Results 31 to 40 of about 124,228 (379)

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

, 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, Arrell, Arrell, Baltsavias, Bishop, Brocklehurst, Brunson, Champeney, Chen, Christensen, Cooper, Dobrin, Dragut, Felicismo, Fisher, Fisher, Flood, Florinsky, Garbrecht, Guth, Hannah, Hassan, Hengl, Hodgson, Holmes, Hunter, Hutchinson, Jenson, Klinkenberg, Kok, Kumler, Little, Liu, Miliaresis, Moore, Peucker, Pike, Prima, Rayner, Richie, Sithole, Sithole, Su, Temme, Thapa, Walker, Wilson, Wise, Wise, Wise, Wood, Wood   +51 more
core   +1 more source

A Novel Three-Dimensional Block Adjustment Method for Spaceborne InSAR-DEM Based on General Models

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Digital elevation model (DEM) generated by bistatic synthetic aperture radar interferometry (InSAR) usually has systematic plane and elevation errors. However, the DEM adjustment method based on the function model can only correct systematic elevation ...
Rui Wang, Xiaolei Lv, Li Zhang
doaj   +1 more source

Ice shelf basal melt rates from a high-resolution digital elevation model (DEM) record for Pine Island Glacier, Antarctica

The Cryosphere, 2019
. Ocean-induced basal melting is responsible for much of the Amundsen Sea Embayment ice loss in recent decades, but the total magnitude and spatiotemporal evolution of this melt is poorly constrained.
D. Shean, I. Joughin, P. Dutrieux, Ben E. Smith, E. Berthier   +4 more
semanticscholar   +1 more source

Evaluating the Vertical Accuracy of DEM Generated from ZiYuan-3 Stereo Images in Understanding the Tectonic Morphology of the Qianhe Basin, China

Remote Sensing, 2021
Currently available high-resolution digital elevation model (DEM) is not particularly useful to geologists for understanding the long-term changes in fluvial landforms induced by tectonic uplift, although DEMs that are generated from satellite stereo ...
Zhiheng Liu, Ling Han, Zhaohui Yang, Hongye Cao, Fengcheng Guo, Jianhua Guo, Yiqi Ji   +6 more
doaj   +1 more source

DEM Void Filling Based on Context Attention Generation Model

ISPRS International Journal of Geo-Information, 2020
The digital elevation model (DEM) generates a digital simulation of ground terrain in a certain range with the usage of 3D point cloud data. It is an important source of spatial modeling information. Due to various reasons, however, the generated DEM has
Chunsen Zhang, Shu Shi, Yingwei Ge, Hengheng Liu, Weihong Cui   +4 more
doaj   +1 more source

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
M P Hadi, Andy Wibawa Nurrohman, Sahid
openaire   +2 more sources

Comparative analysis of the differences between using LiDAR and contour-based DEMs for hydrological modeling of runoff generating debris flows in the Dolomites [PDF]

, 2015
Present work aims to explore the differences in hydrological modeling when using digital elevation models (DEMs) generated by points from LiDAR surveys and those digitized on the contour lines of the regional technical map (RTM) and their relevance for ...
Bernard, Martino, Degetto, Massimo, Gregoretti, Carlo   +2 more
core   +1 more source

Airborne LiDAR-Derived Digital Elevation Model for Archaeology

Remote Sensing, 2021
The use of topographic airborne LiDAR data has become an essential part of archaeological prospection, and the need for an archaeology-specific data processing workflow is well known.
Benjamin Štular, Edisa Lozić, Stefan Eichert   +2 more
semanticscholar   +1 more source

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

Towards the optimal Pixel size of dem for automatic mapping of landslide areas [PDF]

, 2017
Determining appropriate spatial resolution of digital elevation model (DEM) is a key step for effective landslide analysis based on remote sensing data. Several studies demonstrated that choosing the finest DEM resolution is not always the best solution.
Borkowski, A., Paw\u142uszek, K., Tarolli, P.   +2 more
core   +3 more sources