If you use digital maps, it is important to understand the terms and concepts like the differences between digital elevation models (DEM), digital terrain models (DTM), and digital surface models (DSM).

Geographic information system (GIS) maps can represent the surface of the earth in many different ways

Anyone using 3D mapping technology needs to understand the difference between major concepts

We compare DEM vs DTM vs DSM

We can compare three related but distinct acronyms around elevation data that you will invariably encounter when working with GIS:

• digital elevation models (DEM)

• digital terrain models (DTM)

• digital surface models (DSM)

Although they have a lot in common, these three terms have specific meanings, and each of these terms or this type of data has a specific technique for extracting, obtaining, and dealing with it

Bait of Maps has implemented many projects to produce 3D models and extract different digital models (DEM, DTS, DSM) using Stereo satellite images.