THREE-DIMENSIONAL MODELLING OF BREAKLINES FROM AIRBORNE LASER SCANNER DATA

摘要: Airborne laserscanning allows a very detailed sampling of the landscape within more or less automated recording procedure. For representation models computed on basis this data mostly raster triangulated irregular networks (TINs) are used, which do only implicitly store breakline information. high quality surface modelling breaklines must be explicitly stored structure. Therefore 3D vector is necessary. This paper presents method for not from airborne laser scanner but any kind point cloud data. The based pairwise intersection robustly estimated elements along breakline. It original distributed clouds even in wooded areas. procedure 2D approximation required. one section concentrates determination these initial values order to automate process. Results presented an examples section. A summary with outlook future developments concludes paper.