Hi ,
Thanks for the answer.
> Given these objectives, it should be possible to do what you want.
>
> Let's call your starting template fiducial 'TF.coord' Your deformed template
> fiducial surface, DTF.coord, also has the same number of nodes, I gather -
> allowing you to create and display a node-based deformation vector.
>
> When you register DTF.coord to TF.coord, you will get a new surface that will
> be named 'Resampled_DTF.coord' if you select 'Resampled_' as the prefix on
> the Deformation tab when you run spherical deformation. If you create a
> deformation field between 'Resampled_DTF.coord' and 'TF.coord', it should
> reflect the node correspondences resulting from the registration process.
>
I'm a little confused about the "resampled" surface. So from the above, you
mean I should do spherical registration between "DTF.sphere.coord" to
"TF.sphere.coord", then I can get a fiducial surface which is
resampled_DTF.coord. This surface, I think you mentioned previously, it is just
a resampling surface having the same number of vertices with the TF.coord. I
checked this surface, it has exactly the same pattern with the DTF.coord. Do
you mean the resampled_DTF.coord surface reflect the registration? Then the
result is really not satisfying as when I superimpose the resampled_DTF.coord
with DTF.coord, there is really little difference which didn't change the
pattern at all.
Do you think I do it right in the way above?
> Bear in mind that the deformation is unlikely to perform well unless the
> landmarks you choose are close to and effectively surround whatever local
> deformations were used to generate DTF.coord. Thus, if you created, say, a
> restricted deformation of one region (e.g., smoothing of the frontal pole),
> you would not obtain good registration using only the standard 'core 6'
> landmarks.
>
My deformation filed is base on the global change, so the DTF.coord is not
restrictly deformed in one region. But from the resampled_DTF.coord, I really
didn't see much change. I think there should be some step wrong for me. Hope
for your suggestion.
> Let me know if this is unclear.
> >
> David
Thanks,
Jidan
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