A Digital Elevation Model (DEM), generated either as variably-spaced LiDAR ground points or as a raster grid, represents the terrain elevations on the earth's surface. A Digital Terrain Model (DTM) is a DEM in which terrain data has been further enhanced with breaklines, creating greater accuracy as it contains additional information defining terrain in areas where LiDAR data alone is unable to do the job effectively.
Sanborn creates high quality Digital Elevation Models (DEMs) to support specialized applications such as 3D modeling, volumetric calculations, and powerline as-built surveys.
In addition, Sanborn generates fully detailed Digital Terrain Models (DTMs) for contour generation, orthophoto rectification, and flood plain mapping.
Sample LiDAR Bare-Earth DEM Imagery--Click to Enlarge
For pricing and additional information, or to order Sanborn DEM Products, contact Sanborn customer service by phone at 1.866.SANBORN or send email to information@sanborn.com.
