Table 3.
Mean errors between the reference trajectory (detected by gold standard system) and the hand posture reconstruction generated by the socket ball and IMU reconstruction on vertical middle planes according to different horizontal flexions and abductions (five people, three trials).
 |
10° | 20° | 30° | 40° | 50° | 60° | 70° | 80° |
|---|---|---|---|---|---|---|---|---|
| 20° | 0.8 | 1.2 | 1.4 | 2.2 | 1.8 | 1.6 | 1.2 | 0.7 |
| 40° | 1.6 | 2.2 | 2.5 | 2.3 | 2.4 | 2.1 | 1.5 | 1.2 |
| 60° | 2.6 | 2.6 | 3.0 | 3.2 | 3.1 | 2.7 | 2.4 | 2.1 |
| 80° | 4.5 | 4.9 | 5.8 | 6.1 | 5.6 | 5.5 | 4.7 | 4.3 |
| 100° | 8.5 | 9.7 | 9.8 | 10.9 | 11.2 | 10.5 | 9.3 | 7.5 |
| 120° | 19.4 | 20.6 | 21.3 | 22.44 | 22.7 | 22.0 | 19.3 | 18.2 |