Table 3. Accuracy, recall, specificity, precision and F1 score for different network architectures used for classification of image quality into “good,” “off-center,” “signal-shielded,” and “other.” The best option within each metric is in bold.

Network	class	Re (%)	SP (%)	PR (%)	OA (%)	OR (%)	OS (%)	OP (%)	F1 score (%)
VGG	Good	97	95.33	87.39	95	95.33	97	98.96	97.11
	Off-center	94	98.33	94.95
	S-shield	92	99.33	97.87
	Other	95	99.67	98.96
ResNet-18	Good	98	96.67	90.74	95.75	96.67	98	99.32	97.98
	Off-center	97	98.33	95.1
	S-shield	92	99.67	98.93
	Other	96	99.67	98.97
ResNet-50	Good	97	97.33	92.38	96.25	97	98.98	98.15	98.15
	Off-center	92	98.67	95.83
	S-shield	96	98.33	95.05
	Other	97	99.67	98.98
Inception-V3	Good	95	96.67	90.48	96.25	96.67	95	98.31	97.48
	Off-center	93	99.33	97.89
	S-shield	99	98.33	95.19
	Other	95	99.67	98.96

S-shield: Signal-shield