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：2008
卷号：XXXVII Part B4
页码：1417-1422
出版社：Copernicus Publications
摘要：Light Detection and Ranging (LIDAR) is a technology used for collecting topographic data. Nowadays there are diverse application areas of LIDAR data that include DTM generation and building extraction. 3D representations of buildings extracted from LIDAR data are often quite inaccurate regarding their location of the building edges. High resolution aerial images have the potential to accurately extract 3D straight lines of the building edges. Thus using aerial images to extract building edges accurately is an option in particular if aerial images are available in addition to LIDAR data. In this paper we present a study on straight line parameter estimation based on the line parameterisation proposed by Schenk (2004). We assume that an aerial triangulation is carried out in advance, hence the exterior orientation parameters of all images are known. The LIDAR data are used to get approximate values of straight line parameters and to simplify the line correspondence problem in the aerial images. The straight lines are extracted from the aerial images and the 3D line parameters are estimated. For extraction of straight lines in the aerial images three techniques are used. Two of them are dealing with semi-automatic straight line extraction and third one focuses on automatic line extraction using the Hough transform. Quality of the results is investigated using different number of images and different number of points measured on the building edges
