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Proceedings Paper

A new method of SAR image speckle reduction
Author(s): Xiaorong Xue; Rongchun Zhao; Qiming Zeng
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Paper 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.

Paper Details

Date Published: 3 November 2005
PDF: 6 pages
Proc. SPIE 6043, MIPPR 2005: SAR and Multispectral Image Processing, 604334 (3 November 2005); doi: 10.1117/12.655039
Show Author Affiliations
Xiaorong Xue, Peking Univ. (China)
Rongchun Zhao, Northwestern Polytechnical Univ. (China)
Qiming Zeng, Peking Univ. (China)

Published in SPIE Proceedings Vol. 6043:
MIPPR 2005: SAR and Multispectral Image Processing
Liangpei Zhang; Jianqing Zhang; Mingsheng Liao, Editor(s)

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