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：2009
卷号：XXXVIII-4/W10
出版社：Copernicus Publications
摘要：To create 3D vector building models is still a problem for most projects, the traditional way to do this is to extract the regular building borders from DSM, but the DSM precision always lower than the image, it is hard to detect the boundaries of building. Now the True Ortho-image comes, it should be existed a fast, efficient way to extract buildings border. A new method integrating DSM with True Ortho-image to construct terrain and building model is proposed in this paper. Because the boundary line of buildings is more precise and clear in True Ortho-image, we extract borders from True Ortho-image and automatically get evaluation information from DSM. After modelling buildings, it treats the building footprints as many holes on the ground, then triangulate the terrain polygon with constrained Delaunay algorithm. The final step is to do texture mapping with True Ortho-image texture
关键词：Ortho-image; DSM; Building model; Triangulation technology
