Three-Band Interpolating Complex Wavelets with Stopband Zero Suppression
Bao Zheng · Dianzi xuebao · 2003
As an efficient methodology to design biorthogonal filterbanks and wavelets,the lifting scheme has been widely applied to many fields such as construction of wavelets and design of adaptive subband coders.Utilizing the three-band lifting scheme,the paper designs a novel family of biorthogonal interpolating complex wavelets with stopband zero suppression.The stopband zero suppression is a stricter design constraint than the vanishing moments,and can more effectively manipulate the stopband characteristics of filters.Unlike the traditional design,complex filterbanks and wavelets designed provide the ability to partition the positive and negative frequency components into different channels/subbands.