Basic System Errors
The specifications for a biometric authentication system will usually include requirements like maximum allowable error rates. There are a number of biometric error types, expressed as error rates or error percentages, that need to be understood before a solution is designed and before a particular biometric is selected. Some of these errors are inherent with biometric authentication being just a kind of pattern recognition application; other errors are more specifically related to biometric authentication systems. What is clear is that any biometric authentication system will make mistakes, and that the true value of the various error rates for a matcher cannot be computed or theoretically established; it is only possible to obtain statistical estimates of the errors using test databases of biometric samples.
KeywordsReceiver Operating Characteristic Receiver Operating Characteristic Curve Equal Error Rate Biometric System False Reject Rate
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