title: Estimation of the surface velocity of debris flow with computer-based spatial filtering.
abstract: A computer-based spatial-filtering velocimeter to measure the surface velocity of natural debris flow is described. This is a simple and interesting technique implemented with a spatial filter constructed as a software program that processes the video image of debris flow instead of a hardware implementation. The surface velocity of the debris flow at the Mt. Yakedake Volcano, Japan, was estimated by this computer-based spatial-filtering method, and the results were compared with those obtained by a hardware-based spatial-filtering method. Computer-based spatial filtering has the important advantage of a capability for tuning the spatial-filter parameters to the target flow.
authors.forename: M S
authors.initials: MS
authors.lastname: Uddin
authors.forename: H
authors.initials: H
authors.lastname: Inaba
authors.forename: Y
authors.initials: Y
authors.lastname: Itakura
authors.forename: M
authors.initials: M
authors.lastname: Kasahara