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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/90456


    Title: Fast block matching using prediction and rejection criteria
    Authors: Liaw, Yi-Ching;Lai, Jim Z.C;Hong, Zuu-Chang
    Contributors: 淡江大學機械與機電工程學系
    Keywords: Motion estimation;Block matching;Sum pyramid;Prediction
    Date: 2009-06
    Issue Date: 2013-06-26 11:32:52 (UTC+8)
    Publisher: Amsterdam: Elsevier BV
    Abstract: In this paper, we present a fast block matching algorithm by making use of the correlation between layers of the sum pyramid for a block. To speed our method, an algorithm is also developed to predict the initial motion vector for a template block. Using the elimination criteria and predicted motion vector, our method can further reduce the computational complexity significantly. Compared with the full search block matching algorithm, our approach can reduce the computing time by a factor of 9.9–28.2 with the peak signal-to-noise ratio (PSNR) degradation of 0.00–0.03 dB. Compared to WinUpMI, which is the fastest block matching algorithm preserving global optimality as far as we know, our method can reduce the computing time by 4.9–52.5% with the PSNR degradation of 0.00–0.03 dB. Our method can reduce the computing time of predictive search area approach for fast block motion estimation (PSAFBME) by 50–96% with about the same PSNR.
    Relation: Signal Processing 89(6), pp.1115–1120
    DOI: 10.1016/j.sigpro.2008.12.012
    Appears in Collections:[機械與機電工程學系暨研究所] 期刊論文

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