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Wavelab Toolbox >> Wavelab Toolbox > Bi-Orthogonal Wavelet Transform tools > MakeBSFilter

MakeBSFilter

Generate Biorthonormal QMF Filter Pairs

Calling Sequence

[qmf,dqmf] = MakeBSFilter(Type,Par)

Parameters

Inputs:

Type :

string, one of: 'Triangle', 'Interpolating', 'Deslauriers' (the two are same), 'Average-Interpolating', 'CDF' (spline biorthogonal filters in Daubechies's book), 'Villasenor' (Villasenor's 5 best biorthogonal filters)

Par :

integer list, e.g. if Type ='Deslauriers', Par=3 specifies Deslauriers-Dubuc filter, polynomial degree 3

Outputs:

qmf :

quadrature mirror filter (odd length, symmetric)

dqmf :

dual quadrature mirror filter (odd length, symmetric)

See also

Bibliography

I. Daubechies, "Ten Lectures on Wavelets."

G. Deslauriers and S. Dubuc, "Symmetric Iterative Interpolating Processes."

D. Donoho, "Smooth Wavelet Decompositions with Blocky Coefficient Kernels."

J. Villasenor, B. Belzer and J. Liao, "Wavelet Filter Evaluation for

Image Compression."

Authors

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