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Airborne LiDAR data are a powerful data source for acquisition and update of high resolution topographic information.Current airborne LiDAR systems are able to acquire densities of up to 40 points per square meter so as to build up accurate digital city models.With such information topographic,objects like buildings,roads,trees,electricity lines,and the relief can be determined.The main problem is the classification and identification of these objects from the airborne LiDAR point cloud and prec...