We harness earth imagery to craft precise information products, including Digital Elevation Models derived from point data capturing longitude, latitude, and height coordinates. Our expertise spans a wide range of high-accuracy elevation models tailored for diverse 3D mapping needs. Whether you require custom digital elevation or surface modeling for urban mapping, forestry, land management, or mining, we deliver specialized solutions to meet your exacting standards.
Alpha Geo Solution Digital Elevation Modeling (DEM), Digital Terrain Modeling (DTM) and Digital Surface Modeling (DSM) Services
Different types of DEMs and their uses
Digital Elevation Models (DEMs) provide essential elevation data, unlike traditional 2D maps lacking height information. This data is crucial for 3D mapping workflows, ensuring accurate representation of objects in three-dimensional space. DEM variants such as Digital Terrain Models (DTMs), Digital Surface Models (DSMs), and Digital Height Models (DHMs) offer specific insights: DSMs capture all surface features including buildings, vegetation, and infrastructure, while DTMs focus on terrain elevation, enabling precise contour generation based on project requirements.
DEMs play a vital role in GIS applications, supporting geology studies, relief mapping, land management, and flood modeling. Elevation data is extracted through advanced techniques like photogrammetry from stereo imagery or LiDAR and interferometric synthetic aperture radar (IFSAR) data, ensuring comprehensive spatial analysis and visualization capabilities.
