Table 2.

Registration Matching Error (Landmarks around the eye region as control points), pixels.

Methods	Coarse	Coarse—Demons	Coarse—Spline
Sub. L1	7.6	5.2	2.1
Sub. L2	2.4	2.1	2.6
Sub. L3	3.4	4.4	4.2
Sub. L4	4.7	3.5	7.3
Sub. L5	5.4	6.4	4.4
Sub. L6	3.5	1.8	3.1
Sub. L7	8.5	2.3	6.0
Sub. L8	3.7	2.2	4.9
Sub. L9	6.6	1.6	6.3
Sub. L10	5.6	2.1	4.8
Mean	5.1	3.2	4.6
SD	1.9	1.6	1.7