why was not it successful to head detection?

[eeric]

training one epoch result:

Class Images Targets P R mAP@.5 mAP@.5:.95: 100%
all 3.3e+03 2.07e+04 0.516 0.858 0.815 0.47
person 3.3e+03 1.08e+04 0.408 0.811 0.729 0.44
head 3.3e+03 9.18e+03 0.48 0.862 0.814 0.345
helmet 3.3e+03 747 0.658 0.902 0.902 0.624

but no head and helmet detection, only detecting person.
and head detection is not synchronized with person detection
if relating to anchors calculation or not.

[PeterH0323]

请检查下数据集，感谢您的关注😃