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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/101078

    Title: An Efficient Intra Prediction Algorithm for H.264/AVC High Profile
    Authors: Bo Shen;Cheng, Kuo-Hsiang;Yun Liu;Wang, Ying-Hong
    Contributors: 淡江大學資訊工程學系
    Keywords: H.264/AVC;block size;prediction mode;rate-distortion optimization
    Date: 2014-04-01
    Issue Date: 2015-04-06 09:37:36 (UTC+8)
    Publisher: 台北市:中華民國電腦學會
    Abstract: A simple, highly efficient intra prediction algorithm to reduce the computational complexity of H.264/AVC High Profile is proposed. The algorithm combines two methods. The first method is a quant-based block-size selection decision that is based on the sum of the quantization AC coefficients among intra 8 × 8 mode predictions, combined with an error adjustment to select either intra 4 × 4 or intra 16 × 16 mode predictions. The second method is a novel direction-based prediction mode decision that is used to reduce the possible prediction modes for the rate-distortion (RD) optimization technique. Our experimental results demonstrate that the proposed algorithm reduces the encoding time by approximately 54% compared with that needed for an exhaustive search using the joint model reference software. The peak signal-to-noise ratio degradation is negligible, and the bit rate increment is minimal. Furthermore, the results show that our algorithm achieves a significant improvement in both computation performance and RD performance as compared with the existing algorithms.
    Relation: 電腦學刊=JOURNAL OF COMPUTERS 25(1),頁56-71
    Appears in Collections:[Graduate Institute & Department of Computer Science and Information Engineering] Journal Article
    [Graduate Institute & Department of Economics] Journal Article

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