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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/50574

    Title: Novel fast block motion estimation using diamond-arc-hexagon search patterns
    Authors: 江正雄;Chiang, Jen-shiun;Lin, Han-ting;Hsia, Chih-hsien
    Contributors: 淡江大學電機工程學系
    Keywords: motion estimation (ME);block‐matching algorithm;center‐based motion vector distribution;fast motion estimation algorithm
    Date: 2008-09
    Issue Date: 2013-07-11 11:56:50 (UTC+8)
    Publisher: Taipei : Chinese Institute of Chemical Engineers
    Abstract: This work presents a novel block motion estimation (ME) approach, diamondarc-hexagon search (DAHS), which uses diamond, arc, and hexagon search patterns to accomplish the fast searching process. According to the characteristic of the center-based motion vector distribution for the real-world video sequence, DAHS employs a small diamond pattern extended hexagon search to refine the central area search. Furthermore for estimation in large motion situations, the strategy of the large diamond-to-arc search can preserve good performance. Experimental results indicate that DAHS is suitable for both (quasi-) stationary and large motion searches. DAHS outperforms the efficient three-step (E3SS) and hexagon-based search (HEXBS) in prediction quality, and improves the searching speed about 9% compared to E3SS. The proposed algorithm was tested using several sequences and delivered excellent performance in search speed and prediction of video quality. The DAHS can be applied to real-time video processes, such as H.264/MPEG-4 advanced video coding (AVC) and scalable video coding (SVC).
    Relation: Journal of the Chinese Institute of Engineers=中國工程學刊 31(6), pp.955-966
    DOI: 10.1080/02533839.2008.9671450
    Appears in Collections:[電機工程學系暨研究所] 期刊論文

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