crcrec {Rwave}R Documentation

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.

Details

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

Value

Returns a structure containing the following elements:
rec reconstructed signal.
ordered image of the ridges (with different colors).
comp 2D array containing the signals reconstructed from ridges.

See Also

crc, cfamily, scrcrec.


[Package Rwave version 1.24-2 Index]