Dear Keith,
I'm afraid that we don't have a tool that lets you do this in a straightforward manner. If you are reasonably familiar with C++ programming the tools/classes that fnirt are built upon lets you sample the displacement fields in a continuous space (since they are represented as splines it is technically not even interpolation) which is what you need. But, it will involve getting your hand dirty with some C++.
Jesper
On 17 Aug 2013, at 19:59, Keith Jamison <[log in to unmask]>
wrote:
> I have a number of surfaces from freesurfer and I want to warp them using a transform from FNIRT. There was a lot of manual editing of the surfaces, so I am hoping to not have to regenerate them from the warped surfaces. All of my attempts have run into problems working between coordinate systems.
>
> Is there a straightforward way to apply the FNIRT warp field to sets of X,Y,Z coordinates?
>
> Thanks,
> Keith
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