Digital elevation model validation with no ground control: application to the topodata dem in Brazil [PDF]
Boletim de Ciências Geodésicas, 2014 Digital Elevation Model (DEM) validation is often carried out by comparing the data with a set of ground control points. However, the quality of a DEM can also be considered in terms of shape realism. Beyond visual analysis, it can be verified that physical and statistical properties of the terrestrial relief are fulfilled.
Polidori, Laurent +2 more
openaire +4 more sources
Morphological filling of digital elevation models [PDF]
, 2011 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 ...
d'Angelo, Pablo +3 more
core +2 more sources
Evaluation of the Accuracy of Digital Elevation Model Produced from Different Open Source Data
Journal of Engineering, 2019 This study aims to estimate the accuracy of digital elevation models (DEM) which are created with exploitation of open source Google Earth data and comparing with the widely available DEM datasets, Shuttle Radar Topography Mission (SRTM), version 3, and ...
Raghad Hadi Hasan
doaj +1 more source
Evaluation of vertical accuracy of open source Digital Elevation Model (DEM)
International Journal of Applied Earth Observation and Geoinformation, 2013 Abstract Digital Elevation Model (DEM) is a quantitative representation of terrain and is important for Earth science and hydrological applications. DEM can be generated using photogrammetry, interferometry, ground and laser surveying and other techniques.
Sandip Mukherjee +5 more
openaire +2 more sources
Model zemeljskega površja - DMR ali DMV? : Earth's Digital Surface Model - DTM or DEM? [PDF]
Geodetski Vestnik, 2002 Definition of a term digital terrain model that can be shortly described as 'digital description of the Earth's surface' was analysed. Meaning and usage of terms 'digital terrain model' or shortly DTM and 'digital elevation model' or DEM were cleared up.
Tomaž Podobnikar
doaj
An investigation of Digital Elevation Model (DEM) structure influence on flood modelling
IOP Conference Series: Earth and Environmental Science, 2018 Flood is one of the natural calamities that cause huge losses and damages. Flood hazard zonation has been widely produced to face the impact of the disaster. DEM as the primary data to construct the earth surface has been developed from rough to fine resolution. Aster GDEM v.2 within 1arc spatial resolution has an ability to derived DEM and TIN data as
null Sahid, A W Nurrohman, M P Hadi
openaire +1 more source
On the uncertainty of stream networks derived from elevation data: the error propagation approach [PDF]
, 2010 DEM error propagation methodology is extended to the derivation of vector-based objects (stream networks) using geostatistical simulations. First, point sampled elevations are used to fit a variogram model.
Heuvelink, G.B.M. +3 more
core +1 more source
Comments on “An Adaptive Terrain-Dependent Method for SRTM DEM Correction Over Mountainous Areas”
IEEE Access, 2021 This paper comments on an article published in IEEE Access (C. Zhou et al., “An Adaptive Terrain-Dependent Method for SRTM DEM Correction Over Mountainous Areas,” IEEE Access, Vol. 8, pp. 130878–130887, 2020, DOI: 10.1109/ACCESS.2020.
Kazimierz Becek
doaj +1 more source
DETERMINATION OF A TOPOGRAPHIC WETNESS INDEX USING HIGH RESOLUTION DIGITAL ELEVATION MODELS
European Journal of Geography, 2023 Topographic wetness indices (TWIs) computed from digital elevation models (DEMs) are means to forecast the amount of moisture in the soil. In this study, using sub-pixel/pixel attraction the spatial resolution of digital elevation models (DEM) was ...
Majid HOJATI, Marzieh MOKARRAM
doaj +2 more sources
OPEN-SOURCE DIGITAL ELEVATION MODEL (DEMs) EVALUATION WITH GPS AND LiDAR DATA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 Advanced Spaceborne Thermal Emission and Reflection Radiometer-Global Digital Elevation Model (ASTER GDEM), Shuttle Radar Topography Mission (SRTM), and Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010) are freely available Digital ...
N. F. Khalid +6 more
doaj +1 more source