title: Dual-LED imaging for finger liveliness detection and its evaluation with replicas.
abstract: Unattended fingerprint identification systems need to reject input attempts by a replica. Previously, we proposed detecting the color changes of a finger during an input action as a signature of liveliness. To improve its reliability, a dual-LED imaging system is investigated. It employs two LEDs with peak emissions at 530 and 630 nm to cover the spectral ranges where live fingers show characteristic changes. Using nine types of replicas and the live fingers of 42 participants, we have recorded and analyzed 153 input trials. The two groups of data are successfully separated by some defined criteria.
authors.affiliation: Department of Photonics, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan.
authors.forename: Katsuki
authors.initials: K
authors.lastname: Tai
authors.forename: Etsuji
authors.initials: E
authors.lastname: Matsuyama
authors.forename: Masashi
authors.initials: M
authors.lastname: Kurita
authors.forename: Ichiro
authors.initials: I
authors.lastname: Fujieda
mesh_terms: D040761:Biomimetic Materials; D003878:Dermatoglyphics; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005385:Fingers / Q000033:anatomy & histology* / Q000502:physiology*; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008029:Lighting / Q000295:instrumentation* / Q000379:methods; D010783:Photometry / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012666:Semiconductors; D012680:Sensitivity and Specificity