一种新的SAR影像融合滤波方法

Fusion filter of the SAR image based on AMSS equation and median filter

为解决有效地去除斑点噪声和保留图像边缘两者矛盾的问题,首先通过中值滤波得到较好的平滑SAR图像,然后利用AMSS方程得到较好的保留图像边缘信息的SAR图像,最后将所得的两幅图像进行融合,并对融合后的图像进行定量和定性分析。仿真实验表明,无论是定性分析,还是定量分析都证明融合后的图像在很好地去除噪声的同时,有效地保留了图像的地物分界处及边缘细节信息。

To effectively solve the contradiction problems between speckle noise reduction and image edge preservanon, smoommg SAR image can be obtained by median filtering firstly. Then a SAR image with preserved image edge information can be gotten by AMSS equation. Finally, the two SAR images can be fused into a fusion image, which can be analyzed quantitatively and qualitatively. Simulation results show that the fusion image can reduce speckle noise and preserve detail eage informations effectively.