Title :
A synergetic use of active microwave observations, optical images and topography data for improved flood mapping in the Gulf of Mexico
Author :
Temimi, Marouane ; Chaouch, Naira ; Hagen, Scott C. ; Weishampel, John ; Medeiros, Stephen ; Feyen, Jesse ; Funakoshi, Yuji ; Khanbilvardi, Reza
Author_Institution :
NOAA-CREST, City Univ. of New York, New York, NY, USA
Abstract :
This work proposes a method for detecting variation in water front between low and high tide conditions in the Gulf of Mexico area using high resolution satellite imagery. Radarsat 1, Landsat images and aerial photography from the Apalachicola region in Florida were used to test the proposed algorithm. A change detection approach was implemented through the analysis of RGB false color composites. In order to alleviate the effect of the inherent speckle in the SAR images ancillary data were used. The flood prone area was a priori delineated through the determination of lower and higher water contour lines with Landsat images and digital elevation model. This technique improved the performance of the proposed algorithm with respect to the detection technique using the entire scene.
Keywords :
digital elevation models; floods; geophysical image processing; hydrological techniques; image colour analysis; microwave measurement; oceanographic techniques; radiometry; remote sensing; tides; topography (Earth); Apalachicola region; Florida; Gulf of Mexico area; Landsat images; RGB false color composites analysis; Radarsat 1; USA; active microwave observations; aerial photography; change detection approach; digital elevation model; flood mapping; high resolution satellite imagery; high tide conditions; low tide conditions; optical images; topography data; water front variation detection; Floods; Image color analysis; Radar imaging; Remote sensing; Satellites; Tides; Radar; change detection; intertidal wetting front; optical sensors;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4577-1003-2
DOI :
10.1109/IGARSS.2011.6049363