Re: [Freesurfer] Voxel-to-voxel transformation & overlapping voxels

2014-12-05 Thread Jackie Lam
Thanks! Just to make sure, do voxel coordinates refer to the centre of the voxel? Like, would [1.5 2.5 3.5] correspond to one corner of [1 2 3]? Jack ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/

Re: [Freesurfer] Voxel-to-voxel transformation & overlapping voxels

2014-12-05 Thread Douglas N Greve
#1 looks correct (good job!) #2 4.3 means that the center of the anatomical voxel falls 30% of the way between voxels 4 and 5 in the function image (closer to voxel 4). To find out which func voxels a given anatomical voxel falls into, you can compute the func CRS for each corner of the anat v

[Freesurfer] Voxel-to-voxel transformation & overlapping voxels

2014-12-05 Thread Jackie Lam
Hello all, I am trying to figure the voxel-to-voxel correspondence between an anatomical image (1mm^3 voxels) and a functional image (2x2x2mm voxels). I registered the functional to the anatomical with bbregister and used the registration matrix to update the geometry info in the header of the