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Terrain model

A detailed and accurate terrain model (DTM / DEM) can be established from laser data. The terrain model is established either by using only points defined as terrain in laser data, or in combination with break lines.

Laser data provides large amounts of data and often it will be practical to reduce the amount of data in the finished terrain models. This is done by screening the points where the break points in the terrain are retained and points that do not significantly affect the model are excluded.

Terrain models are supplied as seamless triangular (TIN) surface models, where properties can be added within defined areas. These properties can be obtained from field battle models or according to their own wishes.

An accurate and reliable terrain model (DTM) will be valuable in designing new infrastructures that includes roads, railways, power lines and so forth and can be used to calculate mass transfers and costs associated with this between the builder and the contractor.