時空間微分に基づくPIVを用いたシミュレーションおよび実河川画像への適用 Application in the simulation and real river images using PIV with optical flow

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This paper compares the accuracy of the novel PIV technique based on the optical flow concept and the conventional PIV with the Gaussian sub-pixel fitting. In the new technique, we take into account of image gradient terms with three consecutive frames in the optical flow treatment in order to improve the accuracy for complex flows. This paper includes: i) the fundamental concept and formula of the new method, ii) experiments with standard PIV images, video sequences of the meandering channel flow in a Japanese old garden and flow images of the Uji river, and iii) the discussion on the measurement accuracy. The result shows that the presented method is superior to the conventional PIV especially in the measurement of instantaneous flow field with rotational motion.

収録刊行物

  • 可視化情報学会誌. Suppl.

    可視化情報学会誌. Suppl. 24(1), 349-352, 2004-07-01

    社団法人 可視化情報学会

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各種コード

  • NII論文ID(NAID)
    10013273239
  • NII書誌ID(NCID)
    AA11907562
  • 本文言語コード
    JPN
  • 資料種別
    SHO
  • ISSN
    09164731
  • NDL 記事登録ID
    7031166
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z15-431
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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