SAR image speckle suppression based on stack filters

Zhengyao Bai; Peikun He

doi:10.1117/12.538656

25 September 2003 SAR image speckle suppression based on stack filters

Zhengyao Bai, Peikun He

Proceedings Volume 5286, Third International Symposium on Multispectral Image Processing and Pattern Recognition; (2003) https://doi.org/10.1117/12.538656
Event: Third International Symposium on Multispectral Image Processing and Pattern Recognition, 2003, Beijing, China

Abstract

Speckle suppression is an important step in syntetic aperture radar (SAR) image processing. This paper addresses the problem of reducing speckle in SAR images by employing stack filters. Median filters have been used to successfully reduce non-Gaussian noises and impulse noises. Stack filters are a very large class of nonlinear filters that possess the threshold decomposition and the stack property. In this paper, stacking median filters are introduced. An algorithm for SAR speckle suppression based on stacking median filters is proposed. Threshold selection is also discussed. Experiments are performed using SAR images at different threshold differences to show the proposed algorithm's effectiveness.

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Zhengyao Bai and Peikun He "SAR image speckle suppression based on stack filters", Proc. SPIE 5286, Third International Symposium on Multispectral Image Processing and Pattern Recognition, (25 September 2003); https://doi.org/10.1117/12.538656

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KEYWORDS

Digital filtering

Synthetic aperture radar

Image filtering

Speckle

Nonlinear filtering

Binary data

Image processing

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