YOLO-SD: A Real-Time Crew Safety Detection and Early Warning Approach

Table 3

Target confidence value in Figure 11.

Method	Figure 11(a)		Figure 11(b)		Figure 11(c)		Figure 11(d)	Figure 11(e)
	Left	Right	Left	Right	Left	Right
SSD	0.98	0.95	∕	0.79	0.97	0.99	0.79	0.93
				0.65
EfficientDet-d1	0.85	0.99	∕	∕	∕	0.95	0.98	∕
YOLO-SD	0.84	0.93	∕	0.83	0.90	0.94	0.92	0.93

Note. The SSD algorithm incorrectly detects the crew on the right side of Figure 11(b), and the crew has two wrong classification boxes.