.BG
.FN gkernel
.TL
Kernel for Reconstruction from Gabor Ridges
.DN
Computes the cost from the sample of points on the estimated ridge
and the matrix used in the reconstruction of the original signal.
.CS
gkernel(node, phinode, freqstep, scale, x.inc=1, x.min=node[1], x.max=node[length(node)], plot=F)
.RA
.AG node
values of the variable b for the nodes of the ridge.
.AG phinode
values of the scale variable a for the nodes of the ridge.
.AG freqstep
sampling rate for the frequency axis.
.AG scale
size of the window.
.OA
.AG x.inc
step unit for the computation of the kernel.
.AG x.min
minimal value of x for the computation of Q_2.
.AG x.max
maximal value of x for the computation of Q_2.
.AG plot
if set to TRUE, displays the modulus of the matrix of Q_2.
.RT
matrix of the Q_2 kernel
.SE
.DT
.SH REFERENCES
See discussions in the text of "Time-Frequency Analysis".
.SA
"fastgkernel", "kernel", "rkernel", "fastkernel", "zrokernel".
.EX
