Results 11 to 20 of about 60,002 (245)

A PHASED CREATION OF DIGITAL ELEVATION MODEL FOR HYDRODYNAMIC MODELING IN FLAT ZONES

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2022
Hydrodynamic modeling of rivers with flood simulation requires an accurate description of the riverbed and inundation morphology. Depending on a geodetic survey method and data collected, the digital elevation models with different accuracy can be ...
Borko Radivojević   +3 more
doaj   +1 more source

Spatio-temporal prediction of water production in basins without records

open access: yesDyna, 2022
This study carried out the spatio-temporal prediction of water production in two micro-basins without records, located in Venezuela. Geomorphological characteristics of micro-basins were obtained using digital elevation models acquired from ALOS PALSAR ...
Adriana Mercedes Marquez   +3 more
doaj   +1 more source

Error Characteristics of Pan-Arctic Digital Elevation Models and Elevation Derivatives in Northern Sweden

open access: yesRemote Sensing, 2021
Many biochemical processes and dynamics are strongly controlled by terrain topography, making digital elevation models (DEM) a fundamental dataset for a range of applications. This study investigates the quality of four pan-Arctic DEMs (Arctic DEM, ASTER
Martin Karlson   +2 more
doaj   +1 more source

Digital Elevation Models

open access: yes, 2020
Digital elevation models (DEMs) represents the elevation of the earth’s surface in the form of a digital image where each pixel contains an elevation value of the center point of the pixel. DEMs are a primary input to any modeling or process quantification involving the earth’s topography and ...
Louise Croneborg   +4 more
openaire   +3 more sources

Comparison оf Digital Relief Models

open access: yesНаука. Инновации. Технологии, 2023
Introduction. GIS technologies make it possible to analyze large amounts of spatial data, which include digital elevation models derived from remote sensing data.
S. A. Antonov, S. V. Peregudov
doaj   +1 more source

Protection of Digital Elevation Model—One Approach [PDF]

open access: yesApplied Sciences, 2022
The quality of DEMs is especially being considered based on the spatial resolution of the created digital models and the type of terrain of the interest area. DEM analysis was performed specifically for LiDAR-based DEMs, as well as a comparison with results obtained using the radar recording method (Shuttle Radar Topography Mission). The application of
Ivan Vulić   +6 more
openaire   +2 more sources

EVALUATING DIFFERENT WATER-LAND-BOUNDARY APPROXIMATIONS TO IMPROVE SAR-DERIVED DIGITAL ELEVATION MODELS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
The coastline of the German Wadden Sea is constantly subjected to the tides and the tidal-induced environmental changes like erosion and accumulation of sediments need to be monitored constantly.
B. Schneider   +7 more
doaj   +1 more source

Comparison of Point Accuracies on Digital Elevation Model Obtained from Digital Air Photographs with Different Specifications

open access: yesInternational Journal of Environment and Geoinformatics, 2019
Photogrammetry is a map production technique or science applied by measurements made from terrestrial images with terrestrial cameras or more commonly used images taken with airborne cameras.
Aydan Yaman   +2 more
doaj   +1 more source

THE RATIONAL POLYNOMIAL COEFFICIENTS MODIFICATION USING DIGITAL ELEVATION MODELS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The high-resolution satellite imageries (HRSI) are as primary dataset for different applications such as DEM generation, 3D city mapping, change detection, monitoring, and deformation detection. The geo-location information of HRSI are stored in metadata
F. Alidoost, A. Azizi, H. Arefi
doaj   +1 more source

GERAÇÃO DE MODELO DIGITAL DE TERRENO POR MEIO DA FILTRAGEM DE DADOS OBTIDOS POR VARREDURA A LASER UTILIZANDO UM MÉTODO BASEADO NO PRINCÍPIO DA DECLIVIDADE

open access: yesColloquium 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
doaj   +1 more source

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