计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2009年
31期
193-195,226
,共4页
三维匹配%差异探测%稳健估计%地形特征
三維匹配%差異探測%穩健估計%地形特徵
삼유필배%차이탐측%은건고계%지형특정
3D matching%deformation detecting%robust estimator%terrain feature
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.
泥石流爆髮地區控製點佈設和維護睏難,使得精確探測該類區域泥石流造成的地錶變化非常睏難.基于規則格網DEM(Digital Elevation Model),分析泥石流災害的特點,提齣瞭顧及地形特徵的無控製DEM匹配與差異探測方法.根據不同時相DEM數據,利用該方法成功探測齣普歪溝泥石流爆髮區的地錶水土流失變化.
니석류폭발지구공제점포설화유호곤난,사득정학탐측해류구역니석류조성적지표변화비상곤난.기우규칙격망DEM(Digital Elevation Model),분석니석류재해적특점,제출료고급지형특정적무공제DEM필배여차이탐측방법.근거불동시상DEM수거,이용해방법성공탐측출보왜구니석류폭발구적지표수토류실변화.
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.
