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《Science of Surveying and Mapping》 2004-06
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Airborne laser scanning altimetry data filtering

ZHANG Xiaohong~(①),LIU Jingnan~(②)(①School of Geodesy and Geomatics,Wuhan University 430079,China;②Presidential Secretariat,Wuhan University,Wuhan 430072,China)  
airborne laser scanning altimetry data filtering is one of the most important task in Lidar data processing. Filtering is to eliminate of vegetation and building points, generally offterrain points. In this paper refined methods for the restitution of airborne LIDAR data are presented which have been developed based on the rovering conicoid smoothing algorithm. The exiting methods and algorithm are reviewed briefly. And then the proposed algorithm is developed in the next sections. Several typical test sites are used to verify the proposed algorithm. Filtered results are demonstrated one by one. The method, developed in this paper, distinguishes itself in adaptation to the terrain condition. Even in steep terrain ground points and huge building, or dense covers, are classified correctly, offterrain points are eliminated.
【CateGory Index】: P228
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