Hi Johnson - The aparc+aseg.mgz is in the same space as the T1 used as input to freesurfer.
a.y
On Mon, 26 Mar 2012, Johnson wrote:
Hi FS expert I need to know the transformation matrix itself since I will do the transformation in matlab. I successfully transformed white matter fibers coordinates to T1 using AIR 5.0 from LONI lab. They provide a transformation matrix. Now I want to transform the coordinates from T1 to Freesurfer space, so my question is: what is the transformation matrix that relates the T1 which FS have used for parcellation and segmentation with the aparc+aseg.mgz file? I searched the logs but couldn't find such matrix. I don't want to do a registration step since it will be less accurate than the one that was generated during the segmentation process. Also is it just one transformation or a combination of transformations?
thanks