The Terrain module contains a range of products required for terrain production, of which the DEM (Digital Elevation Mode) indicates that the bare earth surface (vegetation and other objects are removed), the DSM (Digital Surface Model) represents the surface characteristics of terrain and other objects (e.g. tree canopy), and CHM (Canopy Height Model) indicates the normalized height of vegetation and ground objects. Hillshade maps can be created by any digital model for visualization.

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