Fig. 7.

Confidence scores for the VGG-16 model on unseen test set of COVID-19 for the two binary classification tasks of Normal vs. COVID-19 (left) and Pneumonia vs. COVID-19 (right) with synthetic data as additional training set. Both ${\mathcal{G}}_{\mathit{NC}}$ and ${\mathcal{G}}_{\mathit{PC}}$ are added to the original COVID-19 dataset