Results 21 to 30 of about 1,334,038 (373)
EVALUATION DIGITAL ELEVATION MODEL GENERATED BY SYNTHETIC APERTURE RADAR DATA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 Digital elevation model, showing the physical and topographical situation of the earth, is defined a tree-dimensional digital model obtained from the elevation of the surface by using of selected an appropriate interpolation method. DEMs are used in many
H. B. Makineci, H. Karabörk
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The New Landsat Collection-2 Digital Elevation Model
Remote Sensing, 2020 The Landsat Collection-2 distribution introduces a new global Digital Elevation Model (DEM) for scene orthorectification. The new global DEM is a composite of the latest and most accurate freely available DEM sources and will include reprocessed Shuttle ...
Shannon Franks +2 more
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Geografares, 2022 This study evaluated three orthophotos, generated from aerial surveys configured at 80 m, 100 m and 120 m in height with multirotor RPA, model Phantom 4 Pro from the company DJI coupled to Complementary Metal Oxide Semiconductor (CMOS) sensor of 1 inch ...
Agostinho Prado Alves Junior +1 more
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Geographic Information Systems (GIS)-based spatially distributed model for runoff routing [PDF]
, 1999 A method is proposed for routing spatially distributed excess precipitation over a watershed to produce runoff at its outlet. The land surface is represented by a (raster) digital elevation model from which the stream network is derived.
Maidment, David, Olivera, Francisco
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A small footprint couch‐top support device for image‐guided radiotherapy of heavy patients
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose Patients with body weights close to or above 400 lbs present unique challenges in radiation therapy since the weight limit of most treatment couches decreases as the couch‐top extends toward the treatment gantry. The purpose of this work was to develop a small footprint couch‐top support platform to safely perform image‐guided ...
Huixiao Chen +5 more
wiley +1 more source
Leading Progress in Digital Terrain Analysis and Modeling
ISPRS International Journal of Geo-Information, 2019 Digital Terrain analysis (DTA) and modeling has been a flourishing interdisciplinary field for decades, with applications in hydrology, geomorphology, soil science, engineering projects and computer sciences.
Giulia Sofia +3 more
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Spectral filtering as a method of visualising and removing striped artefacts in digital elevation data [PDF]
, 2008 Spectral filtering was compared with traditional mean spatial filters to assess their ability to identify and remove striped artefacts in digital elevation data. The techniques were applied to two datasets: a 100 m contour derived digital elevation model
Albani +51 more
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Colloquium Exactarum, 2014 Due the advances in the technology of laser scanning systems, research in several countries have been initiated with the aim of exploring the recently technological resources developed.
Wallace Felipe Francisco Cardoso +2 more
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A novel rapid method for viewshed computation on DEM through max-pooling and min-expected height [PDF]
, 2020 Viewshed computation of a digital elevation model (DEM) plays an important role in a geographic information system, but the required high computational time is a serious problem for a practical application.
Pan, Zhibin +4 more
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Statistical representation of mountain shading [PDF]
, 2004 International audienceShadows cast by the mountains themselves have a strong influence on the surface energy balance of mountainous regions. If the influence of shadows is to be included on sub-grid scales in a surface energy balance model, a statistical
Essery, R
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