AI-Based W-Band Suspicious Object Detection System for Moving Persons: Two-Stage Walkthrough Configuration and Recognition Optimization

Table 5

An example of precision for two-stage screening ().

Objects	1st screening		2nd screening		Total PT
	Detection result	P1	Classification result	P2
Knives	Metal detection	40%	Knives	76.5%	85.9%
Guns			Guns	81.0%	88.6%
Smartphones			Smartphones	66.7%	80.0%
Nonpossession	No metal	40%	Nonpossession	100.0%	100.0%
Average	40%		81.1%		88.6%