The RSPLs are not related to radial basis functions. The technique is
essentially the fitting of the regular grid to the data.
Thanks for the explanation. I think I was a bit confused, since in the
past you used several times the term "thin plate splines" in conjunction
with RSPL. However, to the best of my knowledge, true "thin plate
splines" are radial basis functions r^2*ln(r). Thus may I conclude, the
RSPLs are not really TPS, but linear splines operating directly on the
regular CLUT grid, but with otherwise similar characteristics as TPS,
trying to minimize overall bending energy (with a trade-off between
error and smoothness). I.e. something like a discrete variant of TPS?
