摘要
采用COM技术,以ARCENGINE所提供的类库和凸包算法,实现了数字高程模型(DEM)数据更新的边界检测和利用矢量地形数据采集更新数字高程模型数据的方法。保证了数字高程模型数据的精度,可以满足数字高程模型的现势性需求。
This paper applies the technology of COM and the classes library of ArcEngine that ESRI provides,introduces the algorithm of convex hull, realizes the renewal of digital elevation modeling (DEM) by boundary detection using data collection about vector terrain. It makes sure the precision of DEM, can meet the reality needs of DEM.
出处
《海洋测绘》
2006年第1期50-53,共4页
Hydrographic Surveying and Charting
关键词
地理信息系统
数字高程模型
凸包算法
边界检测
geographic information system ( GIS )
digital elevation modeling ( DEM )
algorithm ofconvex hull
boundary detection