crcrec: Crazy Climbers Reconstruction by Penalization

In Rwave: Time-Frequency Analysis of 1-D Signals

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.

Rwave documentation built on Oct. 22, 2022, 1:05 a.m.