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How to calculate FAR and FRR for a biometric system

Hello everyone,

I want to be sure i have clear understanding on this concept. I know to calculate FAR (False Acceptance Rate) and FRR (False Rejection Rate) i have to vary the system at different thresholds to different genuine and impostors. For a given threshold if the FRR is the number of classes in the training set whose distance with the same class test sample is greater than the threshold. FAR is the number of classes in the training set whose distance with different class test sample is greater than the threshold.

Please will need confirmation any who understands this concept. I want know if my understanding right before writing codes.

Thanks in advance.

How to calculate FAR and FRR for a biometric system

Hello everyone,

I want to be sure i have clear understanding on this concept. I know to calculate FAR (False Acceptance Rate) and FRR (False Rejection Rate) i have to vary the system at different thresholds to different genuine and impostors. For a given threshold if the FRR is the number of classes in the training set whose distance with the same class test sample is greater than the threshold. FAR is the number of classes in the training set whose distance with different class test sample is greater than the threshold.

Please will need confirmation any who understands this concept. I want know if my understanding right before writing codes.

Thanks in advance.