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：2002
卷号：XXXIV Part 4
出版社：Copernicus Publications
摘要：This work presents a method for viewing in three dimensions an university camp us and its associated buildings, when the cartographic data was not completely available. The authors had to rely on old and outdated maps to prepare a Digital Terrain Model of the campus. Another difficulty was that the data was divided into seven maps and an adjustment had to be made on the borders of them. Based on the recovered data a Delaunay Triangulation was performed. However, the model so acquired did not represent properly the terrain features, because of the shape of the triangles in the automatic triangulation. To solve this problem, the authors did generate a new isoline, with an altitude one meter belo w the minimum of the regio n, circulating the whole campus area. Once these models were created, it was possible to navigate and fly over the campus terrain thus obtained
