A new method of SAR image speckle reduction

Xiaorong Xue; Rongchun Zhao; Qiming Zeng

doi:10.1117/12.655039

3 November 2005 A new method of SAR image speckle reduction

Xiaorong Xue, Rongchun Zhao, Qiming Zeng

Proceedings Volume 6043, MIPPR 2005: SAR and Multispectral Image Processing; 604334 (2005) https://doi.org/10.1117/12.655039
Event: MIPPR 2005 SAR and Multispectral Image Processing, 2005, Wuhan, China

Abstract

Traditional filtering methods can't work well in Synthetic Aperture Radar (SAR) image speckle reduction due to the existence of the speckle noise. In the paper, a new method to reduce SAR image speckle is proposed by analyzing the distribution characteristic of SAR image in wavelet domain and existing spatial filtering methods. Firstly, logarithmically transformed SAR image is decomposed with wavelet transform. Secondly, to overcome the difficulty of choosing the threshold in SAR image speckle reduction based on wavelet transform, the child images decomposed are filtered with fuzzy median value filter whose filter parameters can be self-selected. Finally, according to the child images filtered, we reconstruct the image and give exponential transform, and get the SAR image filtered. The experiment results show that the new method is efficient in SAR speckle reduction.

Citation Download Citation

Xiaorong Xue, Rongchun Zhao, and Qiming Zeng "A new method of SAR image speckle reduction", Proc. SPIE 6043, MIPPR 2005: SAR and Multispectral Image Processing, 604334 (3 November 2005); https://doi.org/10.1117/12.655039

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