TABLE 1.
Learning scheme of the proposed convolutional neural network (CNN) model
| Number of images | |||||
|---|---|---|---|---|---|
| Classification groups | Each group | Total | Training set (60%) | Validation set (20%) | Test set (20%) |
| Mild | 1000 | 3260 | 1956 | 652 | 652 |
| Moderate | 950 | ||||
| Critical | 600 | ||||
| Severe | 710 | ||||
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