Speckle Suppression of SAR Images Based on Adaptive Windowing
Gong Zhang · Radar & Ecm · 2003
A new adaptive windowing algorithm for speckle noise suppression is proposed, solving the problem of window size associated with the local statistics adaptive filter. In the algorithm,the window size is automatically adjusted according to regional characteristics to suppress speckle noise as much as possible while preserving fine details. Speckle noise suppression gets stronger in homogeneous regions as the window size increases succeedingly. In fine detail regions,edges and textures are preserved by reducing the window size successively. The fixedwindow filtering schemes and the proposed one are applied to SAR images to demonstrate the excellent performance of the adaptive windowing algorithm for speckle noise.