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. 2021 Apr 19;32(5):1810–1820. doi: 10.1109/TNNLS.2021.3070467

TABLE II. Number of Images per Class and per-Fold Before and After Data Augmentation.

Class # of Samples Training Samples Augmented Training Samples Test Samples
Bacterial Pneumonia 2760 2208 2208 552
Viral Pneumonia 1485 1188 2208 297
Normal 1579 1263 2208 316
COVID-19 462 370 2208 92
Total 6286 5029 8832 1257