Biometric Recognition Databases: A Survey

In the past few decades, biometrics have developed rapidly, and such achievements are inseparable from the support of a variety of single-mode and multi-modal biometric databases. The use of a biometric database makes it possible to compare the performance consistency of different recognition technologies. The collection of these databases is a time-consuming and resource-intensive task for researchers, especially for multimodal databases involving multiple biological characteristics. This paper reviews some single-mode and multi-mode biometric databases which are widely used in the world at present.