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How to seperate LL subband in dwt

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Beginner in 2015-5-29
回答： B.k Sumedha 2015-5-29
I am working on simple dwt2 command. I have shown the LL, LH, HL, HH subband in the figure. Now I need to work on LL subband. So how can I seperate LL out for its further processing

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B.k Sumedha
B.k Sumedha 2015-5-29
[LL,LH,HL,HH] = dwt2(X,'db1'); % x is input image
figure;imshow(LL); % shows LL subband

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