Table 6.

Performance of the 4 best pretrained networks for defect classifier after fine tuning for a total of 15 epochs.

Model	Validation Loss	Validation Accuracy	Testing Accuracy
EfficientNetB1	0.76	0.66	0.72
EfficientNetB5	0.52	0.85	0.82
EfficientNetB4	0.54	0.79	0.72
DenseNet169	0.82	0.71	0.82