Study of the airborne LIDAR data filtering methods

Filter of airborne LIDAR data is a primary step of data processing. This paper reviews the literature of filter algorithms from aspects of theory and performance. The methods of filtering usually are slope-based surface-based and clustering/segmentation-based. In this paper the filtering methods of Lidar data are studied and summarized especially, the advantages and shortages of the present means are discussed. In addition, prospect is also given to provide references for future research.