基于分割途径的SAR单视图像斑点噪声抑制方法

燕英; 周荫清

基于分割途径的SAR单视图像斑点噪声抑制方法

燕英,
周荫清

北京航空航天大学电子工程系

详细信息

中图分类号: TN 957.2
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- 文章访问数: 1886
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- 被引次数: 0
出版历程
- 收稿日期: 2001-11-26
- 网络出版日期: 2003-02-28

Speckle Filtering Based on Segmentation for Monolook SAR Images

Dept. of Electronic Engineering, Beijing University of Aeronautics and Astronautics

摘要

摘要: 在图像分割思想的基础上,结合合成孔径雷达(SAR)图像的区域特征,利用恒虚警率边沿检测技术将分割区域最大化,并在分割区域内根据SAR图像特性进行优化滤波,得到了一种基于图像分割的单视SAR图像降斑方法.其中,边沿检测和区域分割在多视图像中进行,保证了检测和分割的有效性.计算机仿真结果证明了该方法的优越性.
- 合成孔径雷达 /
- 噪声抑制 /
- 空间分辨率 /
- 图像分割 /
- 边沿检测
Abstract: A segmentation based method was proposed for speckle-reduction of synthetic aperture radar(SAR) monolook images. Taking explicitly into account the characteristics of areas in a SAR monolook image, this method maximizes a given area with the help of edge detection with constant false alarm rate, and applies optimum filtering in the segmented area. Moreover, edge detection and image segmentation in the multilook image assure the effectiveness of the operations. Comparing with typical speckle filters, experimental results suggest that the proposed filter is an excellent alternative in speckle suppression.
- synthetic aperture radar /
- noise suppression /
- space resolution /
- image segmentation /
- edge detection

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参考文献(1)

[1] Lopes A, Touzi R, Nezry E. Adaptive speckle filters and scene het -erogeneity[J].IEEE Trans Geosci Remote Sensing, 1990, 28(6):992~1000 [2] Donoho D L. De-noising by soft-thresholding[J]. IEEE Trans Information Theory, 1995, 41(3):613~627 [3] Foucher S, Benie B G, Boucher J M. Multiscale MAP filtering of SAR images[J]. IEEE Trans Image Processing, 2001, 10(1):49~60 [4] Valentin V Z, Vadimir V Z. Analysis of the speckle suppression algorithms based on the MAP approach. EUSAR, 1996.159~162 [5] Nezry E, Lopes A, Touzi R. Detection of structural and textural features for SAR images filtering. IGARSS, 1991.2169~2172 [6] Touzi R, Lopes A, Bousquet P. A statistical and geometrical edge detector for SAR images[J]. IEEE Trans Geosci Remote Sensing, 1988,26(6):764~773 [7] Fjortoft R, Lebon F, Sery F, et al. A region-based approach to the estimation of local statistics in adaptive speckle filters. IGARSS,1996.457~459 [8] Gibson C J. A new adaptive speckle filter for SAR images. Geomatics in the Era of Radarsat, 1997 [9] Ulaby F T, Kouyate F, Brisco B, et al. Textural information in SAR images[J]. IEEE Trans Geosci Remote Sensing, 1986, 24(2):235~245 [10] Lopes A, Nezry E, Touzi R, et al. Maximum a posteriori speckle filtering and first order texture models in SAR images. IGARSS, 1990. 2409~2412 [11] 李春升, 燕英, 陈杰, 等. 高分辨率星载SAR单视图像斑点噪声抑制实现方法[J],电子学报, 2000, 28(3):13~16 Li Chunsheng, Yan Ying, Chen Jie, et al. Speckle reduction for high resolution one-look spaceborne SAR images[J]. Acta Electronica Sinica, 2000, 28(3):13~16 (in Chinese) [12] 柳重堪. 信号处理的数学方法[M]. 南京:东南大学出版社, 1992 Liu Chongkan. Mathematical methods in signal processing[M]. Nanjing:Southeast University Press, 1992 (in Chinese)

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