function x=uwt(y)

y=double(imread('barbara.png'));

T=size(x);
%2.正變換
fname='9-7';
[h0,h1,g0,g1] = atrousfilters(fname);

yy = atrousdec(y,fname,3);

x=atrousrec(yy,fname);
%%%%%%%%%%%%%%%%%%%  4.繪圖
figure(1);
imagesc( y, [0, 255] ); 
colormap(gray);
axis image off;
title('源圖像');
figure(2);
imagesc( x, [0, 255] ); 
colormap(gray);
axis image off;
title('重構圖像');