Table 6.

comparison between ultrasound monitored movement and movement tracked by camera. All numbers are in mm. LR: left and right direction, AP: Anterior and posterior direction, SI: superior and Inferior direction.

	US Tracking Results			Camera tracked (ground truth)			Difference
Run ID	LR	AP	SI	LR	AP	SI	LR	AP	SI
1	2.30	1.50	9.20	2.37	1.31	8.87	0.07	−0.19	−0.33
2	2.10	1.30	9.20	2.34	1.25	8.79	0.24	−0.05	−0.41
3	2.20	1.50	9.20	2.33	1.36	8.85	0.13	−0.14	−0.35
4	2.30	1.40	9.10	2.31	1.33	8.86	0.01	−0.07	−0.24
5	2.20	1.30	9.10	2.34	1.27	8.85	0.14	−0.03	−0.25
6	2.10	1.20	9.10	2.35	1.27	8.83	0.25	0.07	−0.27
7	2.20	1.20	9.00	2.35	1.24	8.84	0.15	0.04	−0.16
8	2.20	1.20	9.10	2.37	1.26	8.90	0.17	0.06	−0.20
9	2.20	1.20	9.00	2.35	1.28	8.87	0.15	0.08	−0.13
10	2.30	1.40	9.00	2.34	1.24	8.86	0.04	−0.16	−0.14
mean	2.21	1.32	9.10	2.35	1.28	8.85	0.14	−0.04	−0.25
SD	0.07	0.12	0.08	0.02	0.04	0.03	0.08	0.10	0.09