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：2003
卷号：XXXIV-3/W13
出版社：Copernicus Publications
摘要：Within the paper the applicability of SAR imagery for 3D reconstruction of urban areas will be discussed. Since data collection for this purpose is usually based on stereo imagery or dense point clouds from airborne laser scanning, in the first part of the paper the main properties SAR systems will be compared to this standard airborne data collection. In this respect, advantages of SAR image collection like range and weather independence contrast with the usually lower quality of geometric and radiometric data due to the side-looking capability of this systems. This lower quality even increases the problems of automatic 3D data collection in urban areas compared to the evaluation of aerial images or LIDAR data. For this reason, our approach aims on the application of SAR imagery for change detection and semi-automatic building reconstruction. In order to fulfil this task, a user interface to generate 3D vector models is combined with a SAR simulator. By these means, simulated SAR imagery can be generated based on existing 3D city models and compared to real images for change detection. By interactive manipulation of the 3D object shapes, which are used as input data for the simulator, operators can be trained for the interpretation of SAR images. Additionally, this tool can be applied for semi-automatic building reconstruction
关键词：SAR; SAR simulation; building reconstruction; city model; semi-automation
