Test 50 cm

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50 cm

Measure a known distance between 2 markers

The results for the measurement of the distance between the top two bar markers are presented in Table 2. Measured distances between the two fully visible markers spaced was 50 cm.

	Measured	Rank	RMS	Rank	Max	Rank	Total	Rank	Sub-Total
	[cm]	Score	Error cm	Score	Error cm	Score	Error	Score	Score
Ariel	49.882	2	0.246	1	0.961	1	1.207	1	4
Motion	49.796	1	0.059	5	0.183	4	0.242	5	10
Peak	49.942	4	0.091	2	0.259	2	0.350	2	8
Qualisys	49.906	3	0.080	3	0.198	3	0.278	3	9
Vicon	49.952	5	0.062	4	0.183	4	0.245	4	13

Table 2. 50-cm Test

APAS produced relatively good results on the 50 cm test. The RMS indicated 2.46 mm of error which is less then .5 of a percent. The accuracy could increase with an additional camera. APAS used only 5 cameras while all the others used 6 cameras.

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