Biorthogonal spline wavelet filters.
Syntax
[RF,DF] = biorwavf(W)
Description
[RF,DF] = biorwavf(W) returns two scaling filters associated with biorthogonal wavelet specified by the string W.
W = 'biorNr.Nd' where possible values for Nr and Nd are:
Nr = 1
|
Nd = 1 , 3 or 5
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Nr = 2
|
Nd = 2 , 4 , 6 or 8
|
Nr = 3
|
Nd = 1 , 3 , 5 , 7 or 9
|
Nr = 4
|
Nd = 4
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Nr = 5
|
Nd = 5
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Nr = 6
|
Nd = 8
|
The output arguments are filters:
Examples
% Set spline biorthogonal wavelet name.
wname = 'bior2.2';
% Compute the two corresponding scaling filters,
% rf is the reconstruction scaling filter and
% df is the decomposition scaling filter.
[rf,rd] = biorwavf(wname)
rf =
0 0.2500 0.5000 0.2500 0 0
df =
-0.1250 0.2500 0.7500 0.2500 -0.1250 0
See Also
biorfilt, waveinfo
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