Fig 1. The steps of parameterization and correspondence of hippocampus.

A, Hippocampus shape characters; H and T represent the head and tail landmarks, respectively; the cyan shows isolatitude circles; the pink shows the extracted dateline.

B, The parameterized mesh; the blue-red hue scale indicates the changes from the head to the tail of hippocampus.

C, The alignment in terms of the isolatitude circle areas along latitude direction. The 2 curves on the left show the area distribution of isolatitude circles from head to tail; the red is the template and the green is 1 subject before transformation. The results after transformation are shown at the right.