Results 11 to 20 of about 47,639,871 (299)

MORPHOLOGICAL FILLING OF DIGITAL ELEVATION MODELS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Abstract. In this paper a new approach for a more detailed post processing and filling of digital elevation models (DEMs) in urban areas is presented. To reach the required specifications in a first step the errors in digital surface models (DSMs) generated by dense stereo algorithms are analyzed and methods for detection and classification of the ...
Krauß, Thomas, d'Angelo, Pablo
openaire   +7 more sources

The New Landsat Collection-2 Digital Elevation Model

open access: yesRemote 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
doaj   +2 more sources

The Comparison of Different Procedures for the Preparing of the Digital Elevation Model, Case Study: Noferest watershed, Birjand township, South Khorasan Province [PDF]

open access: yesجغرافیا و آمایش شهری منطقه‌ای, 2014
The exact estimation of qualitative and quantitative characteristics of the natural phenomena requires a great deal of time and expense. Therefore, the interpolation procedures are used as a suitable solution in the estimation of the places which are ...
Ali. Ashrafi, Mohammad Ali. Alimi
doaj   +1 more source

Use of HAND terrain descriptor for estimating flood-prone areas in river basins

open access: yesRevista Brasileira de Ciências Ambientais, 2021
The flood hazard mapping in a river basin is crucial for flooding risk management, mitigation strategies, and flood forecasting and warning systems, among other benefits.
Ana Alice Rodrigues Dantas   +1 more
doaj   +1 more source

W42 - a scalable spatial database system for holding Digital Elevation Models [PDF]

open access: yes, 2009
The design of a scalable system for holding spatial data in general and digital elevation models (DEMs) in specific has to account for the characteristics of data from various application fields.
Roth, Achim   +5 more
core   +1 more source

EVALUATION DIGITAL ELEVATION MODEL GENERATED BY SYNTHETIC APERTURE RADAR DATA [PDF]

open access: yesThe 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
doaj   +1 more source

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

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

Spatial scale analysis of landscape processes for digital soil mapping in Ireland [PDF]

open access: yes, 2013
Soil is one of the most precious resources on Earth because of its role in storing and recycling water and nutrients essential for life, providing a variety of ecosystem services.
Cavazzi, Stefano
core   +7 more sources

Creation a Digital Elevation Model Using GIS

open access: yesMuthanna Journal of Engineering and Technology, 2023
In GIS, it is essential to use the areal and space images as data references for information, but it is necessary to create digital information using software such as SURFER 8 and ARC view. These data can be furnished to create digital contour lines map
Hussein Mandeel Ashour Alkhuzaie
doaj   +2 more sources

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