摘要
研究了曲面建模方法(HASM)用于处理河流线和离散点的情形,给出了甘肃省庆阳市董志塬崆峒沟的扫描地形图案例。为简单起见,本文只研究其中的河流线和离散点等两种数据的情形,并通过可视化的手段比较了HASM的结果与河流线约束TIN及薄板样条方法的结果,发现HASM的结果更合理。
This paper uses HASM method to construct DEM from stream lines and scattered points.A case study on the typical landform of plateau of China,Kongtong gully of Dongzhi Plateau,Qingyang,Gansu Province,is presented.The original data is manually vecterized from scanned maps 1∶10 000,includes scattered points,stream lines,contour lines,precipitous cliff lines of a region of area about 4×5 square km.For simplicity this paper uses only the former two of them.Compared with the result from stream-line-constrained TIN and hydrologically correct DEM construction method thin plate spline（TPS）,through visual inspection,HASM gets a more desirable DEM and more reasonable integration of information of the terrain features.Some challenges and future research about HASM is also given.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2010年第11期1373-1376,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金青年基金资助项目(40801187)
国家杰出青年科学基金资助项目(40825003)
中国科学院资源与环境信息系统国家重点实验室开放研究基金资助项目(A0704)
