i've used the undecimated wavelet transform...i dont know how to extract low frequency and high frequency component out of it. the code is shown below.can anybody help me in doing so?

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Raman
Raman 2013-4-13
the code i wrote is ;
grayImage=rgb2gray(imread('inputImage'));
w1=ndwt2(grayImage,1,'haar');
w1.filters;
w1.dec;
LL=w1.dec{1}; %low frequency component
HH=w1.dec{4}; %high frequency component
the component i extracted at level 1(n=1) corresponding to LL and HH are correct or not???
plz tell me

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