<< MakeCDJVFilter Orthogonal Wavelet Transform Tools MakeONFilter >>

Wavelab Toolbox >> Wavelab Toolbox > Orthogonal Wavelet Transform Tools > MakeOBFilter

MakeOBFilter

Makes Orthogonal Boundary conjugate mirror filters

Calling Sequence

[a,b,c] = MakeOBFilter(request,degrees)

Parameters

Inputs:

request:

string: 'HighPass', 'LowPass', 'Precondition', 'Postcondition'

degrees:

integer: 2 or 3 (number of vanishing moments)

Outputs:

a,b,c :

filter, left edge filter, right edge filter ('HighPass', 'LowPass')

a :

conditioning matrix ('Precondition', 'Postcondition')

Description

CDJV have developed an algorithm for wavelets on the interval which preserves the orthogonality, vanishing moments, smoothness, and compact support of Daubechies wavelets on the line.

The algorithm for wavelets on the interval of CDJV involves four objects not present in the usual periodized algorithm: right edge filters, left edge filters, and pre- and post- conditioning operators.

These objects are supplied by appropriate requests to MakeCDJVFilter.

See also

Bibliography

Cohen, Daubechies, Jawerth and Vial, 1992.

Mallat's book, section 7.5.3

Authors

<< MakeCDJVFilter Orthogonal Wavelet Transform Tools MakeONFilter >>