Table 2.
Preliminary assessment of cost function accuracy (AvDistErr) and sensitivity (Spearman’s Rank Correlation) to changes in pose using randomly distributed transformations about the truth for all simulated motion cases. Note that large correlation and small AvDistErr are desired.
| MSD | NCC | PI | NMI | MI | EDI | ||
|---|---|---|---|---|---|---|---|
| Scheme A: Narrow | Spearman’s Rank Correlation | 0.45±0.16 | 0.54±0.14 | 0.36±0.19 | 0.40±0.17 | 0.37±0.14 | −0.14±0.17 |
| AvDistErr (mm) | 5.09±2.29 | 3.83±2.01 | 4.25±2.80 | 5.93±1.63 | 5.7±1.21 | 8.87±1.96 | |
| Scheme B: Narrow | Spearman’s Rank Correlation | 0.44±0.16 | 0.47±0.14 | 0.42±0.12 | 0.42±0.16 | 0.37±0.21 | −0.16±0.16 |
| AvDistErr (mm) | 5.04±1.12 | 5.28±2.71 | 4.72±2.66 | 4.76±1.68 | 5.28±1.73 | 7.94±1.63 | |
| Scheme A: Broad | Spearman’s Rank Correlation | 0.68±0.05 | 0.68±0.04 | 0.65±0.04 | 0.72±0.04 | 0.71±0.05 | −0.13±0.12 |
| AvDistErr (mm) | 8.50±9.67 | 8.55±9.67 | 7.01±9.15 | 6.86±9.15 | 1.45±3.41 | 34.56±6.72 | |
| Scheme B: Broad | Spearman’s Rank Correlation | 0.66±0.04 | 0.70±0.05 | 0.66±0.05 | 0.73±0.05 | 0.71±0.06 | −0.15±0.16 |
| AvDistErr (mm) | 4.11±7.80 | 4.81±7.80 | 7.19±9.11 | 5.74±8.83 | 0.75±2.62 | 24.28±18.73 |