Results 21 to 30 of about 1,016,336 (353)

Accuracy of points of cartographic projection of orthophotos obtained with Remotely Piloted Aircraft (RPA)

open access: yesGeografares, 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
doaj   +1 more source

Spectral filtering as a method of visualising and removing striped artefacts in digital elevation data [PDF]

open access: yes, 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
core   +1 more source

Non-affine georectification to improve the topographic fidelity of legacy geologic maps

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
Field-based geologic maps, which are among the most valuable tools of communication among geoscientists, can be expensive and time-consuming to produce or manually revise.
Yichuan Zhu   +2 more
doaj   +1 more source

Geographic Information Systems (GIS)-based spatially distributed model for runoff routing [PDF]

open access: yes, 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
core   +1 more source

Influence of camera distortions on satellite image registration and change detection applications [PDF]

open access: yes, 2008
Applications such as change detection and digital elevation model extraction from optical images require a rigorous modeling of the acquisition geometry.
Aharonson, Oded   +5 more
core   +1 more source

Hydrology Modelling-Based Biopore Infiltration Holes (BIH) Determination as River Flood Disaster Mitigation in Sewu Village, Surakarta, Central Java, Indonesia

open access: yesJurnal Geografi, 2020
Sewu Village is annually experience by river flooding. The application of Biopore Infiltration Holes (BIH) is one of the measures to reduce river flood disaster risk. This research was aimed to determine the proper location of the BIH. Hydrology tools by
Eka Wulan Safriani   +2 more
doaj   +1 more source

Comparison Workshop on a European Digital Elevation Model [PDF]

open access: yes, 2009
This document is the report of the Comparison Workshop on a European Digital Elevation Model Co-organised by the GMES Bureau (EC, DG Enterprise and Industry) and the Institute for Environment and Sustainability (EC, DG Joint Research Centre), Stresa ...
DUFOURMONT Hans Antoon Alfons   +4 more
core   +1 more source

Leading Progress in Digital Terrain Analysis and Modeling

open access: yesISPRS 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
doaj   +1 more source

Impact of interpolation techniques on the accuracy of large-scale digital elevation model

open access: yes, 2020
There is no doubt that the tremendous development of information technology was one of the driving factors behind the great growth of surveying and geodesy science.
M. Habib   +3 more
semanticscholar   +1 more source

Shaping the Global High-Resolution TanDEM-X Digital Elevation Model

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The global digital elevation model (DEM) produced by the TanDEM-X (TerraSAR-X add-on for digital elevation measurements) mission is an interferometric elevation model with unprecedented quality, accuracy, and coverage.
Martin Huber   +6 more
doaj   +1 more source

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