[Insight-users] itkLinearInterpolateImageFunction

[Anja Ende]

Hi Luis,

Thanks for the reply. Things are clearer now. When I said "non-rigid",
I meant mostly registration based on free form deformations (B-splines
for example). I was trying to understand how the moving image will be
transformed before it is compared with the fixed image in the
calculation for similarity metric.

So, if I understand correctly, the registration process will move the
control points for the b-spline to give a new set of sample points. I
am a little bit confused about what happens after? Do we now
interpolate back from this new sample points to the sample points in
our original image and compute the similarity matrix?

I guess my doubts are with the registration process itself.

Thanks,

Anja