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：2008
卷号：XXXVII Part B1
页码：751-756
出版社：Copernicus Publications
摘要：In order to simplify the generalization of contour lines during the compilation of maps at smaller scales, an indirect method is put forward based on the generalization of the corresponding DEM first using the 3 dimensional Douglas-Peucker (3D D-P) algorithm before the final contour lines are derived. Preliminary experiments show that the Douglas-Peucker algorithm can be expanded to 3D and it is suitable for the global generalization of DEMs. Furthermore, the derived contour lines from the generalized DEMs can maintain the macro relief form while depress the micro geo-morphological vibration. It is concluded that the indirect generalization of contour lines based on the DEM generalization using 3D D-P algorithm is a promising way according to its speed and quality in the generalization
关键词：Cartography; GIS; Algorithm; DEM/DTM; Geomorphology; Global Generalization
