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 2013-4-13

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/71873-i-ve-used-the-undecimated-wavelet-transform-i-dont-know-how-to-extract-low-frequency-and-high-freq

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???