rwt (version 1.0.0)

mrdwt: Redundant Discrete Wavelet Transform

Description

Computes the redundant discrete wavelet transform y for input signal x using the scaling filter h. Redundant means here that the sub-sampling after each stage is omitted.

Usage

mrdwt(x, h, L)

Arguments

x

Finite 1D or 2D signal (implicitly periodized)

h

Scaling filter to be applied

L

Number of levels in wavelet decomposition. In the case of a 1D signal, length(x) must be divisible by $2^L$; in the case of a 2D signal, the row and the column dimension must be divisible by $2^L$. If no argument is specified, a full DWT is returned for maximal possible L.

Value

Returns a list with components:

yl

Lowpass component

yh

Highpass components

L

Number of levels in wavelet decomposition

Examples

sig <- makesig(SIGNAL.LEOPOLD, 8)
h <- daubcqf(4)
L <- 1
ret.mrdwt <- mrdwt(sig$x, h$h.0, L)