Safety Helmet Wearing Detection Based on Jetson Nano and Improved YOLOv5

Table 3

Detection performance of the models improved by the model optimization method.

Models	Model format	Processing speed (ms/f)	Precision (%)	Recall rate (%)
YOLOv5s	pt	116.9	90.5	88.7
YOLOv5s (after optimization)	Engine	67.3	90.4	88.8
YOLOv5m	pt	277.1	91.5	89.4
YOLOv5m (after optimization)	Engine	171.2	90.4	90.4
YOLOv5l	pt	500.9	90.5	90.7
YOLOv5l (after optimization)	Engine	318.5	90.6	90.6