what is the scaling function on wavelet in the matlab?

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mohammad ahmadzade
mohammad ahmadzade le 12 Juin 2017
Réponse apportée : Wayne King le 19 Juin 2017
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Wayne King
Wayne King le 19 Juin 2017
Hi Mohammad, I'm not sure this question is complete since you just wrote "1" in the body. The scaling function provides the low frequency (DC components) or very long scale representation of the signal (or image). Recall that a wavelet by definition has zero mean which means the Fourier transform at \omega = 0 (or whatever Fourier variable you like to use) is equal to zero. If you want to recover a DC shift in a signal or image, then you need the scaling function.

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