Table 4. FOREVERP width measurements.
Width measurements in pixels listed as mean (μ) + standard deviation (σ) for the following vessel segments: normal vessel segment, vessels with central reflex, vessels with low contrast/uneven illumination and an average of all vessel profiles measured by human observer 1, human observer 2, ground truth and QUARTZ. Also, the differences μ (σ) between ground truth and QUARTZ are listed for all vessel profiles addressed.
| Vessel segment | Human observer 1 | Human observer 2 | Ground Truth (GT) | QUARTZ | Difference GT vs. QUARTZ | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| μ | σ | μ | σ | μ | σ | μ | σ | μ | σ | |
| Normal vessel segments | 16.33 | 4.24 | 15.87 | 5.12 | 16.10 | 4.50 | 16.47 | 4.34 | -0.37 | 1.91 |
| Vessels with central reflex | 16.75 | 5.70 | 18.14 | 6.83 | 17.45 | 6.18 | 18.29 | 6.06 | -0.85 | 1.44 |
| Vessels with low contrast/uneven illumination | 16.01 | 3.65 | 14.62 | 2.79 | 15.32 | 3.10 | 16.72 | 2.40 | -1.40 | 2.23 |
| All vessel profiles | 16.34 | 4.52 | 16.08 | 5.26 | 16.21 | 4.73 | 17.01 | 4.49 | -0.80 | 1.96 |