Table 2. Pig detection performance.

Network	IoU_Threshold = 0.5			IoU_Threshold = 0.6
	YOLOv3	YOLOv4	Additional layer ▪ mish	YOLOv3	YOLOv4	Additional layer ▪ mish
Precision	0.91	0.93	0.92	0.76	0.81	0.76
Recall	0.88	0.88	0.88	0.73	0.77	0.73
F1-score	0.90	0.91	0.90	0.74	0.79	0.75
mAP	91.26	91.69	91.49	73.02	77.26	74.58

IoU, intersection over union; YOLO, you-only-look-once; mAP, mean average precision.