Wavelet packet-based nonlinear speckle reduction in optical synthetic aperture radar image analysis

Khan M. Iftekharuddin; Theresa A. Tuthill

doi:10.1117/12.236003

22 March 1996 Wavelet packet-based nonlinear speckle reduction in optical synthetic aperture radar image analysis

Khan M. Iftekharuddin, Theresa A. Tuthill

Proceedings Volume 2762, Wavelet Applications III; (1996) https://doi.org/10.1117/12.236003
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

A new technique for efficient speckle reduction in synthetic aperture radar (SAR) images using wavelet packets is proposed. A phenomenological approach is used in adapting the wavelet packet transform to minimize the speckle coefficients. With thresholding and averaging, the resulting non-linear, multirate filtering can be used to preprocess images for reduction of speckle while retaining contrast in key objects necessary for target classification. An example of the algorithm using a SAR image is provided.

Citation Download Citation

Khan M. Iftekharuddin and Theresa A. Tuthill "Wavelet packet-based nonlinear speckle reduction in optical synthetic aperture radar image analysis", Proc. SPIE 2762, Wavelet Applications III, (22 March 1996); https://doi.org/10.1117/12.236003

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