ABSTRACT:

Research on biometrics has noticeably increased. However, no single bodily or behavioral feature is ready to satisfy acceptability, speed, and reliability constraints of authentication in real applications. The present trend is so toward multimodal systems. In this paper, we tend to pander to some core problems related to the look of those systems and propose a novel modular framework, particularly, novel approaches for biometric systems (NABS) that we have a tendency to have implemented to address them. NABS proposal encompasses two attainable architectures based mostly on the comparative speeds of the involved biometries. It conjointly provides a completely unique answer for the data normalization problem, with the new quasi-linear sigmoid (QLS) normalization operate. This operate will overcome a number of common limitations, according to the presented experimental comparisons. A additional contribution is the system response reliability (SRR) index to measure response confidence. Its theoretical definition permits to require under consideration the gallery composition at hand in assigning a system reliability measure on one-response basis. The unified experimental setting aims at evaluating such aspects each separately and along, using face, ear, and fingerprint as check biometries. The results provide a positive feedback for the overall theoretical framework developed herein. Since NABS is designed to allow both a versatile alternative of the adopted design, and a variable compositions and/or substitution of its optional modules, i.e., QLS and SRR, it will support totally different operational settings.