Debris flow velocity estimation: a comparison between gradient-based method and cross-correlation method

Mohammad Shorif Uddin; Hiroyuki Inaba; Yasuo Yoshida; Yasumasa Itakura

doi:10.1117/12.467974

22 May 2002 Debris flow velocity estimation: a comparison between gradient-based method and cross-correlation method

Mohammad Shorif Uddin, Hiroyuki Inaba, Yasuo Yoshida, Yasumasa Itakura

Proceedings Volume 4667, Image Processing: Algorithms and Systems; (2002) https://doi.org/10.1117/12.467974
Event: Electronic Imaging, 2002, San Jose, California, United States

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.

Citation Download Citation

Mohammad Shorif Uddin, Hiroyuki Inaba, Yasuo Yoshida, and Yasumasa Itakura "Debris flow velocity estimation: a comparison between gradient-based method and cross-correlation method", Proc. SPIE 4667, Image Processing: Algorithms and Systems, (22 May 2002); https://doi.org/10.1117/12.467974

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