DocumentCode :
326264
Title :
Automatic internal wave detection and location from SAR images
Author :
Ródenas, Josep A. ; Garello, René
Author_Institution :
Dept. ITI, Ecole Nat. Superieure des Telecommun. de Bretagne, Brest, France
Volume :
2
fYear :
1998
fDate :
6-10 Jul 1998
Firstpage :
927
Abstract :
An efficient method for automatic extraction of internal wave features present in satellite images is described. The utility of wavelet analysis as a tool for oceanic internal wave detection and location from SAR images is then examined using the 2D wavelet transform based on the multiscale edge/gradient detection method. The authors show that the evolution of local maxima of the wavelet transform across scales characterize the local shape of these quasi-linear periodic structures. The results from this study show that wavelet analysis is an excellent tool to automatically detect and locate internal waves from SAR images against background noise and internal wave look-alikes
Keywords :
geophysical signal processing; oceanographic techniques; radar imaging; remote sensing by radar; synthetic aperture radar; SAR image; automatic detection; automatic extraction; dynamics; gravity wave; internal wave; location; measurement technique; multiscale edge gradient detection method; ocean; quasilinear periodic structure; radar imaging; radar remote sensing; synthetic aperture radar; two dimensional wavelet transform; wavelet analysis; Background noise; Image analysis; Image edge detection; Ocean temperature; Radar imaging; Rough surfaces; Satellites; Surface roughness; Wavelet analysis; Wavelet transforms;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4403-0
Type :
conf
DOI :
10.1109/IGARSS.1998.699629
Filename :
699629
Link To Document :
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