Results 11 to 20 of about 17,023 (259)

CO-REGISTRATION OF MULTI-TEMPORAL DEM BASED ON SIFT ALGORITHM FOR CHANGE DETECTION OF GLACIERS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
To detect the change of geographic objects by using multi-temporal DEM, the data must be co-registered firstly. In this paper, the Scale-Invariant Feature Transform (SIFT) algorithm is used to co-register multi-temporal DEM data and glacier change ...
Y. Huang, Q. Hu
doaj   +2 more sources

EVALUATION OF AIRBORNE L- BAND MULTI-BASELINE POL-INSAR FOR DEM EXTRACTION BENEATH FOREST CANOPY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
DEM beneath forest canopy is difficult to extract with optical stereo pairs, InSAR and Pol-InSAR techniques. Tomographic SAR (TomoSAR) based on different penetration and view angles could reflect vertical structure and ground structure.
W. M. Li   +4 more
doaj   +2 more sources

STATISTIC TESTS AIDED MULTI-SOURCE DEM FUSION [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Since the land surface has been changing naturally or manually, DEMs have to be updated continually to satisfy applications using the latest DEM at present. However, the cost of wide-area DEM production is too high.
C. Y. Fu, J. R. Tsay
doaj   +2 more sources

DEMs of difference [PDF]

open access: yes, 2012
A key aspect of geomorphological enquiry is concerned with quantitatively monitoring\ud the development of the Earth’s surface, in a diverse set of environments, and at a range of spatial\ud scales and temporal frequencies. A variety of geomatics technologies facilitate the acquisition of\ud multitemporal survey data that can be used to construct ...
Williams, Richard
openaire   +1 more source

DEM Generation with ICESat-2 Altimetry Data for the Three Antarctic Ice Shelves: Ross, Filchner–Ronne and Amery

open access: yesRemote Sensing, 2021
The ice shelf is an important component of the Antarctic system, and the interaction between the ice sheet and the ocean often proceeds through mass variations of the ice shelf. The digital elevation model (DEM) of the ice shelf is particularly important
Tong Geng   +6 more
doaj   +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

open access: yesRemote 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   +6 more
doaj   +1 more source

Trade, price and quality upgrading effects of agri-food standards [PDF]

open access: yes, 2020
This paper assesses how cross-country differences in public mandatory food standards affect trade, prices and product quality upgrading in the agri-food sector.
Olper, Alessandro   +2 more
core   +1 more source

Modelling the dynamics of a large rock landslide in the Dolomites (eastern Italian Alps) using multi-temporal DEMs [PDF]

open access: yesPeerJ, 2018
Latest advances in topographic data acquisition techniques have greatly enhanced the possibility to analyse landscapes in order to understand the processes that shaped them.
Ricarda Gatter   +3 more
doaj   +2 more sources

RESEARCH ON A DEM COREGISTRATION METHOD BASED ON THE SAR IMAGING GEOMETRY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Due to the systematic error, especially the horizontal deviation that exists in the multi-source, multi-temporal DEMs (Digital Elevation Models), a method for high precision coregistration is needed.
Y. Niu   +8 more
doaj   +1 more source

Use of HAND terrain descriptor for estimating flood-prone areas in river basins

open access: yesRevista Brasileira de Ciências Ambientais, 2021
The flood hazard mapping in a river basin is crucial for flooding risk management, mitigation strategies, and flood forecasting and warning systems, among other benefits.
Ana Alice Rodrigues Dantas   +1 more
doaj   +1 more source

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