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Rwave (version 1.2)

gkernel: Kernel for Reconstruction from Gabor 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.

Usage

gkernel(node, phinode, freqstep, scale, x.inc=1, x.min=node[1],
x.max=node[length(node)], 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.
freqstep
sampling rate for the frequency axis.
scale
size of the window.
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 $Q_2$.
plot
if set to TRUE, displays the modulus of the matrix of $Q_2$.

Value

  • matrix of the $Q_2$ kernel

References

See discussions in the text of ``Time-Frequency Analysis''.

See Also

fastgkernel, kernel, rkernel, fastkernel, zerokernel.