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：2010
卷号：XXXVIII - Part 5
页码：331-336
出版社：Copernicus Publications
摘要：We are making research to find a novel method to extract the break-lines of a building from the point clouds obtained through a Scanner (Terrestrial Laser Scanner: TLS). The algorithm we have developed this time is to segment the plane surfaces and point clouds and to extract the line of two intersecting planes, as the break-line. But since our algorithm is not yet completely free from the errors in calculating of algorithm and measuring of TLS, it is used as yet primarily for pre-processing steps, such as creation of a plan or a modeling or assisting to understand object form or making rough sketch of an object. But even for thes e preliminary works, up to now, we were obliged to resort to manual works and to the use of various applications. So, now we have developed a novel system to extract all automatically the surface and break-lines, which would greatly improve the efficiency of the whole operation. We have also developed a system to convert the point clouds data into the polygon data of surface and lines, much to the alleviation of the setback due to the heavy data accumulation. Besides, in order to facilitate the measurement using TLS in the real environment, our algorithm makes it possible to segment the planes and to extract the break-lines of objects, while eliminating automatically all the disturbing noises created by pedestrians, cars , trees, and grasses intervening between the TLS and the objects
关键词：TLS; Point Cloud; Segmentation; Surface; Extraction; Algorithm; Three-dimensional; Measurement
