you can just compute the jacobian of the ?h.sphere.reg for deformation. I'm
not sure I understand how you would use an L2 metric. There are tools in
AFNI/SUMA for converting a freesurfer surface to a standard mesh that you
could use
cheers
Bruce
On Wed, 29 Oct 2014, Alexandre Routier wrote:
Hello Bruce,
I would like to build an atlas of subcortical structures and pial surface on
my population of study. But given the anatomical complexity of the pial
surface (and the number of points), I would like to use point-to-point
correspondence so as to have a L^2 metric (I use another metric for
subcortical structures).
I don't know if I am clear enough but since I estimate the template and the
variability between the template and the subjects, I would like to detect
information such as atrophy thanks to the deformation parameters.
Is there any solution?
Alexandre
2014-10-29 13:49 GMT+01:00 Bruce Fischl <fis...@nmr.mgh.harvard.edu>:
Hi Alexandre
can you tell us what you want to do with the point-to-point
correspondence? We don't usually map surfaces into a common
space since
we want to have uniform resolution/sampling in the individual
coords.
cheers
Bruce
On Wed, 29 Oct 2014, Alexandre Routier wrote:
> Dear all,
>
> I would like to work with the pial surfaces of my database and
more
> particularly with a point-to-point correspondance between each
subject. But
> I didn't find how to do that, only for longitudinal analysis
of a single
> subject which I am not interested.
>
> Thanks in advance for you help,
> Alexandre
>
>
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