A new method of DEM generation from contour line

	A new method of DEM generation from contour line
	Yue Tianxiang
	2012
关键词	Contour measurement Control Forestry Optimization
英文摘要	This paper proposed a new method (HASM-OC) to construct DEM from contour lines based on the optimal control. Presently, HASM (high accuracy surface modeling) which is used to handle discrete points only. Firstly a regular grid points' are set up, on which each elevation will be predicted using the new method, each grid point represents the square grid area surrounding itself. Secondly, contour lines are used to construct contour trees, which are then used to get the bound constraints for each grid points. Finally, integrating the HASM equations, a numerical optimization problem is formed. By solving the optimization problem DEM can be secured, which is continuous and of high fidelity to original contours. A real contour lines example is given, and results from HASM-OC is compared with that from Hutchinson method based on TPS (thin plate spline), the former is superior to the latter in DEM construction from real contour lines.
出处	Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University
卷	37 期:4 页:472-476
收录类别	EI
语种	英语
内容类型	EI期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/27673]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Yue Tianxiang. A new method of DEM generation from contour line. 2012.