rbiowavf

Purpose

Reverse biorthogonal spline wavelet filters

Syntax

• [RF,DF]= rbiowavf(W)
  

Description

[RF,DF] = rbiowavf(W) returns two scaling filters associated with the biorthogonal wavelet specified by the string W.

W = 'rbioNr.Nd' where possible values for Nr and Nd are

Nr = 1	Nd = 1 , 3 or 5
Nr = 2	Nd = 2 , 4 , 6 or 8
Nr = 3	Nd = 1 , 3 , 5 , 7 or 9
Nr = 4	Nd = 4
Nr = 5	Nd = 5
Nr = 6	Nd = 8

The output arguments are filters.

• RF is the reconstruction filter.
• DF is the decomposition filter.

Examples

• % Set reverse biorthogonal spline wavelet name.
        wname = 'rbio2.2';
      
  % Compute the two corresponding scaling filters,
  % rf is the reconstruction scaling filter and
  % df is the decomposition scaling filter.
  [rf,df] = rbiowavf(wname)
  
  rf =
     -0.1250    0.2500    0.7500    0.2500   -0.1250
  
  df =
      0.2500    0.5000    0.2500
  

See Also

biorfilt, waveinfo

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