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：2005
卷号：XXXVI-3/W19
页码：215-220
出版社：Copernicus Publications
摘要：In this paper, airborne laserscanning data are used to select suitabel areas for the installation of photovoltaic devices automatically. Building roofs are preferable locations for photovoltaics considering shadowing effects but minimum size, exposition and slope of the roof planes have to be taken into account. To obtain such detailed information, laserscanning data combined with digital topographic data (building contour lines) are analysed. For extraction of roof planes an algorithm developed as part of a 3D building modelling system was applied. As result a mathematical description of each plane is obtained which is used to determine the required features size, exposition and slope. By means of digital contour polygons the planes and their parameters are assigned to individual buildings. The selection of favourable buildings for location of photovoltaic installations is performed by a GIS database manage- ment system. For testing purposes this method was applied to an urban area of about 4 km x 2 km with complex roof structures, building blocks etc. to prove the capabilities as well as the limitations of this approach. Problems occur at some roof planes where laser point density is lower than in other parts. In these cases more than one plane may be extracted due to significant undulations inside the point cloud. Additionally not all disturbing objects (e.g. dormers, chimneys, antennas etc.) were excluded totally (as it is necessary for photovoltaic areas). Therefore, supplementary information like aerial images should be integrated in this analysis in the future to detect and delineate the areas more precisely, which are effectively available for the application of photovoltaics
关键词：Airborne Laserscanning; 3D Modelling; Building; Application; Photovoltaics; GIS
