Hi Ping
the displacement fields are stored in m3z format in the file
talairach.m3z. They are a vector field over the atlas that maps points in
the atlas to points in the original (not linearly aligned) space.
cheers
Bruce
On Wed, 28 Aug 2019, ping
cao wrote:
External Email - Use Caution
Dear expert，
I saw a paper mentioned this ：
By using the deformation field from
nonlinear registration, we can build the
correspondence between voxels in the
template and each linearly-aligned image.
For instance, for each voxel (x, y, z) in
the template image, we can find its
corresponding voxel (x + dx, y + dy, z +
dz) in each linearly-aligned image, where
(dx, dy, dz) is the displacement from the
template image to the linearly-aligned
image defined by the deformation field.
So, I want to get the deformation field from the template to the
linearly registered image(flirt_T1).
Can Freesurfer do this? Which file is a linearly registered image that
does not contain an affine transformation? How can I get this
deformation field?
Your help is greatly appreciated.
Best,
ping
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