计算机工程 ›› 2010, Vol. 36 ›› Issue (1): 229-230,.doi: 10.3969/j.issn.1000-3428.2010.01.079

• 图形图像处理 • 上一篇    下一篇

自适应边缘保护的SAR图像降斑算法

李富城,周利莉,李 磊,闫 镔   

  1. (解放军信息工程大学信息工程学院,郑州 450002)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-01-05 发布日期:2010-01-05

Adaptive Edge-preserving Algorithm for SAR Image Despeckling

LI Fu-cheng, ZHOU Li-li, LI Lei, YAN Bin   

  1. (Institute of Information Engineering, PLA Information Engineering University, Zhengzhou 450002)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-01-05 Published:2010-01-05

摘要: 针对以往SAR图像相干斑抑制算法中存在的难以兼顾均匀区域平滑和边缘细节保护的不足,提出一种自适应边缘保护的SAR图像降斑算法。采用方差系数、均值比值和空间相关性等信息作为滤波器权重分配因子。实验结果表明,综合运用以上3种图像的局部邻域信息,该算法在均匀区域平滑和边缘保护两方面都有较好的效果。

关键词: SAR图像, 相干斑抑制, 边缘保护

Abstract: To solve the shortage of the existing despeckling algorithms which can not suppress the noise and preserve the edge at the same time, an adaptive edge-preserving algorithm for Synthetic Aperture Radar(SAR) image despeckling is proposed. Relative deviation, ratio of averges and spatial correlation of pixels are applied to distribute the weight for the filter. Due to the use of the three kinds of local information synthetically, experimental results show that better performances are achieved both in area smoothing and edge preserving.

Key words: Synthetic Aperture Radar(SAR) image, speckle reduction, edge preserving

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