相干斑噪声抑制技术研究

New method for reducing speckle noise in sar image

本文研究了一种新的合成孔径雷达相干斑噪声抑制的算法。传统的噪声抑制和近年来的小波变换方法都有其不足之处。本文结合增强Lee算法中的思想与小波算法用于抑制SAR图像中相干斑噪声,能够获得良好的效果,通过对比试验,本文算法具有较好的相干斑噪声抑制能力和边缘保持能力。

In this paper, a new method for reducing speckle noise in SAR image is dicussed. Traditional method and recently wavelet transform for reducing speckle noise have some shortcoming. The new algorithm combined the method of modified Lee and wavelet transform. Simulation results show the algorithm can reduce speckle and preserve image edge.