afni.nimh.nih.gov

Another variant of basically the same idea is to remove the translation from the affine transformation here, B2A_affine, by zeroing out that last column of the affine matrix. Apply that transformation separately with 3drefit instead to move the origin. With nonlinear warps that already include a large translation, you could subtract the mean x,y,z deformations from each of the sub-bricks of the warp dataset. Similarly apply the translation via a 3drefit.