adfig04.m

来自「老外写的小波变换的工具箱」· M 代码 · 共 9 行

% adfig04 -- Adapt Figure 04: LPJS reconstruction
%
% The James-Stein Estimate is applied to Dyadic Fourier
% Coronae. This shrinker can be described as follows:
% segment the Fourier Domain into blocks of size 2^j, 
% estimate the signal strength in each block, and apply that
% scalar shrinkage to each block which is appropriate for
% the estimated signal strength. The first block begins at 
% L = 5.
%
% Despite the promising connection with classical multivariate
% shrinkage, the estimator has a disappointing visual appearance.
%
global yblocks ybumps yheavi yDoppler
global L t
%
%clf;
%
[xhat,xw] = CoronaJS(yblocks,L);
versaplot(221,t,xhat,[],' 4 (a) LPJS[Blocks]',[],[])
[xhat,xw] = CoronaJS(ybumps,L);
versaplot(222,t,xhat,[],' 4 (b) LPJS[Bumps]',[],[])
[xhat,xw] = CoronaJS(yheavi,L);
versaplot(223,t,xhat,[],' 4 (c) LPJS[HeaviSine]',[],[])
[xhat,xw] = CoronaJS(yDoppler,L);
versaplot(224,t,xhat,[],' 4 (d) LPJS[Doppler]',[],[])

    
    
    
 
 
%
%  Part of Wavelab Version 850
%  Built Tue Jan  3 13:20:41 EST 2006
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