The difference between DEM(Digital Elevation Model), DSM(Digital Surface Model) and DTM(Digital Terrain Model​)

Jul 07, 2023

DEM

DEM, Digital Elevation Model, is a 3D computer graphic representation of elevation data.

DSM

DSM, Digital Surface Model, represents the earth's surface and includes all objects on it, generally used in landscape modeling, urban modeling and visualization applications.

DTM

DTM, Digital Terrain Model, represents bare ground without any objects such as plants and buildings, and is often used for flood or drainage modeling, land use studies, geological applications, and other applications.