Results 1 to 10 of about 10,515 (145)

Ownership Protection on Digital Elevation Model (DEM) Using Transform-Based Watermarking

ISPRS International Journal of Geo-Information, 2022
This research aims to protect Digital Elevation Model (DEM) data from piracy or counterfeiting. An invisible watermark inserted into the data, which will not considerably change the data value, is necessary.
Fahmi Amhar, Endang Purnama Giri, Florence Elfriede Sinthauli Silalahi, Shelvie Nidya Neyman, Anggrahito, Dadan Ramdani, Danang Jaya, Dewayany Sutrisno, Sandi Adhitya Kolopaking, Tia Rizka Nuzula Rachma, Murdaningsih   +10 more
doaj   +2 more sources

Cost-Efficient Digital Elevation Model (DEM) Acquisition on Flume Tank Morphodynamic Observation

JGEET: Journal of Geoscience, Engineering, Environment and Technology
Digital Elevation Model (DEM) is well known for providing solutions to the theoretical and application-related problems around geosciences. The use of DEM in flume tank experiment is getting more common nowadays.
Octria Adi Prasojo, Adlirrahman Aufar, Reza Syahputra   +2 more
doaj   +2 more sources

Evaluation of the Efficiency of SfM-Photogrammetry in Obtaining DEM from Google Earth Images [PDF]

JES: Journal of Engineering Sciences, 2023
In this study, we seek to evaluate the efficiency of SfM Photogrammetry in obtaining Digital Elevation Model (DEM) from the free Google Earth browser, by simulating the aerial photography of the terrain displayed by this browser, calculating the ...
Ahmed A Elashiry, Omar Al Khalil
doaj   +1 more source

Quality assessment of open sourced digital elevation models in southeast coast of India

Egyptian Journal of Remote Sensing and Space Sciences, 2021
Digital elevation model (DEM) provides elevation values of the terrain. At present several open source DEMs are available and its vertical accuracy varies from place to place. The present study assessed the vertical accuracy of 1 arc-sec data of Advanced
Renganathan Mahesh, Kaladevi Jayadevan Sarunjith, Sambandan Rajakumari, Ramakrishnan Muruganandam, Ramachandran Ramesh   +4 more
doaj   +1 more source

Applicability of Data Acquisition Characteristics to the Identification of Local Artefacts in Global Digital Elevation Models: Comparison of the Copernicus and TanDEM-X DEMs

Remote Sensing, 2021
Several global digital elevation models (DEMs) have been developed in the last two decades. The most recent addition to the family of global DEMs is the TanDEM-X DEM.
Jana Marešová, Kateřina Gdulová, Petra Pracná, David Moravec, Lukáš Gábor, Jiří Prošek, Vojtěch Barták, Vítězslav Moudrý   +7 more
doaj   +1 more source

The Impact of Quality of Digital Elevation Models on the Result of Landslide Susceptibility Modeling Using the Method of Weights of Evidence

Geosciences, 2020
The paper discusses the impact that the quality of the digital elevation model (DEM) has on the final result of landslide susceptibility modeling (LSM).
Mirosław Kamiński
doaj   +1 more source

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

IEEE 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, Nicole Osterkamp, Ursula Marschalk, Raphael Tubbesing, Anna Wendleder, Birgit Wessel, Achim Roth   +6 more
doaj   +1 more source

Digital elevation models of TanDEM-X mission [PDF]

Biuletyn Wojskowej Akademii Technicznej, 2015
Started in 2010 TanDEM-X mission (TerraSAR-X add-on for Digital Elevation Measurement) is the first spaceborne radar interferometer mission that acquires interferometric data in bistatic InSAR stripmap mode with two spacecrafts TerraSAR-X (TSTSX) and ...
Małgorzata Woroszkiewicz
doaj   +1 more source

Reconstruction and Evaluation of DEMs From Bistatic Tandem-X SAR in Mountainous and Coastal Areas of China

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
TerraSAR-X add-on for Digital Elevation Measurements (TanDEM-X) mission is designed to generate 3-D images of the Earth as the first bistatic synthetic aperture radar (SAR).
Peng Li, Zhenhong Li, Keren Dai, Yasir Al-Husseinawi, Wanpeng Feng, Houjie Wang   +5 more
doaj   +1 more source

InSAR Elevation Inversion Method Based on Backprojection Model with External DEM

Leida xuebao, 2021
When Interferometric Synthetic Aperture Radar (InSAR) is used to obtain the Digital Elevation Model (DEM), highly sloped terrains will make interferometric fringes dense and increase the difficulty of phase unwrapping, which will affect the accuracy of ...
Xiaoning HU, Bingnan WANG, Maosheng XIANG, Zhongbin WANG   +3 more
doaj   +1 more source