<< INWT_PO Tools for Fast Matrix Multiplication in Wavelet Basis Mat2SparseNSForm >>

Wavelab Toolbox >> Wavelab Toolbox > Tools for Fast Matrix Multiplication in Wavelet Basis > ISFT_PO

ISFT_PO

Convert Standard Form to Matrix Form (Periodized,Orthogonal)

Calling Sequence

M = ISFT_PO(S,L,qmf)

Parameters

Inputs:

S :

Matrix operating in wavelet basis

L :

Coarsest Resolution Level of WT

qmf :

quadrature mirror Filter of Wavelet Transform

Outputs:

M :

The matrix S expressed as a matrix operating in standard basis.

Description

if x is a vector and M is a matrix, then one can calculate Mx in two ways: (a) Use natural basis: M*x (b) Use wavelet Basis: IWT[S * FWT[x]] where FWT and IWT are wavelet transforms and S is the standard form of the matrix.

See also

Authors

<< INWT_PO Tools for Fast Matrix Multiplication in Wavelet Basis Mat2SparseNSForm >>