Table 3.

Area measurement results from five phantom videos.

Phantom	Curvature	Real Size	Measured Size	Absolute error	Relative error
		(cm2)	(cm2)	(cm2)	%
1	Low	10.8	11.29	0.49	4.54
2	Low	16.2	15.58	0.62	3.82
3	Low	21.6	20.70	0.90	4.16
4	High	10.8	11.32	0.52	4.81
5	High	16.2	15.59	0.61	3.77