Performance Improvement of Multibiometric Authentication System Using Score Level Fusion with Ant Colony Optimization

Figure 5

ROC Curves of various fusion methods. (a) ROC curve shows the fusion of face and left iris with EER 8.36%. (b) ROC curve shows the fusion of face and right iris with EER 8.62%. (c) ROC curve shows the fusion of left iris and right iris with EER 3.51%. (d) ROC curve shows the fusion of face, left iris, and right iris with EER 4.54%. The lower Equal Error Rate gives more accuracy in the biometric system, as per figures, (d) which gives lower EER compare to remaining three fusion methods. So, fusion of left iris and right iris based on multimodel biometric system which gives the higher accuracy rather than any other fusion methods.

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(b)

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(d)