we expect the input images to be (1) N-ary
(2) in the same physical space as the images you want to
register and (3 ) to have the same landmark points defined within them ... land‐
marks will be defined from the center of mass of the labels in the input images .
You can use ITK-snap to generate the label images. The optional landmarks weights
are read from a text file where each row is either: "label,labelWeight" or "label‐
Weight" or If the latter format is used, the label weights are assumed to be
arranged in ascending order by label.ANTSUseLandmarkImagesToGetBSplineDisplacemeAANTSUSELANDMARKIMAGESTOGETBSPLINEDISPLACEMENTFIELD(1)