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Digital surface model
DSM (digital surface model) is a topographic digital model, which describes the relief and the situation on the surface. It consists of digital terrain model and represents the earth's surface, including all objects on it.
MKGT provides the creation of a digital surface models (DSM) based on satellite or aerial survey materials, followed using digital surface models for 3D modeling of cities and other terrain objects.
MKGT provides the creation of a digital surface models (DSM) based on satellite or aerial survey materials, followed using digital surface models for 3D modeling of cities and other terrain objects.
A digital surface model (digitized map) is a three-dimensional representation of the heights of the Earth's surface, including natural or man-made objects located on it.
The main data sources for creating digital surface models, digitized map and 3D modeling are:
- topographic map-provides a geographic reference that stores coordinate and elevation information about terrain features such as terrain, buildings and structures, roads, rivers, land-use contours, administrative boundaries, and so on.
- Remote sensing materials obtained in stereo mode are used to create digital surface models and orthophotos.
- a cloud of points obtained by laser scanning
The orthophoto and topographic map are used to obtain the contour of the buildings. Ground-based photos of each individual building from multiple points of view are necessary to build a photorealistic 3D model of the buildings.
The digital surface model is used in a variety of planning, analysis, visualization, and modeling applications, including:
- localities for various purposes (urban planning, architectural planning, tourism, virtual tours, etc.),
- navigation systems,
- intelligent transport systems,
- forecasting of urban risks;
- telecommunications-positioning of mobile phone transmitters;
- in the mapping of flood risk.
DSM generation
Example of the final DSM scale 1:25 000
When creating a DSM, different approaches to stereopairs' processing are used. These approaches may base on automatic, semi-automatic and interactive vectorization modes.
MKGT provides DEMs with high resolution and accuracy. We can customize DTMs and DSMs to your needs.
MKGT provides DEMs with high resolution and accuracy. We can customize DTMs and DSMs to your needs.
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