Table 2.

MSE statistics of the estimated deformation field.

Ground truth	MSE (average)			MSE (standard deviation)
	SAD	SSD	Ours	SAD	SSD	Ours
2.0	0.652	0.547	0.521	0.057	0.036	0.034
3.2	0.765	0.576	0.563	0.062	0.051	0.046
4.4	0.932	0.789	0.766	0.065	0.044	0.026
5.3	1.391	0.915	0.887	0.078	0.037	0.031