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25 September 2001 SAR speckle reduction for image analysis
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Proceedings Volume 4548, Multispectral and Hyperspectral Image Acquisition and Processing; (2001)
Event: Multispectral Image Processing and Pattern Recognition, 2001, Wuhan, China
Due to the complex signal-dependent nature of the speckle in SAR image, it is more reasonable to use different speckle descriptions and despeckling filters for different kinds of regions. A multi-description despeckling approach is presented in this paper. Based on the local statistics, the x2 test is introduced to segment the SAR image into the Gamma-distributed homogeneous regions and the more fluctuant heterogeneous regions. Then a MAP filter is used in the homogeneous regions, and a modified median filter is utilized in the heterogeneous regions. X-band airborne SAR image and synthetic image are used for illustration and comparison.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cheng Wang and Runsheng Wang "SAR speckle reduction for image analysis", Proc. SPIE 4548, Multispectral and Hyperspectral Image Acquisition and Processing, (25 September 2001);

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