Table 7.

Classification results of different layers.

Layer	Accuracy (%)
14th layer	53.65
24th layer	66.97
FC layer	68.67
(14th layer + PCA) + FC	68.48
(24th layer + PCA) + FC	68.85
(14th layer + PCA) + (24th layer + PCA) + FC	69.04
(14th layer + PCA) + (24th layer + PCA) + (Conv2D + PCA) + FC	69.61