adfig09.m

老外写的小波变换的工具箱

% adfig09 -- Adapt Figure 09: Haar Coefficients of the Four Functions
%
% Here we display the wavelet coefficients of the four functions,
% stratified by scale and location.  The significant coefficients
% occur in locations of significant spatial variability.  For
% locally smooth functions, the coefficients tend to be small
% at fine scales.  The coefficients do not decay with scale as 
% rapidly as the coefficients in an S8 wavelet expansion. This
% is particularly evident by comparing (Panel d) of this figure
% with (Panel d) of the previous figure.
%

global Blocks Bumps HeaviSine Doppler
HaarQMF = MakeONFilter('Haar');
HL = 3;
%clf;
% 
   subplot(221)
   xw = FWT_PO(Blocks,HL,HaarQMF);
   IMJPlotWaveCoeff(xw,HL,0.);
   title(' 9 (a) Haar[Blocks] ')
%
   subplot(222)
   xw = FWT_PO(Bumps,HL,HaarQMF);
   IMJPlotWaveCoeff(xw,L,0.);
   title(' 9 (b) Haar[Bumps] ')
%
   subplot(223)
   xw = FWT_PO(HeaviSine,HL,HaarQMF);
   IMJPlotWaveCoeff(xw,HL,0.);
   title(' 9 (c) Haar[HeaviSine] ')
%
   subplot(224)
   xw = FWT_PO(Doppler,HL,HaarQMF);
   IMJPlotWaveCoeff(xw,HL,0.);
   title(' 9 (d) Haar[Doppler] ')
%
    
    
 
 
%
%  Part of Wavelab Version 850
%  Built Tue Jan  3 13:20:41 EST 2006
%  This is Copyrighted Material
%  For Copying permissions see COPYING.m
%  Comments? e-mail [e-mail]