Wavelets stuffs: why does the 'Wavedec2' output has been divided into 'dd','ad','da'? what do they mean?
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Actually I am using pywavelets in python, but I guess it is somehow related to MATLAB code.
I am using the following code to decompose my 2D input vec[:,:]
um = pywt.wavedecn(vec[:,:],wavelet,pywt.MODES.sym,axes=(0,1))
but the output 'um' has been classified into 3 groups: 'ad','da','dd'. Anyone has an idea of what does they mean?
Thanks a lot
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