digital elevation model

(redirected from Digital Surface Model)
Also found in: Acronyms.

digital elevation model

A digital map of the elevation of an area on the earth. The data are either collected by a private party or purchased from an organization such as the U.S. Geological Survey (USGS) that has already undertaken the exploration of the area. Digital elevation models are gray scale images wherein the pixel values are actually elevation numbers. The pixels are also coordinated to world space (longitude and latitude), and each pixel represents some variable amount of that space (foot, meter, mile, etc.) depending on the purpose of the model and land area involved. See remote sensing and GIS glossary.


Sample Digital Elevation Model Rendering
This scene was rendered from a USGS digital elevation model of the Grand Canyon by the RiverTools application from Rivix, LLC, Broomfield, CO (www.rivix.com). RiverTools was written in IDL, a programming language from Research Systems, Inc. that is specialized for image processing and visualization. The black area is the Colorado River at the bottom of the canyon. The red is the immediate surrounding riverbank. (Image courtesy of Research Systems, Inc. and Rivix, LLC.)
References in periodicals archive ?
Supplier shall be required to provide the services of field survey to establish Ground Control Points (GCP),acquisition of stereo satellite imagery, Digital Surface Model (DSM) , Digital Terrain Model (DTM), Normalized Digital Surface Model (NDSM), Contour map and Orthorectified imagery.
When it comes to creating Digital Surface Models (DSM), LIDAR is increasingly the technology of choice.
ICEM Surf was used throughout the car's design development, especially the interior, to create highly accurate 3D digital surface models of the vehicle.
The main scientific field of using the LiDAR data in geodesy and remote sensing is to construct the digital heights models (digital elevation models, digital terrain models, digital surface models, digital relief models) (Arrowsmith 2006; El-Sheimy et al.
As a result, their precise delineation requires accessing up-to-date, accurate and detailed Digital Surface Models.
DigitalGlobe will provide Rise Broadband, the countrys largest fixed wireless internet service provider (WISP), with Vricons high-resolution Digital Surface Model (DSM) data, to rapidly verify fixed wireless broadband service availability to households and businesses in its market areas before sending installation teams into the field.
Laser scanner survey, classification of results, calculation of the digital terrain model and calculation of the digital surface model (lot 1: Eilenburg, 1934 km 2).
Purchase of the digital surface model along external EU borders.
Laserscanningbefliegung in Bavaria 2016/2017 objective is the acquisition of terrain heights by overflight by airborne laser scanner for deriving an accurate digital terrain model (DTM) and Digital Surface Model (DOM) in Bavaria with a dot density of at least 4 Pkt.
The goal is the capture of terrain heights by aerial survey using Airborne Laser Scanner for deriving an accurate digital terrain model (DTM) and Digital Surface Model (DOM) in Bavaria with a dot density of at least 4 points.
The aim is the acquisition of terrain heights by aerial survey using airborne laser scanner for deriving an accurate digital terrain model (DTM) and Digital Surface Model (DOM) in Bavaria with a dot density of at least 4 points.
The goal is the acquisition of terrain heights by aerial survey with airborne laser scanner for deriving an accurate digital terrain model (DTM) and digital surface model (DSM) in Bavaria with a dot density of at least 4 points / mA.

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