Accuracy of a biometric system that includes standardized components from several suppliers.
In applications where components conform to standardized interfaces and functional specifications, it is possible to replace one component with another from a different manufacturer. Although conformity to specifications is a necessary condition for interoperability, it is often not sufficient, because the internal algorithmic action of the component is usually not regulated by the standard. Thus, a biometric detection algorithm might underperform some others despite being in conformity with the requirements. This article suggests that the appropriate means of quantifying biometric interoperability are to identify relevant performance metrics, to measure them, and to certify against them. For biometric sensors and also for detection, segmentation, and matching algorithms, these metrics will be usually be failure-to-acquire and enroll rates, and Type I and II recognition error rates.
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