Systems and methods of biometric analysis to determine natural reflectivity
AssigneePrinceton Identity, Inc.
InventorsDavid Alan Ackerman, John Timothy Green
Life of this patent
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Abstract
Exemplary embodiments are directed to biometric analysis systems generally including one or more illumination sources, a camera, and an analysis module. The illumination sources are configured to illuminate at least a portion of a face of a subject. The camera is configured to capture one or more images of the subject during illumination of the face of the subject. The analysis module is configured to analyze the one or more images captured by the camera to determine an indication of liveliness of the subject and prevent spoofing.
Claims20
A biometric analysis system, comprising:
- one or more illumination sources configured to illuminate an iris of a subject at a first angle to avoid a retinal reflection of the subject and at a second angle to produce the retinal reflection of the subject;
- one or more cameras configured to capture one or more images of the subject during illumination of the subject with the one or more illumination sources at the first angle and capture one or more images of the subject during illumination of the subject with the one or more illumination sources at the second angle;
- and
- an analysis module configured to receive as input the one or more images captured at the first angle and the one or more images captured at the second angle, analyze the one or more images captured at the first angle to detect an absence of retinal reflection, analyze the one or more images captured at the second angle to detect retinal reflection, and determine a liveness of the subject based on the detected absence of retinal reflection and the detected retinal reflection.
A method of biometric analysis, comprising:
- illuminating an iris of a subject with one or more illumination sources of a biometric analysis system at a first angle to avoid a retinal reflection of the subject and at a second angle to produce the retinal reflection of the subject;
- capturing one or more images of the subject with one or more cameras of the biometric analysis system during illumination of the subject with the one or more illumination sources at the first angle and capturing one or more images of the subject with the camera during illumination of the subject with the one or more illumination sources at the second angle;
- receiving as input at an analysis module of the biometric analysis system the one or more images captured at the first angle and the one or more images captured at the second angle;
- analyzing the one or more images captured at the first angle to detect an absence of retinal reflection;
- analyzing the one or more images captured at the second angle to detect retinal reflection;
- and
- determining with the analysis module of the biometric analysis system a liveness of the subject based on the detected absence of retinal reflection and the detected retinal reflection.
A non-transitory computer-readable medium storing instructions for biometric analysis that are executable by a processing device, wherein execution of the instructions by the processing device causes the processing device to:
- illuminate an iris of a subject with one or more illumination sources of a biometric analysis system at a first angle to avoid a retinal reflection of the subject and at a second angle to produce the retinal reflection of the subject;
- capture one or more images of the subject with one or more cameras of the biometric analysis system during illumination of the subject with the one or more illumination sources at the first angle and capturing one or more images of the subject with the camera during illumination of the subject with the one or more illumination sources at the second angle;
- receive as input at an analysis module of the biometric analysis system the one or lore images captured at the first angle and the one or more images captured at the second angle;
- analyze the one or more images captured at the first angle to detect an absence of retinal reflection;
- analyze the one or more images captured at the second angle to detect retinal reflection;
- and
- determine with the analysis module of the biometric analysis system a liveness of the subject based on the detected absence of retinal reflection and the detected retinal reflection.
Dependencies are inferred from the claim text.