how to convert an image into low frequency and high frequency subbands using DWT
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while using dwt2 it gives 4 sub bands as LL LH HL HH but i need only as Low and High
if we take the LL and HH from dwt2 some of the details are missing how to do in matlab
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Michael scheinfeild
2014-9-18
0 个投票
[cA,cH,cV,cD] = dwt2(X,'wname')
it gives you the sub bands you need of course it not gives all info if you take only two bands , you can try to filter or threshold http://www.mathworks.com/help/wavelet/ref/dwt2.html
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