Table 3. Sensitivity to Match Window and Grid Search Bound.

The LFC method was applied to test case 8 using several different sets of input parameters.

Match Window Dimensions	S (voxels)	Grid Search Time	M*	Avg. (Std.) Error
9×9×5	7	5.64	17068	7.84 (9.97)
	12	18.62	16428	1.12 (1.23)
	17	44.51	15805	1.12 (1.16)
	22	89.36	15965	1.17 (1.30)
5×5×5	17	16.52	15162	2.63 (2.26)
9×9×3	17	24.91	15659	1.24 (1.20)
11×11×5	17	49.66	16431	1.14 (1.23)

M* denotes the number of acceptable point matches returned by the filter and the average error is given in millimeters. For all experiments in the table, K =32 and M = 30647.