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18.13 2D Wavelet Transforms

Wavelet transforms can be used on a 2D signal, breaking it down into its approximation coefficients, horizontal details coefficients, vertical details coefficients, and diagonal details coefficients. Three types of wavelets are supported: Haar, Daubechies (N=2, 3, 4, 5, 7, 8, 9), and biorthogonal (Nr.Nd=1.1, 1.3, 1.5, 2.2, 2.4,2.6, 3.1, 3.3, 3.5, 3.7).

 

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