A novel speckle filtering technique for SAR image

A new technique using an adaptive window for filtering SAR images is proposed. It is based on developing a mechanism of speckle whose lever varies with the reflectivity property of the scene. Taking account of such scene heterogeneity, the proposed scheme to search homogeneous areas with increasing window and different thresholds works as perfectly as expected in edge preservation and texture restoration of SAR images. The comparison between this new method and some well-known filters is also shown.