Spatially adaptive nonlocal total variation for PolSAR despeckling

In this paper, we present two spatially adaptive nonlocal total variation methods for the speckle filtering of synthetic aperture radar (SAR) images. One is for the despeckling of SAR intensity images, and the other one is for full polarimetric SAR (PolSAR) images. Experiments were conducted on two simulated images and an airborne PolSAR images to illustrate the filtering performances, and the results show that the proposed methods effectively reduces speckle, retains edges and targets, and preserves the polarimetric scattering mechanisms.