Facial spoofing detection in image based biometrics
First Claim
Patent Images
1. A system for facial spoofing detection in image based biometrics, the method comprising:
- a biometric feature detector to create a marker for a representation of a face in a first plurality of images of a sequence of images, the marker corresponding to a facial feature;
an environmental feature detector to identify an environmental feature of an environment of the face across a second plurality of images of the sequence of images, wherein the environmental feature includes edges detected in the second plurality of images, wherein the edges are moving edges, and wherein the edges define a convex hull;
a synchronicity detector to quantify a correlation between the marker and the environmental feature in the sequence of images to produce a synchronicity metric, wherein the convex hull does not include the marker resulting in the synchronicity metric being reduced; and
a spoofing indication controller to indicate a spoofing attempt in response to the synchronicity metric meeting a threshold.
3 Assignments
0 Petitions
Accused Products
Abstract
Systems and techniques for facial spoofing detection in image based biometrics are described herein. A marker may be created for a representation of a face in a first plurality of images of a sequence of images. The marker corresponds to a facial feature of the face. An environmental feature of an environment of the face may be identified across a second plurality of images of the sequence of images. A correlation between the marker and the environmental feature in the sequence of images may be quantified to produce a synchronicity metric. A spoofing attempt may be indicated in response to the synchronicity metric meeting a threshold.
10 Citations
24 Claims
-
1. A system for facial spoofing detection in image based biometrics, the method comprising:
-
a biometric feature detector to create a marker for a representation of a face in a first plurality of images of a sequence of images, the marker corresponding to a facial feature; an environmental feature detector to identify an environmental feature of an environment of the face across a second plurality of images of the sequence of images, wherein the environmental feature includes edges detected in the second plurality of images, wherein the edges are moving edges, and wherein the edges define a convex hull; a synchronicity detector to quantify a correlation between the marker and the environmental feature in the sequence of images to produce a synchronicity metric, wherein the convex hull does not include the marker resulting in the synchronicity metric being reduced; and a spoofing indication controller to indicate a spoofing attempt in response to the synchronicity metric meeting a threshold. - View Dependent Claims (2, 3, 4, 5, 16, 17, 18)
-
-
6. A method for facial spoofing detection in image based biometrics, the method comprising:
-
creating, using a first group of circuits, a marker for a representation of a face in a first plurality of images of a sequence of images, the marker corresponding to a facial feature; identifying an environmental feature of an environment of the face across a second plurality of images of the sequence of images using a second group of circuits, wherein the environmental feature includes edges detected in the second plurality of images, wherein the edges are moving edges, and wherein the edges define a convex hull; quantifying, using a third group of circuits, a correlation between the marker and the environmental feature in the sequence of images to produce a synchronicity metric, wherein the convex hull does not include the marker resulting in the synchronicity metric being reduced; and indicating, using a fourth group of circuits, a spoofing attempt in response to the synchronicity metric meeting a threshold. - View Dependent Claims (7, 8, 9, 10, 19, 20, 21)
-
-
11. At least one machine readable medium that is not a transitory propagating signal, the at least one machine readable medium including instructions that, when executed by a machine, cause the machine to perform operations:
-
creating, using a first group of circuits, a marker for a representation of a face in a first plurality of images of a sequence of images, the marker corresponding to a facial feature; identifying an environmental feature of an environment of the face across a second plurality of images of the sequence of images using a second group of circuits, wherein the environmental feature includes edges detected in the second plurality of images, wherein the edges are moving edges, and wherein the edges define a convex hull; quantifying, using a third group of circuits, a correlation between the marker and the environmental feature in the sequence of images to produce a synchronicity metric, wherein the convex hull does not include the marker resulting in the synchronicity metric being reduced; and indicating, using a fourth group of circuits, a spoofing attempt in response to the synchronicity metric meeting a threshold. - View Dependent Claims (12, 13, 14, 15, 22, 23, 24)
-
Specification