Table 1 Data augmentation performance evaluation on Handwritten Medical Term Corpus.
SL. | Method | Model accuracy (%) | Data size | ||
|---|---|---|---|---|---|
Avg | Max | Min | |||
1. | No data expansion | 73.4 | 90.8 | 19.0 | 15,911 |
2. | Rotate | 83.8 | 95.6 | 3.33 | 1,591,100 |
3. | Shift | 91.3 | 93.9 | 87.8 | 1,591,100 |
4. | Stretch | 91.4 | 95.7 | 87.5 | 1,591,100 |
5. | Rotate + Shift | 89.5 | 95.4 | 68.0 | 1,591,100 |
6. | Rotate + Stretch | 90.0 | 95.9 | 77.4 | 1,591,100 |
7. | Shift + Stretch | 88.8 | 94.2 | 78.0 | 1,591,100 |
8. | Rotate + Shift + Stretch | 93.0 | 94.5 | 92.1 | 1,591,100 |
