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：2004
卷号：XXXV Part B3
页码：1085-1090
出版社：Copernicus Publications
摘要：There have been numerous approaches to automatically extract man-made objects from images or laser scan data in the past. Many efforts have been put into the detection and measurement of object parts. However, putting those parts together in such a way that a topologically correct object representation is obtained – which additionally meets certain regulariza- tion conditions – has not been addressed in a satisfactory manner. In this paper, following a review of existing methods for obtaining roof topologies of buildings, an approach termed 'weak constructive solid geometry (CSG) primitives' is proposed. This approach is intended to fill the gap between B-rep and CSG modelling, combining advantages of both
