Numbers of image patches before and after offline augmentation in the training data for different classes
| Class | Numbers of image patches without offline augmentation | Numbers of image patches with offline augmentation |
| Score 0 | 1350 | 8100 |
| Score 1 | 616 | 3696 |
| Score 2 | 262 | 1572 |
| Score 3 | 442 | 2652 |