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Biometric Permanence: Definition and Robust Calculation

机译:生物识别永久性:定义和鲁棒计算

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In this paper, we develop a novel metric, which we call biometric permanence, to characterize the stability of biometric features. First, we define permanence in terms of the change in false non-match ratio (FNMR) over a repeated sequence of enrolment and verification events for a given population. We consider how such a measure may be experimentally determined. Since changes in FNMR, for most biometric modalities, are small, any variability in the biometric capture over time will camouflage the changes of interest. To address this issue, a robust methodology is proposed which can isolate the visit-to-visit variability, and substantially improve the estimation. We develop a model for the visit biases, and provide extensive simulation results supporting the efficacy of the improved method.
机译:在本文中,我们开发了一种新的度量标准,称为生物特征持久性,以表征生物特征的稳定性。首先,我们根据给定人群的重复注册和验证事件序列中错误不匹配率(FNMR)的变化来定义持久性。我们考虑如何通过实验确定这种措施。由于对于大多数生物特征形式而言,FNMR的变化很小,因此生物特征捕获随时间的任何变化都将掩盖所关注的变化。为了解决这个问题,提出了一种鲁棒的方法,该方法可以隔离访问访问的可变性,并从根本上改善估计。我们为访问偏倚开发了一个模型,并提供了广泛的仿真结果,以支持改进方法的有效性。

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