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：Segmentation is an important step during 3-D building reconstruction from laser altimetry data. The objective is to group laser points into segments that correspond to planar surfaces, such as facets of building roofs or the (flat) terrain between buildings. A segmentation method is presented that was inspired by a raster-based algorithm in literature, but works on original (triangulated) laser points. It iteratively merges triangles and already formed segments into larger segments. The algorithm is controlled by a single parameter controlling the maximum dissimilarity for adjacent segments such that merging them is still allowed. The resulting TIN segmentation method is compared with 3-D Hough transform
关键词：Laser scanning; 3-D reconstruction; segmentation; grouping; TIN
