Commit 4b2fae25 authored by Paul McCarthy's avatar Paul McCarthy 🚵
Browse files

DOC: Note on fnirt deformation fields

parent 56bf8834
......@@ -82,6 +82,12 @@ the reference image, and may contain:
the source image coordinates which correspond to those reference image
coordinates.
.. note:: FNIRT deformation field files give no indication as to whether they
contain relative displacements or absolute coordinates, so heuristics
must be used to infer what is stored in a a particular file. The
:func:`.nonlinear.detectDeformationType` function can be used to
determine whether a file contains relative displacements or absolute
coordinates.
If an initial linear registration was used as the starting point for FNIRT,
this is encoded into the displacements/coordinates themselves, so they can be
......
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