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Recent advances in remote sensing have changed conventional ways of collecting and processing elevation data. Especially Light Detection and Ranging (LiDAR) has become one of the leading technologies for rapid acquisition of elevation data. In this paper we present a system for digital elevation model (DEM) construction from LiDAR data. First, we present a visualization technique that allows efficient representation for LiDAR data processing. This makes the data segmentation, which is the key step in DEM generatio...