Table 2.

Minimum and maximum FPR and FNR for several values of $\alpha$ for the 141 images with tampering rate 50%.

Metrics	$\mathit{\alpha }=0$		$\mathit{\alpha }=0.01$		$\mathit{\alpha }=0.5$		$\mathit{\alpha }=1$		$\mathit{\alpha }=2$
	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max
FPR	0.438	0.662	0.105	0.201	0.101	0.195	0.099	0.194	0.098	0.194
FNR	0.124	0.305	0	0.021	0	0.019	0	0.018	0	0.016