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From: leila on 7 May 2010 09:10
comment extraire une image reconstruite apres application de wavelet
From: Wayne King on 7 May 2010 14:22
leila <leeeila12345(a)live.fr> wrote in message <335600516.89486.1273252264350.JavaMail.root(a)gallium.mathforum.org>...
> comment extraire une image reconstruite apres application de wavelet

load woman;
% analysis
[cA1,cH1,cV1,cD1] = dwt2(X,'bior3.7');
% reconstruction, you can also use idwt2
A1 = upcoef2('a',cA1,'bior3.7',1);
H1 = upcoef2('h',cH1,'bior3.7',1);
V1 = upcoef2('v',cV1,'bior3.7',1);
D1 = upcoef2('d',cD1,'bior3.7',1);
colormap(map)
subplot(211);
image(wcodemat(A1,192));
title('Approximation');
subplot(212);
image(wcodemat(V1,192));
title('Vertical Details');
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