IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Measurement of debris-flow surface characteristics through closerange photogrammetry
S. Zhang; J. Chen
Corresponding AuthorS. Zhang
Source Publication3rd International Conference on Debris-Flow Hazards Mitigation ; Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Rickenmann & Chen (eds) © 2003 Millpress
Conference Date2003
Conference Place-
Funding OrganizationMillpress, Rotterdam
AbstractThe system of Image analysis for debris flow is based on the principle of closerange
photogrammetry to measure the surface characteristics of debris flow by metric or nonmetric cameras using prototype observation and laboratory experiments. The system can specify the 3D coordinates of each specified point on the surface of a debris flow. Collecting data of 3D coordinates of all the surface points, we can construct a 3D model named as the Digital Elevation Model (DEM). As a dynamic system, the DEM can work well when measurements are taken in definite interval, say 1 to 2 seconds. Some key characteristics of a debris flow, such as the surge height and pattern, geometry of longitudinal and transversal sections, surface slope, point velocity, velocity field, among others, can be promptly shown by DEM. A software, which programs the operation of the DEM, has been developed as a powerful tool in debris flow research.
KeywordImage Analysis Close-range Photogrammetry Debris Flow
Document Type会议论文
Corresponding AuthorS. Zhang
Recommended Citation
GB/T 7714
S. Zhang,J. Chen. Measurement of debris-flow surface characteristics through closerange photogrammetry[C],2003:775-784.
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