yes, mri_surf2surf will do it. In some sense there is really only one surface for each subject/hemisphere, it just lives at different points in space (which, pial, inflated, sphere.reg....). You can always use the index of a vertex to go from one to the other. If you give us more details about what you are trying to do, we can help, but if you have a scalar field on one of the surfaces (pial or whatever), you can use mri_surf2surf using the sphere.reg to map that to any other subject (including fsaverage which is in MNI coords)
cheers Bruce
On Wed, 25 Jan 2017, Dorian P. wrote:
Thank you Bruce. I am not that familiar with this process. How can I look the transformation of a specific vertex index? Is this done still with mri_surf2surf?
Dorian
On Wed, Jan 25, 2017 at 4:50 PM, Bruce Fischl fischl@nmr.mgh.harvard.edu wrote: Hi Dorian
the transform should be by looking up the spherical coordinates on the sphere.reg for that vertex index and using that to find the corresponding fsaverage sphere.reg vertex. cheers Bruce On Wed, 25 Jan 2017, Dorian P. wrote: > Hi, I am trying to find the corresponding coordinate of a vertex in lh.pial > in fsaverage space. I manage to transform lh.pial in fsaverage space but > this does not give corresponding points or a way to do point by point > transformation. > I want to do the same with some vertices from lh.pial-outer-smoother. Trying > to transform this with mri_surf2surf gives an error because obviously there > is no registration of that mesh. Any idea if this can be achieved at all? > > Last question: am I correct assuming that the surface to surface > registration (sphere.reg) does a better job at matching gyri and sulci on > fsaverage than the simple conversion in MNI305 (aka fsaverage): > MNI305RAS = TalXFM*Norig*inv(Torig)*[tkrR tkrA tkrS 1]' > > Thank you. > Dorian > >
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.