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The term Digital Elevation Model (DEM) is a generic description for digital imagery of elevation, topography, and/or bathymetry. It is “digital” in the sense A digital elevation model (DEM) is generally a land-surface model that attempts to accurately portray the altitude field of the topography.Evaluation of vertical accuracy of open source Digital Elevation Model (DEM) Download Free PDF. paper cover icon. paper cover thumbnail More traditional methods of DEM creation: interpolation of printed contour lines and manual photogrammetry. • RS approaches started to develop during the TECHNIQUES by M. Yakar DIGITAL ELEVATION MODEL GENERATION BY ROBOTIC TOTAL STATION INSTRUMENT D igital elevation models (DEMs) are indispensable rate DEM is