[6] [6] HYENKYUN W, YUN S.Alternating minimization algorithm for speckle reduction with a shifting technique［J］.Image Processing, 2012, 21(4): 1701-1714.

[8] [8] LI X F, XU J, LUO J J, et al.Intensity image denpising for laster active inage system using nonsubsampled contourlet transform and sure approach［J］.Optik, 2012, 123(9): 808-813.

[10] [10] SWELDENS W.The lifting scheme: a custom-design con-struction of biorthogonal wavelets ［J］.Application Compu-ter Harmonic Analysis, 1996, 3(2): 186-200.

[13] [13] HUA X, LELAND E P, FAWWAZ T.Ulaby statistical properties of logarithmically transformed speckle［J］.IEEE Transcation on Geoscience and Remote Sensing, 2002, 40(3): 721-727.