Mobile authentication of copy detection patterns

EURASIP Journal on Information Security

Table 1 The classification error of the supervised multi-class classifier (in %)

Classification type	Fakes #1 white	Fakes #1 gray	Fakes #2 white	Fakes # 2 gray
2-class^a	0.28
3-class	0.78		0.35
5-class	23.26	21.56	16.88	11.35

^a\(P_e\) corresponds to the \(P_{miss}\) for the originals and to the \(P_{fa}\) for the fakes