www.gusucode.com > wavelet 源码程序 matlab案例代码 > wavelet/BiorthogonalWaveletFromLiftingExample.m

    %% Biorthogonal Scaling and Wavelet from Lifting Scheme
% This example shows how to obtain the biorthogonal scaling and wavelet
% functions corresponding to a lifting scheme.
% Obtain the lifting scheme for the CDF 3/1 wavelet.

% Copyright 2015 The MathWorks, Inc.

lscdf = liftwave('cdf3.1');
%%
% Display the lifting scheme, which consists of two primal and one dual
% step.
Sc = displs(lscdf);
Sc
%%
% Obtain the decomposition and reconstruction filters from the lifting
% scheme.
[LoD,HiD,LoR,HiR] = ls2filt(lscdf);
%%
% Visualize the scaling and wavelet function and their duals.
bswfun(LoD,HiD,LoR,HiR,'plot');