A New Method of Matching Multi-temporal DEM to Detect Terrain Deformation Caused by Debris Flow

ZHANG Tonggang; CEN Minyi; QIN Jun; WU Xinghua

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A New Method of Matching Multi-temporal DEM to Detect Terrain Deformation Caused by Debris Flow

- A New Method of Matching Multi-temporal DEM to Detect Terrain Deformation Caused by Debris Flow
- Bulletin of Soiland Water Conservation Vol. 25, Issue 3, Pages: 96-98(2006)
- 作者机构：
  
  西南交通大学土木工程学院,四川,成都,610031
- 作者简介：
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- Published：2006
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ZHANG Tonggang, CEN Minyi, QIN Jun, et al. A New Method of Matching Multi-temporal DEM to Detect Terrain Deformation Caused by Debris Flow[J]. Bulletin of Soiland Water Conservation, 2006, 25(3): 96-98.
DOI：

ZHANG Tonggang, CEN Minyi, QIN Jun, et al. A New Method of Matching Multi-temporal DEM to Detect Terrain Deformation Caused by Debris Flow[J]. Bulletin of Soiland Water Conservation, 2006, 25(3): 96-98. DOI：

摘要

通过多时相DEM探测泥石流地区地表形变

必须建立DEM的统一坐标系

才能计算地表形变量。引入无控制三维表面匹配技术

提出分块区域匹配方法配准两期DEM。实例试验表明:分块区域匹配方法比现有的M—LZD算法更能适合泥石流灾害地区的DEM匹配

探测出的地表变化精度更高。

Abstract

The volume of terrain deformation caused by debris flow can be calculated by the multi-temporal DEM derived from aerial-photography only when they are in common coordinate.This paper introduces the technique of 3D surface matching without using control points.A new algorithm

Multiply Surface Patches Matching(MSPM)

is proposed to match the two temporal DEMs.The experimental results on real data sets show that MSPM is more appropriate for DEM matching in debris-flow area and has higher accuracy than that of M-LZD algorithm.

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