Person identification using ocular biometrics with liveness detection
A method of assessing the identity of a person by one or more of: internal non-visible anatomical structure of an eye represented by the Oculomotor Plant Characteristics (OPC), brain performance represented by the Complex Eye Movement patterns (CEM), iris patterns, and periocular information. In some embodiments, a method of making a biometric assessment includes measuring eye movement of a subject, making an assessment of whether the subject is alive based on the measured eye movement, and assessing a person's identity based at least in part on the assessment of whether the subject is alive. In some embodiments, a method of making a biometric assessment includes measuring eye movement of a subject, assessing characteristics from the measured eye movement, and assessing a state of the subject based on the assessed characteristics.
1. A method of making a biometric assessment, comprising:
measuring eye movement of a subject;
making an assessment of whether the subject is alive based at least in part on the measured eye movement;
estimating one or more anatomical characteristics of an oculomotor plant of the subject based, at least in part, on at least a portion of the measured eye movement, and
assessing a person's identity based at least in part on the assessment of whether the subject is alive and on the estimated anatomical characteristics of the oculomotor plant of the subject.
2. The method of claim 1 , further comprising assessing one or more complex oculomotor characteristics of the subject based on the measured eye movement.
3. The method of claim 1 , further comprising detecting, based at least in part on the assessment of whether the subject is alive, a spoof to attempt an authentication of a person.
4. The method of claim 1 , further comprising estimating one or more one or more brain's control strategies in guiding visual attention via exhibition of complex eye movement patterns represented in part by spatial paths of the eye computed from the measured eye movement, wherein the assessment of the subject's identity is based at least in part on at least one of the brain control strategies.
5. The method of claim 1 , wherein measuring eye movement of the subject comprises eye tracking.
6. The method of claim 1 , wherein assessing the person's identity comprises matching biometric templates related to complex eye movement patterns and oculomotor plant characteristics with previously acquired templates for the subject.
7. The method of claim 1 , further comprising authenticating the person based on the assessment of the subject's identity.
8. The method of claim 1 , further comprising measuring one or more external characteristics of the eye of the subject, wherein the external characteristics comprise the characteristics of an iris or a periocular region of the eye of the person.
9. The method of claim 1 , wherein at least one of the oculomotor plant characteristic templates is based, at least in part, on previous measurements of eye movement of the subject.
10. The method of claim 1 , wherein assessing the subject's identity comprises applying one or more statistical tests to one or more oculomotor plant characteristics.
11. A method of making a biometric assessment, comprising:
measuring eye movement of a subject;
assessing one or more characteristics of the measured eye movement;
estimating one or more anatomical characteristics of an oculomotor plant of the subject based, at least in part, on at least a portion of the measured eye movement;
assessing a state of the subject based at least in part on the assessed characteristic; and
assessing a person's identity based at least in part on the estimated anatomical characteristics of the oculomotor plant of the subject.
12. The method of claim 11 , wherein at least one of the assessed characteristics comprises a complex oculomotor characteristic of the subject.
13. The method of claim 11 , wherein assessing a state of the subject comprises assessing whether the subject is alive.
14. The method of claim 11 , wherein assessing a state of the subject comprises assessing whether the subject is under the influence of a controlled substance.
15. The method of claim 11 , wherein assessing a state of the subject comprises assessing whether the subject is under coercion.
16. The method of claim 11 , wherein assessing a state of the subject comprises assessing a physical state of the subject.
17. The method of claim 11 , wherein assessing a state of the subject comprises assessing an emotional state of the subject.
18. The method of claim 11 , further comprising estimating one or more one or more brain's control strategies in guiding visual attention via exhibition of complex eye movement patterns represented in part by spatial paths of the eye computed from the measured eye movement, wherein the assessment of the person's identity is based at least in part on at least one of the brain control strategies.
19. A system, comprising:
an instrument configured to measure eye movement of a subject and one or more characteristics of an eye of the subject; and
a processor;
a memory coupled to the processor, wherein the memory comprises program instructions executable by the processor to implement:
measuring eye movement of a subject;
assessing one or more characteristics of the measured eye movement;
estimating one or more anatomical characteristics of an oculomotor plant of the subject based, at least in part, on at least a portion of the measured eye movement;
assessing a state of the subject based at least in part on the assessed characteristic; and;
assessing a person's identity based at least in part on the estimated anatomical characteristics of the oculomotor plant of the subject.