A CGMRF-Like based Technique for Speckle Reduction in SAR Images

Abstract

Synthetic aperture radar (SAR) images are corrupted by multiplicative speckle noise, which will influence the human interpretation and computer-aided scene analysis. In this paper, we propose a CGMRF-like based technique for speckle reduction of SAR images. Unlike active line elements of CGMRF, the static line elements are determined once for the SAR images by modified Touzi's edge detector, and used to guide the despeckling process. So we refer to this as CGMRF-like based technique. Experimental results demonstrate that our proposed approach can not only reduce speckle effectively, but also preserve edge features.