_
>> Von: freesurfer-boun...@nmr.mgh.harvard.edu
>> [freesurfer-boun...@nmr.mgh.harvard.edu]" im Auftrag von
>> "Bruce Fischl [fis...@nmr.mgh.harvard.edu]
>> Gesendet: Montag, 12. Mai 2014 15:46
>> An: Freesurfer support list
>> Betr
2014 15:46
An: Freesurfer support list
Betreff: Re: [Freesurfer] distance comparisons across subjects in fsaverage
group sphere
Hi Christopher
the spherical mapping usually has on the order of 17-20% distortion in
distances, and the registration is probably significantly more. I'm not
enti
r-boun...@nmr.mgh.harvard.edu]" im Auftrag von "Bruce
Fischl [fis...@nmr.mgh.harvard.edu]
Gesendet: Montag, 12. Mai 2014 15:46
An: Freesurfer support list
Betreff: Re: [Freesurfer] distance comparisons across subjects in fsaverage
group sphere
Hi Christopher
the spherical mapping usually has
Hi Christopher
the spherical mapping usually has on the order of 17-20% distortion in
distances, and the registration is probably significantly more. I'm not
entirely sure what are trying to do, but you can measure the difference in
great circle length between the sphere and sphere.reg to get
Dear Freesurfers,
In Fischl et al. 1999 it is highlighted, that the topological structure of the
original surface is preserved in the spherical space and due to the nature of a
sphere, computations (distance, area) measures are easy to make.
My question now, concerns the comparability of distan
