IWT3_PO: Inverse 3-d MRA Wavelet Transform (periodized, orthogonal)

In rwavelet: Wavelet Analysis

Description

If wc is the result of a forward 3-d wavelet transform, with wc <- FWT3_PO(x, L, qmf). then x <- IWT3_PO(wc, L, qmf) reconstructs x exactly qmf is a nice qmf, e.g. one made by MakeONFilter.

Usage

IWT3_PO(wc, L, qmf)

Arguments

wc	3-d wavelet transform (n by n by n array, n dyadic).
L	coarse level.
qmf	quadrature mirror filter.

Details

3-d counterpart of Donoho's IWT2_PO, original matlab code by Vicki Yang and Brani Vidakovic.

Value

x 3-d signal reconstructed from wc.

See Also

FWT3_PO, MakeONFilter.

Examples

qmf <- MakeONFilter('Daubechies', 10)
L <- 3
x <- array(rnorm(32^3), c(32, 32, 32))
wc <- FWT3_PO(x, L, qmf)
xr <- IWT3_PO(wc, L, qmf)

rwavelet documentation built on Jan. 13, 2021, 10:38 a.m.