摘要
针对城市三维GIS研究中涉及到的利用矢量地形图建立数字高程模型(digitalelevationmodel——DEM)问题进行了研究与实验,提出一种基于高程控制点自动聚集、集合内邻近控制点协作来自动识别等高线高程的数据采集方法,并将该方法应用于三维GIS平台的开发,取得了较好的实验效果.
The methods of building DEM(digital elevation model) based on city vector map are studied in this paper. This procedure is important in the research on threedimensional urban GIS. It is proposed that people should make use of the cooperation of the nearest control points to evaluate the heights of contours automatically. Using this method in developing the threedimensional urban GIS platform the experiment is performed, and its result is satisfied.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2003年第2期252-255,共4页
Journal of Dalian University of Technology
