crcrec {Rwave}

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.