how to make low frequency and high frequency subbands in DTCWT i am having counfused in this. i am using prof ivan selesnick function of cplxdual2d

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zahab ali khan
zahab ali khan 2021-12-8
编辑： zahab ali khan 2021-12-9
i am working on this function
x = rand(256);
J = 5;
[Faf, Fsf] = FSfarras;
[af, sf] = dualfilt1;
w = cplxdual2D(x, J, Faf, af);
y = icplxdual2D(w, J, Fsf, sf);
err = x - y;
max(max(abs(err)))
how i will add low frequency and high frequency subbands after the w = cplxdual2D(x, J, Faf, af) command kindly guide me one step that i can do further more

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