DWCA-YOLOv5: An Improve Single Shot Detector for Safety Helmet Detection

Table 1

Prior anchor box scales.

Feature map scale	Anchor box size
	Anchor 1	Anchor 2	Anchor 3
Small scale	(11.09,18)	(21.5,30.8)	(30.8,43)
Middle scale	(38.1, 60)	(52.3, 73.6)	(63,103.3)
Large scale	(89.2, 135)	(120, 207.5)	(209.4, 324)