Table 2.
Features of the Chákṣu IMAGE database.
| Particulars | Training set | Test set |
|---|---|---|
| Total number of images (1345) | 1009 | 336 |
| Fundus imaging devices used and number of images acquired per device: | ||
| Remidio (nonmydriatic type; image resolution: 2448 × 3264) | 810 | 264 |
| Bosch (nonmydriatic type; image resolution: 1920 × 1440) | 104 | 41 |
| Forus (nonmydriatic type; image resolution: 2048 × 1536) | 95 | 31 |
| Number of experts participated in manual annotations | 5 | 5 |
| OD/OC outlining provided by each expert | ✓ | ✓ |
| Single mean OD/OC ground truth generated out of 5 manual annotations | ✓ | ✓ |
| Single median OD/OC ground truth generated out of 5 manual annotations | ✓ | ✓ |
| Single majority OD/OC ground truth generated out of 5 manual annotations | ✓ | ✓ |
| Single STAPLE algorithm based OD/OC ground truth generated out of 5 manual annotations | ✓ | ✓ |
| Parameters computed from expert annotations: | ✓ | ✓ |
| OD, OC, and neuroretinal rim area | ✓ | ✓ |
| Vertical cup-to-disc ratio (VCDR) | ✓ | ✓ |
| Horizontal cup-to-disc ratio (HCDR) | ✓ | ✓ |
| Area cup-to-disc ratio (ACDR) | ✓ | ✓ |
| Glaucoma decision provided by each expert | ✓ | ✓ |
| Single glaucoma decision generated by a majority vote | ✓ | ✓ |