Facial liveness detection in image biometrics
First Claim
1. A system for facial liveness detection in image biometrics, the system comprising:
- 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;
use an emitter of the system to emit light towards the face;
use a sensor of the system to measure an interaction of the light with the face; and
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
compare the interaction of the light with the face with a model of a live face, wherein in at least one test in the set of liveness models tests, the interaction of the light with the face provides a distance measurement between the face and the emitter, wherein the model of the live face includes an acceptable size range of a live face, and wherein to compare the interaction with the model includes the synchronicity detector to scale a visual light spectrum representation of the face acquired from the image sequence using the distance measurement to determine whether the face is within the acceptable size range of a live face; and
add 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.
3 Assignments
0 Petitions
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.
18 Citations
23 Claims
-
1. A system for facial liveness detection in image biometrics, the system comprising:
-
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; use an emitter of the system to emit light towards the face; use a sensor of the system to measure an interaction of the light with the face; and 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 compare the interaction of the light with the face with a model of a live face, wherein in at least one test in the set of liveness models tests, the interaction of the light with the face provides a distance measurement between the face and the emitter, wherein the model of the live face includes an acceptable size range of a live face, and wherein to compare the interaction with the model includes the synchronicity detector to scale a visual light spectrum representation of the face acquired from the image sequence using the distance measurement to determine whether the face is within the acceptable size range of a live face; and add 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 (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for facial liveness detection in image biometrics, the method comprising:
-
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; emitting light towards the face with an emitter; measuring an interaction of the light with the face; comparing the interaction with a model of a live face; and 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, wherein in at least one test in the set of liveness models tests, the interaction of the light with the face provides a distance measurement between the face and the emitter, wherein the model of the live face includes an acceptable size range of a live face, and wherein to compare the interaction with the model includes the synchronicity detector to scale a visual light spectrum representation of the face acquired from the image sequence using the distance measurement to determine whether the face is within the acceptable size range of a live face; 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 (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. At least one non-transitory machine readable medium including instructions for facial liveness detection in image biometrics, the instructions, when executed by a machine, cause the machine to perform operations comprising:
- 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;
emitting light towards the face with an emitter;
measuring an interaction of the light with the face;
comparing the interaction with a model of a live face; and
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, wherein in at least one test in the set of liveness models tests, the interaction of the light with the face provides a distance measurement between the face and the emitter, wherein the model of the live face includes an acceptable size range of a live face, and wherein to compare the interaction with the model includes the synchronicity detector to scale a visual light spectrum representation of the face acquired from the image sequence using the distance measurement to determine whether the face is within the acceptable size range of a live face;
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 (21, 22, 23)
- detecting a set of potential authentication faces in an image sequence captured during an authentication attempt by a user;
Specification