Results 11 to 20 of about 24,119 (299)

A Method for Extracting Some Key Terrain Features from Shaded Relief of Digital Terrain Models

open access: yesRemote Sensing, 2020
Detection of terrain features (ridges, spurs, cliffs, and peaks) is a basic research topic in digital elevation model (DEM) analysis and is essential for learning about factors that influence terrain surfaces, such as geologic structures and ...
Meirman Syzdykbayev   +2 more
doaj   +2 more sources

Digital terrain model height estimation using support vector machine regression

open access: yesSouth African Journal of Science, 2015
Digital terrain model interpolation is intrinsically a surface fitting problem, in which unknown heights H are estimated from known X-Y coordinates.
Onuwa Okwuashi, Christopher Ndehedehe
doaj   +3 more sources

EARTHWORK VOLUME CALCULATION FROM DIGITAL TERRAIN MODELS

open access: yesJournal of Industrial Design and Engineering Graphics, 2015
Accurate calculation of cut and fill volume has an essential importance in many fields. This article shows a new method, which has no approximation, based on Digital Terrain Models. A relatively new mathematical model is developed for that purpose, which
JANIĆ Milorad   +3 more
doaj   +1 more source

Concepts of 3D terrain modeling and geomorphometric analysis in mining [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2016
This paper describes the concepts of 3D terrain models and their application in mining. The methods of terrain (relief) by spots elevation and contour lines are commonly applied on geodetic plans and topographic maps.
Petrović Vladimir M.   +3 more
doaj   +1 more source

IFCTERRAIN – A FREE AND OPEN SOURCE TOOL TO CONVERT DIGITAL TERRAIN MODELS (DTM) TO OPENBIM INDUSTRY FOUNDATION CLASSES (IFC) [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Digital Terrain Models (DTM) play an important role for digital twins of the built environment. However, if the Building Information Modeling method (BIM) is used, many engineers find it difficult to provide BIM-compliant terrain models.
C. Clemen   +3 more
doaj   +1 more source

High Resolution Digital Terrain Models of Mercury

open access: yesRemote Sensing, 2020
We refined our Shape from Shading (SfS) algorithm, which has previously been used to create digital terrain models (DTMs) of the Lunar and Martian surfaces, to generate high-resolution DTMs of Mercury from MESSENGER imagery.
Moritz Tenthoff   +2 more
doaj   +1 more source

INTEGRATION OF 3D OBJECTS AND TERRAIN FOR 3D MODELLING SUPPORTING THE DIGITAL TWIN [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
3D modelling of precincts and cities has significantly advanced in the last decades, as we move towards the concept of the Digital Twin. Many 3D city models have been created but a large portion of them neglect representing terrain and buildings ...
J. Yan   +4 more
doaj   +1 more source

VISUALISATION OF THE 3D GEODATA MODELS AND THEIR APPLICATION [PDF]

open access: yesGeodetski Glasnik, 2014
This paper describes the 3D geodata models and their application. On geodetic plans and topographic maps commonly applied methods of terrain (relief) by spots elevation and contour lines.
Mirko Borisov   +2 more
doaj   +1 more source

Quality analysis of digital terrain models for the test area Zlatibor [PDF]

open access: yesGlasnik Srpskog Geografskog Društva, 2003
Digital terrain models (DTM) have recently become products which substitute standard methods for the terrain relief presentation. As a part of a Geographic Information Systems (GIS) they represent not only a data base related to heights that are used for
Bajat Branislav, Štrbac Dragoljub
doaj   +1 more source

DEM ACCURACY RESEARCH BASED ON UNMANNED AERIAL SURVEY DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Currently, digital elevation models (DEM) created by photogrammetric method based on unmanned aerial survey data are becoming an increasingly popular product.
V. M. Kurkov, A. S. Kiseleva
doaj   +1 more source

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