Laser scanning technique for the acquisition of digital elevation models of debris flow material
This report describes the application of a laser scanning technique to debris flow materials and deposits. The purpose of laser scanning is to record in-situ 3D information and local arrangements of slope material. By projecting a linear light sheet onto an irregular surface, the profile of a single transect can be acquired. Aseries of transects can be obtained by translating the light sheet over the surface and recording the resulting line shape using a video camera. Data from different lines of the laser scan are then assembled and processed to generate Digital Elevation Models (DEM) of local small-scale topography. We used the technique to investigate surface morphology of debris-flow deposits in Taoyuan county, Taiwan, and upstream of Junghua dam in Fushin Township. In both the laboratory and the field, DEMs with good spatial resolution verify the feasibility of the laser scanning technique for practical applications.
debris flow material DEM image laser scan grain size
A.Y.L. Huang H. Capart R.H. Chen M.Y.F. Huang
Department of Civil Engineering, National Taiwan University, Taipei, Chinese Taipei
国际会议
成都
英文
539-546
2007-05-17（万方平台首次上网日期，不代表论文的发表时间）