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Wavelet analysis of satellite images for coastal watch

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3 Author(s)
Liu, A.K. ; Oceans & Ice Branch, NASA Goddard Space Flight Center, Greenbelt, MD, USA ; Peng, C.Y. ; Chang, S.Y.-S.

The two-dimensional wavelet transform is a very efficient bandpass filter, which can be used to separate various scales of processes and show their relative phase/location. In this paper, algorithms and techniques for automated detection and tracking of mesoscale features from satellite imagery employing wavelet analysis are developed. The wavelet transform has been applied to satellite images, such as those from synthetic aperture radar (SAR), advanced very-high-resolution radiometer (AVHRR), and coastal zone color scanner (CZCS) for feature extraction. The evolution of mesoscale features such as oil slicks, fronts, eddies, and ship wakes can be tracked by the wavelet analysis using satellite data from repeating paths. Several examples of the wavelet analysis applied to various satellite images demonstrate the feasibility of this technique for coastal monitoring

Published in:

Oceanic Engineering, IEEE Journal of  (Volume:22 ,  Issue: 1 )