Concept and Applications of Digital Elevation Model (DEM) | Rashid's Blog: An Educational Portal
A digital elevation model (DEM) is a digital model or 3D representation of a terrain's surface — commonly for a planet (including Earth), moon, or asteroid — created from terrain elevation data. In most cases the term digital surface model represents the earth's surface and includes all objects on it. In contrast to a DSM, the digital terrain model (DTM) represents the bare…
Source: rashidfaridi.com