Fairness measures for biometric quality assessment
This work addresses fairness in biometric systems, which is crucial for preventing discriminatory outcomes in applications like security and identification, though it appears incremental as it focuses on developing measures rather than a novel solution.
The paper tackles the problem of demographic bias in biometric quality assessment algorithms by proposing and comparing multiple fairness measures to evaluate quality components across demographic groups, aiming to ensure equal performance for all individuals.
Quality assessment algorithms measure the quality of a captured biometric sample. Since the sample quality strongly affects the recognition performance of a biometric system, it is essential to only process samples of sufficient quality and discard samples of low-quality. Even though quality assessment algorithms are not intended to yield very different quality scores across demographic groups, quality score discrepancies are possible, resulting in different discard ratios. To ensure that quality assessment algorithms do not take demographic characteristics into account when assessing sample quality and consequently to ensure that the quality algorithms perform equally for all individuals, it is crucial to develop a fairness measure. In this work we propose and compare multiple fairness measures for evaluating quality components across demographic groups. Proposed measures, could be used as potential candidates for an upcoming standard in this important field.