FACIAL LIVENESS DETECTION IN IMAGE BIOMETRICS
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Accused Products
Abstract
System and techniques for spoofing detection in image biometrics are described herein. A sequence of images may be obtained from a camera; a first plurality of images in the sequence of images including a representation of a user body part, and a second plurality of images in the sequence of images including a representation of an environment of the user. A marker may be created for the representation of the body part. A feature of the environment of the user present during the second plurality of images may be identified in the sequence of images using a third group of circuits. A correlation between the marker and the feature of the environment in the sequence of images may be quantified to produce a synchronicity metric of the degree to which the marker and the feature of the environment correlate.
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Citations
48 Claims
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1-25. -25. (canceled)
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26. A system for facial liveness detection in image biometrics, the system comprising:
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a biometric feature detector to detecting a set of potential authentication faces in an image sequence captured during an authentication attempt by a user; a liveness indication controller to; for each face in the set of potential authentication faces; invoke a synchronicity detector to apply a set of liveness model tests to the face, each test in the set of liveness tests including an assay that differs between a live face and a face simulated on a pictorial representation of a face, the assay operating independently of body arrangement instructions given to the user; and adding the face to a set of authentication faces when the result of the set of liveness model tests meets a threshold; and an authentication controller to apply facial authentication to faces in the set of authentication faces. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. The system of claim 37, wherein whether the face appears within the outline across the plurality of the sequence of images is true if the face appears in an area of an image in the sequence of images and the outline encloses the area in a set of preceding images in the sequence of images, the set of preceding images selected based on a movement threshold applied to the outline.
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38. A method for facial liveness detection in image biometrics, the method comprising:
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detecting a set of potential authentication faces in an image sequence captured during an authentication attempt by a user; for each face in the set of potential authentication faces, perform the operations of; applying a set of liveness model tests to the face, each test in the set of liveness tests including an assay that differs between a live face and a face simulated on a pictorial representation of a face, the assay operating independently of body arrangement instructions given to the user; and adding the face to a set of authentication faces when the result of the set of liveness model tests meets a threshold; and applying facial authentication to faces in the set of authentication faces. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification