Hi Freesurfers, I have a question about the direction of the transformation written out to the register.dat file by bbregister.
I have looked at the fscoordinates powerpoint presentation, which I think is telling me that this matrix actually maps from the orig.mgz RAS coordinates to the functional RAS coordinates. That agrees with the results I get when I try to use the matrix outside of Freesurfer. However, this is a little surprising, because I think of the bbregister process as aligning the functional (moving) with the anatomy (target) so I would have expected the transform matrix to represent that mapping. Can you please confirm whether my understanding of the fscoordinates presentation is correct, or help me out if I am off base? Thanks! Michael
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