I want to make sure my understanding of the flirt 2D registration correct.
${FSLDIR}/etc/flirtsch
1) sch2D_3dof (same as -2D): x, y translation + in-plane roation
2) sch2D_5dof: sch2D_3dof + x, y scaling?
3) sch2D_6dof: sch2D_5dof + ?
4) Although the example on line suggests flirt -2D for a single slice,
it apparently worked with 3D volume images as well in my trial. The
obvious problem is that it only outputs ONE, instead of slice#,
transformation matrix, which made me worried about whether I am abusing
flirt -2D. However the resulting image did show improvement in alignment
and did suggest the code operated on individual slice. Yet, can somebody
know the details about flirt -2D verify its behavior in such situation?
Thanks
Junqian "Gordon" Xu
National Multiple Sclerosis Society Postdoctoral Fellow
Department of Neurology
Washington University in St. Louis
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