期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：1992
卷号：XXIX Part B3
页码：566-573
出版社：Copernicus Publications
摘要：Two raster algorithms for solving problems iIi surfacemodelling are presented. A raster-based triangulationallows for a simple consideration of constraint edgesand thus improves computational complexion of theconstrained triangulation to a great extent. A medialaxis method derives geomorphological elements, e.g.peaks, pits, saddle points, ridge and drainage lines,from a given set of contours and actually assists ingenerating a high-quality digital terrain model fromcontours. Examples demonstrate the efficiency of ajoint use of the two algorithms in terrain modelling
