option "ref" - "List of points in reference" string yes
option "input" i "Lists of points in targets" string multiple yes
-option "vf" - "Input deformation fields" string multiple yes
+option "vf" - "Input deformation fields" string multiple no
+option "coeff" - "Input coefficient images" string multiple no
option "skip" - "Skip a phase of a 4D DVF" int no
section "Interpolation"