Table 6.

Comparison of the proposed method with previous methods using CASIA v4.0 distance database based on NICE-I evaluation protocol.

Method	${\mathit{E}}_{\mathit{a}}$
Tan et al. [73]	0.0113
Liu et al. [44] (HCNNs)	0.0108
Tan et al. [76]	0.0081
Zhao et al. [79]	0.0068
Liu et al. [44] (MFCNs)	0.0059
SegNet-Basic [57]	0.0044
Proposed IrisDenseNet	0.0034