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Rwave (version 1.2)

crcrec: Crazy Climbers Reconstruction by Penalization

Description

Reconstructs a real valued signal from the output of crc (wavelet case) by minimizing an appropriate quadratic form.

Usage

crcrec(siginput, inputwt, beemap, noct, nvoice, compr, minnbnodes=2,
w0=2 * pi, bstep=5, ptile=0.01, epsilon=0, fast=FALSE, para=5, real=FALSE,
plot=2)

Arguments

siginput
original signal.
inputwt
wavelet transform.
beemap
occupation measure, output of crc.
noct
number of octaves.
nvoice
number of voices per octave.
compr
compression rate for sampling the ridges.
minnbnodes
minimal number of points per ridge.
w0
center frequency of the wavelet.
bstep
size (in the time direction) of the steps for chaining.
ptile
relative threshold of occupation measure.
epsilon
constant in front of the smoothness term in penalty function.
fast
if set to TRUE, uses trapezoidal rule to evaluate $Q_2$.
para
scale parameter for extrapolating the ridges.
real
if set to TRUE, uses only real constraints.
plot
1: displays signal,components,and reconstruction one after another. 2: displays signal, components and reconstruction.

Value

  • Returns a structure containing the following elements:
  • recreconstructed signal.
  • orderedimage of the ridges (with different colors).
  • comp2D array containing the signals reconstructed from ridges.

Details

When ptile is high, boundary effects may appeare. para controls extrapolation of the ridge.

See Also

crc, cfamily, scrcrec.