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arXiv · 1608.00270

New wavelet-based superresolution algorithm for speckle reduction in SAR images

Mario Mastriani
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Abstract

This paper describes a novel projection algorithm, the Projection Onto Span Algorithm (POSA) for wavelet-based superresolution and removing speckle (in wavelet domain) of unknown variance from Synthetic Aperture Radar (SAR) images. Although the POSA is good as a new superresolution algorithm for image enhancement, image metrology and biometric identification, here one will use it like a tool of despeckling, being the first time that an algorithm of super-resolution is used for despeckling of SAR images. Specifically, the speckled SAR image is decomposed into wavelet subbands, POSA is applied to the high subbands, and reconstruct a SAR image from the modified detail coefficients. Experimental results demonstrate that the new method compares favorably to several other despeckling methods on test SAR images.

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Mario Mastriani. 2016-07-31. New wavelet-based superresolution algorithm for speckle reduction in SAR images. https://arxiv.org/abs/1608.00270

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