Table I.

Registration errors of the four methods on the four synthesized image datasets. (unit: pixel)

Data	Methods	Mean	Std	Max	Min (α)
data_1	Method-DS	26.9	1.50	27.7	24.2 (0.12)
	Method-DB	4.11	2.23	7.33	0.62 (0.32)
	Method-AS	27.1	0.41	27.6	25.1 (0.04)
	Method-AB	2.01	2.12	7.00	0.56 (0.37)
data_2	Method-DS	29.6	0.83	31.4	25.3 (0.07)
	Method-DB	14.4	4.98	25.1	1.86 (0.83)
	Method-AS	30.1	0.77	31.1	27.7 (0.06)
	Method-AB	10.2	4.23	20.4	0.90 (0.78)
data_3	Method-DS	1.36	0.29	2.75	1.05 (0.18)
	Method-DB	1.15	0.28	2.57	0.76 (0.21)
	Method-AS	1.22	0.15	1.40	0.99 (0.08)
	Method-AB	0.93	0.10	1.15	0.52 (0.20)
data_4	Method-DS	19.4	0.28	19.8	18.4 (0.68)
	Method-DB	1.23	0.32	2.44	0.89 (0.22)
	Method-AS	19.1	0.06	19.2	19.0 (0.72)
	Method-AB	1.17	0.30	1.89	0.60 (0.20)