[1] [1] Cohen A, Daubechies I,Vial P. Wavelet on the interval and fast wavelet transform.Appl Comp Harm Anal,1993,1:54～81

[3] [3] Yu Y, Weaver J B,et al.Wavelet transform domain filters: a spatial selective noise filteration technique.IEEE Trans onImage Processing,1994,3(6):747～757

[4] [4] Mallat S G, Zhong S.Singularity detection and processing with wavelet.IEEE Trans on IT, 1992,38(2):617～643

[5] [5] Donoho D L.De-noising by soft-thresholding.IEEE Trans on IT, 1995,41(3):612～627