Table 2:

Comparison of ICON against the methods in [36], on cross-subject registration for OAI knee images.

Method	${\mathcal{L}}_{sim}$	Dice	Folds	Time [s]
Demons	MSE	63.47	19.0	114
SyN	CC	65.71	0	1330
NiftyReg	NMI	59.65	0	143
NiftyReg	LNCC	67.92	203	270
vSVF-opt	LNCC	67.35	0	79
Voxelmorph (w/o affine)	MSE	46.06	83	0.12
Voxelmorph	MSE	66.08	39.0	0.31
AVSM (7-Step Affine, 3-Step Deformable)	LNCC	68.40	14.3	0.83
ICON (2 step ½ res., 2 step full res., w/o affine)	MSE	68.29	118.4	1.06
ICON (2 step ½ res., 1 step full res., w/o affine)	MSE	66.16	169.4	0.57
ICON (2 step ½ res., w/o affine)	MSE	59.36	49.35	0.09