A digital elevation model (DEM) or digital surface model (DSM) is a 3D computer graphics representation of elevation data to represent terrain or overlaying...
30 KB (3,236 words) - 14:45, 26 February 2024
DTED (redirect from Digital Terrain Elevation Data)
Digital Terrain Elevation Data) is a standard of digital datasets which consists of a matrix of terrain elevation values, i.e., a Digital Elevation Model...
3 KB (280 words) - 08:43, 22 April 2024
Advanced Spaceborne Thermal Emission and Reflection Radiometer (redirect from ASTER Global Digital Elevation Model)
after 1 April 2008 has been marked as unusable. The ASTER Global Digital Elevation Model (GDEM) is available at no charge to users worldwide via electronic...
13 KB (1,082 words) - 19:12, 13 February 2024
The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the...
7 KB (573 words) - 07:27, 11 February 2024
Topography (section Digital elevation modeling)
Satellite RADAR mapping is one of the major techniques of generating Digital Elevation Models (see below). Similar techniques are applied in bathymetric surveys...
16 KB (1,968 words) - 05:19, 16 May 2024
Geographic information system (section Data modeling)
The digital elevation model, consisting of surface elevations recorded on a 30-meter horizontal grid, shows high elevations as white and low elevation as...
100 KB (13,086 words) - 09:00, 26 May 2024
widespread use. Computerized methods for watershed delineation use digital elevation models (DEMs), datasets that represent the height of the Earth's land...
30 KB (3,165 words) - 05:31, 6 May 2024
bathymetric models in shallow water. The main constituents of airborne lidar include digital elevation models (DEM) and digital surface models (DSM). The...
128 KB (14,573 words) - 13:58, 18 May 2024
Raster Product Format) USGS DEM – The USGS' Digital Elevation Model GTOPO30 – Large complete Earth elevation model at 30 arc seconds, delivered in the USGS...
23 KB (2,986 words) - 22:26, 6 January 2024
mainly as Discrete Global Grid in secondary elevation modeling. Each pixel stores values, such as surface elevation data, for display in 3D computer graphics...
6 KB (624 words) - 12:16, 4 April 2024
Terrain (section Digital terrain model)
specific landforms. A digital elevation model (DEM) or digital surface model (DSM) is a 3D computer graphics representation of elevation data to represent...
14 KB (1,592 words) - 03:56, 24 February 2023
the area between so scale may not be uniform across the image. A digital elevation model (DEM) is required to create an accurate orthophoto as distortions...
6 KB (605 words) - 14:17, 7 December 2023
USGS DEM (category Digital elevation models)
the United States Geological Survey for storing a raster-based digital elevation model. It is an open standard, and is used throughout the world. It has...
7 KB (577 words) - 05:26, 10 December 2023
Shuttle Radar Topography Mission (category Digital elevation models)
that obtained digital elevation models on a near-global scale from 56°S to 60°N,: 4820 to generate the most complete high-resolution digital topographic...
21 KB (2,107 words) - 07:49, 3 May 2024
often called a digital elevation model (DEM), which can be further used to produce digital surface models (DSM) or digital terrain models (DTM). An advantage...
5 KB (620 words) - 22:45, 20 March 2024
800 km north of Giza. In 2003, a new calculation based on a global digital elevation model obtained from satellite measurements, ETOPO2, whose data points...
8 KB (873 words) - 09:04, 26 May 2024
particularly important in geostatistics, where it is used to create a digital elevation model from a set of points on the Earth's surface (for example, spot...
5 KB (706 words) - 14:56, 23 May 2024
borders the district of Kinnaur in the south and is dominated by Jorkanden (elevation- 6473m) peaks. Jorkanden is the highest peak in the Kinner-Kailash range...
4 KB (251 words) - 11:01, 8 February 2024
GTOPO30 (category Digital elevation models)
GTOPO30 is a digital elevation model for the world, developed by United States Geological Survey (USGS). It has a 30-arc second resolution (approximately...
6 KB (128 words) - 21:28, 14 September 2023
Raised-relief map (redirect from Topographical relief model)
a raised-relief map using a 3D printer, Digital Elevation Models (DEM) are rendered into a 3D computer model, which can then be sent to a 3D printer....
13 KB (1,663 words) - 18:37, 7 October 2023
surface network modeling to a digital elevation model to find exact or approximate key cols. Since topographic maps typically show elevation using contour...
25 KB (3,044 words) - 18:53, 20 May 2024
for Digital Moving-Picture Exchange (DPX). SMPTE. doi:10.5594/SMPTE.ST268-1.2014. ISBN 978-1-68303-083-6. ST 268-2:2018 - SMPTE Standard - Digital Moving-Picture...
37 KB (1,168 words) - 07:35, 13 May 2024
built in the 11th or 12th century and abandoned by 1202. This digital elevation model shows the motte just left of centre, with the bailey to the right...
6 KB (515 words) - 14:49, 1 October 2023
relief model, sometimes also denoted as global topography model or composite model, combines digital elevation model (DEM) data over land with digital bathymetry...
8 KB (919 words) - 20:29, 11 August 2023
spatial data. It is particularly suited to handling Digital Elevation Models (DEMs) and other surface models. It is written in Java and runs on Windows, Mac...
2 KB (202 words) - 15:47, 9 January 2024
conducted a topographical analysis of Yonaguni Island using a digital elevation model and geological field investigations of the strata, rocks, and microtopography...
12 KB (1,306 words) - 15:26, 18 April 2024
vector source for topography data, often rasterized as a (raster) digital elevation model. Display list Spatial anti-aliasing Michael F. Worboys (30 October...
8 KB (837 words) - 09:04, 23 May 2024
stream networks, landforms etc.) using input digital land surface model (also known as digital elevation model, DEM) and parameterization software. Extracted...
22 KB (2,709 words) - 18:48, 11 December 2023
valleys, etc.) are called oronyms. Landforms may be extracted from a digital elevation model (DEM) using some automated techniques where the data has been gathered...
9 KB (886 words) - 19:36, 30 April 2024
software package allows the creation of orthophoto mosaics and digital elevation model (DEM). Some services the company offers include: Orthophotos are...
15 KB (1,739 words) - 16:06, 8 January 2024