Global registration (a) and local registration (b) for a same subject. In each of (a) and (b): Shown in the first row are (1) the atlas to which the MT model is registered, (2) the initial MT model, and (3) the registered MT model; and shown in the second row are (4) the MT model to which the FS model is registered (i.e., the same as (3)), (5) the initial FS model, and (6) the registered FS model. RMSDs (in mm) are shown. The underlying parameterization is shown as a colorful mesh on each surface.