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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/29078

    Title: Improved parabolic prediction-based fractional search for H.264/AVC video coding
    Authors: Lin,Y;Wang,YC
    Contributors: 通訊工程研究所
    Date: 2009
    Issue Date: 2010-06-29 20:12:46 (UTC+8)
    Publisher: 中央大學
    Abstract: In this study, the authors propose an efficient fractional pixel search algorithm for H.264/AVC video coding to reduce the computational complexity in half/quarter-pixel motion estimation. A prediction for the optimal motion vector is derived under the assumption that the sum of absolute transform differences error surface is a symmetric parabolic function. With the optimal region, a decision rule for half-pixel search is proposed. The experimental result shows that approximately two search points are required. Based on the half-pixel search, a hierarchical quarter-pixel search is described and an extra three search points, on average, are consumed for each quarter-pixel search. Experimental results show that significant reduction in computation can be achieved, while maintaining high coding efficiency.
    Appears in Collections:[通訊工程研究所] 期刊論文

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