From: Tendon-motion tracking in an ultrasound image sequence using optical-flow-based block matching
Case | Average absolute error Ea (pixels) | |||||||
---|---|---|---|---|---|---|---|---|
Elbow (1 pixel = 0.075 mm) | Finger (1 pixel = 0.0265 mm) | |||||||
Optical flow | MKBM | Adaptive MKBM | OFTB-MKBM | Optical flow | MKBM | Adaptive MKBM | OFTB-MKBM | |
1 | 12.69 | 32.57 | 3.56 | 1.66 | 18.51 | 21.21 | 2.07 | 1.71 |
2 | 6.26 | 19.42 | 5.06 | 1.74 | 4.27 | 29.86 | 1.90 | 1.84 |
3 | 8.62 | 30.41 | 2.22 | 1.02 | 3.77 | 18.46 | 3.58 | 2.48 |
4 | 2.22 | 7.56 | 1.14 | 0.72 | 18.23 | 31.85 | 4.57 | 3.37 |
5 | 6.86 | 20.42 | 3.45 | 3.22 | 42.23 | 28.09 | 5.79 | 4.86 |
6 | 7.95 | 21.39 | 6.27 | 2.36 | 6.25 | 17.99 | 8.27 | 6.11 |
7 | 9.35 | 5.07 | 5.62 | 2.93 | 9.59 | 17.15 | 1.74 | 1.65 |
8 | 10.97 | 27.71 | 4.37 | 2.12 | 9.95 | 12.96 | 5.18 | 3.94 |