A VLSI-oriented algorithm and its implementation for AVS chroma interpolation / Bingqiang Zhu 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. 682-690 Titre : A VLSI-oriented algorithm and its implementation for AVS chroma interpolation Type de document : texte imprimé Auteurs : Bingqiang Zhu, Auteur ; Yun He, Auteur ; Shunliang Mei, Auteur Article en page(s) : pp. 682-690 Note générale : Electronique Langues : Anglais (eng) Mots-clés : AVS Bilinear filtering Chroma Interpolation VLSI Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : AVS (audio video coding standard) is the latest multimedia coding standard of China. Similar to H.264/AVC, AVS adopted the technology of fractional-pel-accurate motion compensation, which enhanced the compression efficiency. To obtain fractional pels, 4-tap FIR filters and bilinear filters are used for luma and chroma interpolation respectively. Unlike the VLSI-optimized FIR filters which could be implemented by adders and shifters, the bilinear filter for chroma is not so convenient for direct VLSI implementation due to its multiplications. In this paper, we propose a VLSI-oriented algorithm named SHAM (x–y-separated halved-approaching method) to accomplish the bilinear filtering. The proposed SHAM algorithm adopts a halved-approaching method which is an addition-and-shift-only method and with simpler data path. VLSI structures are also provide to implement the SHAM algorithm in this paper. Experiments based on UMC View the MathML source process show that the SHAM algorithm could be implemented with about 48% less silicon area or at doubled frequency compared with the direct implementation of the bilinear filter. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...] [article] A VLSI-oriented algorithm and its implementation for AVS chroma interpolation [texte imprimé] / Bingqiang Zhu, Auteur ; Yun He, Auteur ; Shunliang Mei, Auteur . - pp. 682-690. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 24 N° 8 (Septembre 2009) . - pp. 682-690 Mots-clés : AVS Bilinear filtering Chroma Interpolation VLSI Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : AVS (audio video coding standard) is the latest multimedia coding standard of China. Similar to H.264/AVC, AVS adopted the technology of fractional-pel-accurate motion compensation, which enhanced the compression efficiency. To obtain fractional pels, 4-tap FIR filters and bilinear filters are used for luma and chroma interpolation respectively. Unlike the VLSI-optimized FIR filters which could be implemented by adders and shifters, the bilinear filter for chroma is not so convenient for direct VLSI implementation due to its multiplications. In this paper, we propose a VLSI-oriented algorithm named SHAM (x–y-separated halved-approaching method) to accomplish the bilinear filtering. The proposed SHAM algorithm adopts a halved-approaching method which is an addition-and-shift-only method and with simpler data path. VLSI structures are also provide to implement the SHAM algorithm in this paper. Experiments based on UMC View the MathML source process show that the SHAM algorithm could be implemented with about 48% less silicon area or at doubled frequency compared with the direct implementation of the bilinear filter. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...]

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