[4] J. S. Lee. Speckle suppression and analysis for synthetic aperture radar images[J]. Opt. Eng., 1986, 25(5):636~643
[5] Runtao Ding, A. N. Venetsanopools. Generalized homomorphic and adaptive order statistic filters for the removal of impulsive and signal-dependent noise[J]. IEEE Trans. on Circuits and Systems, 1987, 34(8):948~955
[6] F. Sattar, L. Floreby, G. Salomonsson et al.. Image enhancement based on a nonlinear multiscale method[J]. IEEE Trans. on Image Processing, 1997, 6(6):888~895
[7] J. W. Goodman. Some fundamental properties of speckle[J]. J. Opt. Soc. Am., 1976, 66(11):1145~1150
[8] S. G. Mallat. Multifrequency channel decompositions of images and wavelet models[J]. IEEE Trans. on ASSP, 1989, 37(12):2091~2110