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Proceedings Paper

Debris flow velocity estimation: a comparison between gradient-based method and cross-correlation method
Author(s): Mohammad Shorif Uddin; Hiroyuki Inaba; Yasuo Yoshida; Yasumasa Itakura
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Paper Abstract

Debris flow causes lot of damages all over the world. The surface velocity of such a natural random flow is one of the important physical parameters that are considered in drawing a hazard map or constructing a sediment control dam. Gradient-based method along with a multiscale smoothing operation finds application in the two-dimensional velocity estimation of a debris flow from its video images. This paper investigates the performance of another optical flow determination technique - the cross-correlation method in the above application and compares the results with those obtained by the gradient-based method. A computer simulation with synthetic random moving images shows that the accuracy of the cross correlation method is higher than that of the gradient-based method.

Paper Details

Date Published: 22 May 2002
PDF: 9 pages
Proc. SPIE 4667, Image Processing: Algorithms and Systems, (22 May 2002); doi: 10.1117/12.467974
Show Author Affiliations
Mohammad Shorif Uddin, Kyoto Institute of Technology (Japan)
Hiroyuki Inaba, Kyoto Institute of Technology (Japan)
Yasuo Yoshida, Kyoto Institute of Technology (Japan)
Yasumasa Itakura, Shiga Univ. (Japan)

Published in SPIE Proceedings Vol. 4667:
Image Processing: Algorithms and Systems
Edward R. Dougherty; Jaakko T. Astola; Karen O. Egiazarian, Editor(s)

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