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Rwave (version 1.2)

rkernel: Kernel for Reconstruction from Wavelet Ridges

Description

Computes the cost from the sample of points on the estimated ridge and the matrix used in the reconstruction of the original signal, in the case of real constraints. Modification of the function kernel.

Usage

rkernel(node, phinode, nvoice, x.inc=1, x.min=node[1],
x.max=node[length(node)], w0=2 * pi, plot=FALSE)

Arguments

node
values of the variable b for the nodes of the ridge.
phinode
values of the scale variable a for the nodes of the ridge.
nvoice
number of scales within 1 octave.
x.inc
step unit for the computation of the kernel.
x.min
minimal value of x for the computation of $Q_2$.
x.max
maximal value of x for the computation of $Q_2$.
w0
central frequency of the wavelet.
plot
if set to TRUE, displays the modulus of the matrix of $Q_2$.

Value

  • matrix of the $Q_2$ kernel

Details

Uses Romberg's method for computing the kernel.

References

See discussions in the text of "Time-Frequency Analysis".

See Also

kernel, fastkernel, gkernel, zerokernel.