Discrete  cosine  transform  H.264/AVC Résumé : Intra coding is used for reducing the spatial redundancy in video coding. H.264/AVC supports block-based predictions for Intra coding. These Intra predictions also have several directional prediction modes, which significantly improve the Intra coding efficiency, but increase the encoding complexity. In this paper, two fast Intra prediction mode decision algorithms are proposed for H.264/AVC Intra coding. The proposed algorithms select one representative prediction mode or a few representative prediction modes among all intra predictions using the existing DCT and quantization schemes of H.264/AVC, and only the representative modes are used for the Rate Distortion Optimization (RDO) process. The experimental results show that the proposed algorithm 1 and 2 achieve encoding time savings of 53% and 63%, respectively, with negligible loss of Peak Signal-to-Noise Ratio (PSNR). ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science/article/pii/S0923596511000701