Table 1.
Root Mean Square errors measured at different skeleton nodes as a function of gait direction, camera distance and video resolution.
| # | Gait type | Straight gait | Diagonal gait | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Distance (m) | 1.8 | 1.8 | 1.0 | 1.0 | 1.8 | 1.8 | 1.0 | 1.0 | |
| Resolution | LR | HR | LR | HR | LR | HR | LR | HR | |
| 1 | Sternum | 25.2 | 16.8 | 41.1 | 22.1 | 65.8 | 54.0 | 69.5 | 60.1 |
| 2 | Shoulder, left | 32.3 | 20.0 | 42.2 | 26.5 | 46.2 | 45.5 | 52.8 | 51.2 |
| 3 | Shoulder, right | 27.5 | 17.7 | 37.2 | 22.1 | 42.1 | 39.2 | 48.3 | 41.2 |
| 4 | Elbow, left | 28.2 | 18.3 | 49.8 | 24.6 | 69.9 | 61.6 | 69.1 | 58.3 |
| 5 | Elbow, right | 27.2 | 18.8 | 50.3 | 27.9 | 62.7 | 74.4 | 48.5 | 44.6 |
| 6 | Wrist, left | 23.3 | 17.1 | 45.1 | 22.9 | 51.6 | 51.8 | 79.1 | 54.0 |
| 7 | Wrist, right | 25.4 | 16.1 | 48.6 | 22.3 | 65.1 | 66.9 | 56.1 | 48.2 |
| 8 | Hip, left | 33.0 | 21.9 | 48.5 | 29.0 | 79.9 | 81.1 | 67.5 | 75.7 |
| 9 | Hip, right | 34.6 | 23.4 | 50.1 | 41.4 | 79.5 | 82.5 | 71.6 | 73.5 |
| 10 | Knee, left | 30.9 | 23.4 | 60.0 | 29.2 | 53.7 | 53.0 | 58.7 | 55.4 |
| 11 | Knee, right | 33.9 | 24.8 | 39.6 | 19.9 | 58.4 | 57.6 | 63.7 | 48.3 |
| 12 | Ankle, left | 39.5 | 26.1 | 62.2 | 24.0 | 69.1 | 68.7 | 87.4 | 103.3 |
| 13 | Ankle, right | 35.8 | 26.2 | 34.5 | 21.4 | 63.5 | 62.7 | 64.9 | 61.3 |
| - | Mean | 30.5 | 20.8 | 46.9 | 25.6 | 62.1 | 61.5 | 64.4 | 59.6 |
| - | SD | 4.6 | 3.5 | 7.9 | 5.4 | 11.1 | 12.6 | 11.1 | 16.0 |
Values in mm.