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Descriptions of original and augmented databases.
| Kinds of Image | Original Database | Augmented Database | ||||
|---|---|---|---|---|---|---|
| DB1 | DB2 | Combined DB | Augmented DB1 | Augmented DB2 | Combined Augmented DB | |
| Open eye images | 2062 | 4891 | 6953 | 103,100 | 244,550 | 347,650 |
| Closed eye images | 4763 | 485 | 5248 | 238,150 | 24,250 | 262,400 |
| Total | 6825 | 5376 | 12,201 | 341,250 | 268,800 | 610,050 |
