可視化情報学会誌
Online ISSN : 1884-037X
Print ISSN : 0916-4731
ISSN-L : 0916-4731
101 画像解析による時間平均流の計測
奥野 武俊木元 庸晃
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1993 年 13 巻 Supplement2 号 p. 3-8

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Several image measurement methods for obtaining time-mean velocity field are investigated. The spatial filter method and the time-averaged contrast method, which have been reported already by the authors, are examined again for comparison of techniques. A new method, called zero-cross counting method here, is also proposed. Algorithm of the present technique is very simple using only difference betweeen images and its accumulation. This is effective to measure a slow velocity.

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