Table 1.
Performance statistics for OCR results over 161 randomly selected images
| High-recall mode | High-precision mode | |
|---|---|---|
| Precision | 27.85% | 87.68% |
| Recall | 64.79% | 38.45% |
| F-rate | 0.390 | 0.535 |
Manual labeling determined that the images contain 2445 text strings, of which 70.84% are not found in the associated captions.