一种改进的极化SAR Sigma滤波法

IMPROVED SIGMA FILTER FOR SPECKLE REDUCTION OF POLARIMETRIC SAR IMAGERY

分析了Sigma滤波法进行SAR斑点噪声抑制,提出了一种改进全极化SAR影像滤波,试验表明其具有均值保持、纹理保持的良好特性。

The advantage and disadvantage of Sigma filter for SAR images are analyzed,and a new improved one is proposed.The result of experiment using single-and full-polarized SAR images show that the performances of proposed filter is better than the original one in mean,texture and polarimetric information preservation.