Real-eye detection using light of different polarization rotations

Abstract

A method of a biometric recognition system of performing real-eye detection, and a biometric recognition system performing the method. In an aspect, a method of a biometric recognition system of performing real-eye detection is provided. The method comprises capturing a plurality of images comprising a representation of an eye of the individual, which images are captured utilizing polarized light reflected at the eye and received at a polarization-sensitive camera capturing said images, wherein for each image being captured a different polarization rotation is selected, detecting, from the representation in each captured image, birefringent features of a cornea of the individual, and determining, by matching the detected birefringent cornea features of the captured images with the expected birefringent cornea features, whether the detected birefringent cornea features are correctly rendered in at least one of the captured images; and if so determining that the eye is a real eye.

Dependencies are inferred from the claim text.