Sentinel-1-based flood mapping: a fully automated processing chain

2016 ◽  
Vol 37 (13) ◽  
pp. 2990-3004 ◽  
Author(s):  
André Twele ◽  
Wenxi Cao ◽  
Simon Plank ◽  
Sandro Martinis
Author(s):  
T. Grippa ◽  
M. Lennert ◽  
B. Beaumont ◽  
S. Vanhuysse ◽  
N. Stephenne ◽  
...  

2017 ◽  
Vol 9 (4) ◽  
pp. 358 ◽  
Author(s):  
Taïs Grippa ◽  
Moritz Lennert ◽  
Benjamin Beaumont ◽  
Sabine Vanhuysse ◽  
Nathalie Stephenne ◽  
...  

2020 ◽  
Vol 12 (2) ◽  
pp. 252
Author(s):  
Cyprien Alexandre ◽  
Rosa Johary ◽  
Thibault Catry ◽  
Pascal Mouquet ◽  
Christophe Révillion ◽  
...  

In the future, climate change will induce even more severe hurricanes. Not only should these be better understood, but there is also a necessity to improve the assessment of their impacts. Flooding is one of the most common powerful impacts of these storms. Analyzing the impacts of floods is essential in order to delineate damaged areas and study the economic cost of hurricane-related floods. This paper presents an automated processing chain for Sentinel-1 synthetic aperture radar (SAR) data. This processing chain is based on the S1-Tiling algorithm and the normalized difference ratio (NDR). It is able to download and clip S1 images on Sentinel-2 tiles footprints, perform multi-temporal filtering, and threshold NDR images to produce a mask of flooded areas. Applied to two different study zones, subject to hurricanes and cyclones, this chain is reliable and simple to implement. With the rapid mapping product of EMS Copernicus (Emergency Management Service) as reference, the method confers up to 95% accuracy and a Kappa value of 0.75.


2013 ◽  
Vol 10 (6) ◽  
pp. 1617-1621 ◽  
Author(s):  
T. Esch ◽  
M. Marconcini ◽  
A. Felbier ◽  
A. Roth ◽  
W. Heldens ◽  
...  

Author(s):  
Stuart McKernan ◽  
C. Barry Carter

Convergent-beam electron diffraction (CBED) patterns contain an immense amount of information relating to the structure of the material from which they are obtained. The analysis of these patterns has progressed to the point that under appropriate, well specified conditions, the intensity variation within the CBED discs may be understood in a quantitative sense. Rossouw et al for example, have produced numerical simulations of zone-axis CBED patterns which show remarkable agreement with experimental patterns. Spence and co-workers have obtained the structure factor parameters for lowindex reflections using the intensity variation in 2-beam CBED patterns. Both of these examples involve the use of digital data. Perhaps the most frequent use for quantitative CBED analysis is the thickness determination described by Kelly et al. This analysis has been implemented in a variety of different ways; from real-time, in-situ analysis using the microscope controls, to measurements of photographic prints with a ruler, to automated processing of digitally acquired images. The potential advantages of this latter process will be presented.


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