Combining the analytic dual-tree complex wavelet packet transform with nonsubsampled directional filter banks,we develop a complex contourlet packet transform and apply it for SAR image despeckling.The proposed transform has good characteristics such as multi-resolution,localization,directionality and anisotropy.Furthermore,it is translation invariant and has more abundant direction components.The experiment result shows that the complex contourlet packet transform can restrain speckle noise in SAR images e...