![]() If you have a DEM that was derived from a point cloud (like LiDAR) then you would need to use the original point cloud to generate a bare earth surface. There is no tool in ArcGIS that automatically detects and removes things like buildings from a DEM. If you want to do that then the answer is "no". Sometimes people use "DTM" to mean "bare earth surface". If that's what you want, you could use the ArcGIS 3D Analyst extension to build a contour layer (use "Contour" tool) from the DEM, and then create a TIN (use "Create TIN" tool) from the contour feature class. DTM is used interchangeably with DEM sometimes, but since you are asking to go from DEM to DTM then you must have something specific in mind.ĭEM format is normally a raster where each pixel's value represents an elevation.ĭTM sometimes refers to non-raster formats like a Triangulated Irregular Network (TIN). ![]()
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