Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (31): 193-195.DOI: 10.3778/j.issn.1002-8331.2009.31.058

• 工程与应用 • Previous Articles     Next Articles

DEM matching and surface deformation detecting without control points considering terrain feature

FENG Yi-cong1,2,CEN Min-yi1,ZHANG Tong-gang1,HUANG Zhi-qin2   

  1. 1.Department of Surveying Engineering,School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China
    2.Information Centre,Land and Resource Department of Sichuan Province,Chengdu 610072,China
  • Received:2008-11-21 Revised:2008-12-22 Online:2009-11-01 Published:2009-11-01
  • Contact: FENG Yi-cong



  1. 1.西南交通大学 土木工程学院,成都 610031
    2.四川省国土资源厅信息中心,成都 610072
  • 通讯作者: 冯义从

Abstract: Due to difficulties in building and maintaining control points,terrain change detection is difficult in the inundated area of debris-flow.Considering terrain feature,a new Digital Elevation Model(DEM) matching and deformation detecting method without control points is proposed.The experimental results based on real data sets,the multi-temporal DEMs of PUWAIGOU,validate the proposed method is practical for monitoring the terrain changes in the debris-flow area.

Key words: 3D matching, deformation detecting, robust estimator, terrain feature

摘要: 泥石流爆发地区控制点布设和维护困难,使得精确探测该类区域泥石流造成的地表变化非常困难。基于规则格网DEM(Digital Elevation Model),分析泥石流灾害的特点,提出了顾及地形特征的无控制DEM匹配与差异探测方法。根据不同时相DEM数据,利用该方法成功探测出普歪沟泥石流爆发区的地表水土流失变化。

关键词: 三维匹配, 差异探测, 稳健估计, 地形特征

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