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Digital Terrain Mapping

The terms Digital Terrain Model (DTM) and Digital Elevation Model (DEM) are used to distinguish surface models suitable for contour generation and design work from those suitable for orthophoto generation respectively. Triangulated Irregular Network (TIN) is created from mass points and breaklines collected in a 3D Stereo environment. Quality Control procedures ensure that all the surface data is viewed against the background of the 3D stereo model to meet the project specifications. The TIN is used to generate contours using a variety of program to allow for smoothness and accurate cartographic representation.

Digital Surface Model (DSM), Digital Terrain Model (DTM) and Digital Elevation Model (DEM) are height models produced by Adepto, the models are suitable for both Topo and Ortho production