Iris liveness detection for semi-transparent contact lens spoofing

Abstract

Park's proposed liveness detection technique in [5] detects the fake irises by checking the pupil size variation and textural feature change in local iris area. A new semi-transparent contact lens based spoofing method is designed to overcome the liveness technique. The spoofing method generates artificial texture image by replicating imposter's natural iris texture adjacent to pupil boundary. Simulation results show that by printing the artificial texture image on semi-transparent contact lens, an imposter can pass through the liveness detection to illegally make an entry despite being in negative-watch lists. A countermeasure algorithm is suggested for improving the liveness detection technique. © 2011 Springer-Verlag.