A digital surface model or DSM is a digital representation of ground surface topography including all objects (houses, bridges, trees, etc). DSMs are often used in geographic information systems (GIS) and Computer Aided Design (CAD) environments, and are the most common basis for digitally-produced relief maps and true orthophotos. Industries such as mining, dredging, heavy engineering construction, often rely on topographic ground surveyors for ground measurements and for accurate DSMs.

When the terrain to be measured is rather large - typically tens of hectares to many square kilometers, our visual, aerial mapping solution is more efficient than ground survey work, which can take many days or weeks to complete, depending on the terrain. Our solution also allows for the creation of very dense point clouds, similar in density to a typical aerial LIDAR scanner, but with the advantage of requiring less demanding and costly equipment.

The point cloud density and accuracy that can be obtained is comparable to LiDAR results with a planimetric accuracy (XY plane) of 5 cm and a height accuracy (Z axis) of 10 cm at default altitude. Our software also supports the import of Ground Control Points (GCPs) which results in highly accurate georeferencing.

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DEM Creation
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