标题：Contributions for the Extraction of Rock Edges from Airborne Laser Scanner Data - Case Study of Elbe Sandstone Formations in the National Park Saxon Switzerland
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：XXXVI-8/W2
出版社：Copernicus Publications
摘要：Traditional methods of topographic modelling meet their limits if applied to rock formations in forested areas. Airborne laser scanning collects densely distributed data of the reflecting surfaces with highest spatial accuracies. Forest canopies as well as ground surfaces can be detected. Airborne laser scanning meets its limits, if the terrain is covered by very dense forest stands, as penetration of the canopy will not be possible even under very high laser pulse frequencies. On the other hand, similar surface heights of forest canopies and adjacent rock surfaces create problems of classification in particular when using the Robust Hierarchic Filtering approach (SCOP software).
关键词：Manuscripts; Proceedings; ISPRS Archives; Guidelines for Authors; Styleguides; CDROM
