Results 1 to 10 of about 875 (117)

DEM-based topographic change detection considering the spatial distribution of errors

Geo-spatial Information Science
Digital Elevation Model (DEM) errors tend to be spatially correlated, inevitably affecting DEM-based topographic change detection. Traditional topographic change detection methods often ignore the spatial distribution of the DEM error. This paper aims to
Yufeng He, Shaohua Lei, Wen Dai, Xi Chen, Bo Wang, Yehua Sheng, Hui Lin   +6 more
doaj   +3 more sources

Estimating the Evolution of a Post-Little Ice Age Deglaciated Alpine Valley through the DEM of Difference (DoD)

Remote Sensing, 2023
Since the end of the Little Ice Age (LIA, ~1830), the accelerated glaciers’ shrinkage along mid-latitude high mountain areas promoted a quick readjustment of geomorphological processes with the onset of the paraglacial dynamic, making proglacial areas ...
Roberto Sergio Azzoni, Manuela Pelfini, Andrea Zerboni   +2 more
doaj   +3 more sources

Detection of Beach–Dune Geomorphic Changes by Means of Satellite and Unmanned Aerial Vehicle Data: The Case of Altamura Island in the Gulf of California

Coasts, 2023
Although sandy islands in arid environments are vital protection sites for endemic species, they face constant natural and anthropogenic hazards, such as storm surge impacts and the occasional presence of off-road vehicles.
Francisco Flores-de-Santiago, Luis Valderrama-Landeros, Julen Villaseñor-Aguirre, León F. Álvarez-Sánchez, Ranulfo Rodríguez-Sobreyra, Francisco Flores-Verdugo   +5 more
doaj   +1 more source

Comparison and analysis of CryoSat DEM and the several Antarctic DEM

地质科技通报, 2021
Antarctica is covered by huge snow and ice, and its geological structure is bounded by the Trans-Antarctic Mountains, and is generally divided into the East Antarctic Shield and the West Antarctic Active Zone.
Wenli Yue, Yusen Dong, Abudula-Abudukadier, Jingyue Cui, Bangzheng Zhang   +4 more
doaj   +1 more source

Multi-temporal UAV based repeat monitoring of rivers sensitive to flood

Journal of Maps, 2021
Multi-temporal repeat monitoring of flood-vulnerable rivers is crucial due to rapid alteration of morphological properties of in-channel landforms. Besides, the characteristics of the river crossing bridges may deteriorate due to flood induced scouring ...
Orkan Özcan, Okan Özcan
doaj   +1 more source

The limits of watershed delineation: implications of different DEMs, DEM resolutions, and area threshold values

Hydrology Research, 2022
Abstract Identifying and demarcating watershed areas provides a basis for designing and planning for water resources. In this study, DEMs-based estimates of watershed characteristics of three rivers of Bangladesh – Halda, Sangu, and Chengi – were derived using eight Digital Elevation Models (DEMs) of 30 m, 90 m, and 225 m resolution in ...
Srijon Datta, Shyamal Karmakar, Symon Mezbahuddin, Md. Maruf Hossain, B. S. Chaudhary, Md Enamul Hoque, M. M. Abdullah-Al-Mamun, Tarit Kumar Baul   +7 more
openaire   +2 more sources

Las2DoD: Change Detection Based on Digital Elevation Models Derived from Dense Point Clouds with Spatially Varied Uncertainty

Remote Sensing, 2022
The advances of remote sensing techniques allow for the generation of dense point clouds to detect detailed surface changes up to centimeter/millimeter levels.
Gene Bailey, Yingkui Li, Nathan McKinney, Daniel Yoder, Wesley Wright, Robert Washington-Allen   +5 more
doaj   +1 more source

ACCURACY EVALUATION OF COASTLINE EXTRACTION METHODS IN REMOTE SENSING: A SMART PROCEDURE FOR SENTINEL-2 IMAGES [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Different algorithms are available in literature to extract coastline from remotely sensed images and different approaches can be adopted to evaluate the result accuracy.
E. Alcaras, P. P. Amoroso, F. G. Figliomeni, C. Parente, G. Prezioso   +4 more
doaj   +1 more source

Orthorectification of IKONOS and impact of different resolution DEM [PDF]

Geo-spatial Information Science, 2006
IKONOS image has been wildly used in city planning, precision agriculture and emergence response. However, the accuracy of IKONOS Geo product is limited due to distortion caused by terrain relief. Orthorectification was performed to remove the distortion and the impact of different DEM on orthorectification were evaluated.
Xu Junfeng, Huang Jingfeng
openaire   +1 more source

Comparison of different interpolation methods for DEM production [PDF]

International Journal of Advanced Trends in Computer Science and Engineering, 2019
Spatial interpolation, or the estimation of the variables at unobserved locations in geographic space based on the values at observed locations, is fundamental in all geophysical sciences, first of all for the construction of digital elevation model (DEM).
ALCARAS, EMANUELE, Parente C., Vallario A.   +2 more
openaire   +1 more source