![]() The dialogue box settings are described below. The general term describing any type of raster elevation surface is digital elevation model (DEM).įrom the Workflow menu, select Build DEM…. If the elevations only represent the ground or the bare earth, the model is referred to as a digital terrain model (DTM). If the model represents elevations of the ground along with heights of structures such as buildings and trees, it can be referred to as a digital surface model (DSM). ![]() Building a DEMĪ digital elevation model is a raster image (pixels, arranged in rows and columns) with each pixel representing an elevation. Once the 3D dense point cloud is generated, the next step is to create an accurate digital elevation model (DEM), digital surface model (DSM) or digital terrain model (DTM).īefore proceeding, be sure to save the project. Chapter 2.2 – Digital Elevation Models Overview
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