シーンの重要度に応じて符号化効率を変化させる適応型動画像圧縮法  [in Japanese] Adaptive Video Compression Method Varying Coding Efficiency Corresponding to Importance of a Scene  [in Japanese]

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Abstract

In this paper, we propose a video compression method for video surveillance applications, which varies coding efficiency based on importance of a scene. This method attempts to reduce the video data size according to a coding efficiency which is inversely proportional to unusualness in the recorded data; the lower coding efficiency for the more unusual scenes. The unusualness is defined as deviation from usual motions, which can be statistically learnt by using cubic higher-order local auto-correlation (CHLAC) in combination with a linear subspace method. We conducted an experiment using actual video data to confirm effectiveness of the proposed method. In the experiment, we changed frame-rates for the actual video based on the coding efficiency inversely proportional to unusualness. The data size of the actual video has been reduced to 48% by the proposed method. From the results of the experiment, the proposed method shows effectiveness in reducing the data size by looking into the content of the scene and making use of semantic redundancy.

Journal

  • IEEJ Transactions on Electronics, Information and Systems

    IEEJ Transactions on Electronics, Information and Systems 130(7), 1177-1185, 2010-07-01

    The Institute of Electrical Engineers of Japan

References:  12

Codes

  • NII Article ID (NAID)
    10026865606
  • NII NACSIS-CAT ID (NCID)
    AN10065950
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03854221
  • NDL Article ID
    10741380
  • NDL Source Classification
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL Call No.
    Z16-795
  • Data Source
    CJP  NDL  J-STAGE 
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