Methods and systems for enhancing user liveness detection

• US 10,217,009 B2
• Filed: 08/09/2016
• Issued: 02/26/2019
• Est. Priority Date: 08/09/2016
• Status: Active Grant

• Current Assignee: Corporation DAON Technology
• Original Assignee: Daon Holdings Limited
• Inventors: Ionita, Mircea
• Primary Examiner(s): Park, Chan
• Assistant Examiner(s): Tran, Mai
• Application Number:
  US15/231,863
• Publication Number:
  US 20180046871A1
• Time in Patent Office: 931 Days
• CPC Class Codes: G06F 18/22 Matching criteria, e.g. proximity measures
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints
• CPC Class Codes: G06V 10/17 using hand-held instruments
• CPC Class Codes: G06V 40/166 using acquisition arrangements
• CPC Class Codes: G06V 40/167 using comparisons between temporally consecutive images
• CPC Class Codes: G06V 40/172 Classification, e.g. identification
• CPC Class Codes: G06V 40/20 Movements or behaviour, e.g. gesture recognition recognition of facial expressions G06V40/16
• CPC Class Codes: G06V 40/45 Detection of the body part being alive

Abstract

A method for enhancing user liveness detection is provided that includes calculating, by a computing device, a first angle and a second angle for each frame in a video of captured face biometric data. The first angle is between a plane defined by a front face of the terminal device and a vertical axis, and the second angle is between the plane defined by the front face of the terminal device and a plane defined by the face of the user. Moreover, the method includes creating a first signal from the first angles and a second signal from the second angles, calculating a similarity score between the first and second signals, and determining the user is live when the similarity score is at least equal to a threshold score.

Claims

1. A method for enhancing user liveness detection comprising:

calculating, by a terminal device, a first angle and a second angle for each frame in a video of captured face biometric data, the first angle being between a plane defined by a front face of the terminal device and a vertical axis, the second angle being between the plane defined by the front face of the terminal device and a plane defined by the face of the user;

creating a first signal from the first angles and a second signal from the second angles;

calculating a similarity score between the first and second signals; and

determining the user is live when the similarity score is at least equal to a threshold score.

2. The method for enhancing user liveness detection in accordance with claim 1 further comprising:

obtaining biometric data from a frame in the video captured when the similarity score is at least equal to the threshold score;

generating a biometric template from the obtained biometric data;

comparing the generated biometric template against a corresponding user record biometric template; and

verifying the identity of the user when the generated and record templates match.

3. The method for enhancing user liveness detection in accordance with claim 1 further comprising:

verifying the identity of the user based on biometric data obtained from a frame in the video, the frame being captured when the similarity score is at least equal to the threshold score; and

successfully authenticating the user.

4. The method for enhancing user liveness detection in accordance with claim 1 further comprising:

analyzing the first and second calculated angles to verify the angles are usable for detecting user liveness; and

validating a pose of the user when the calculated angles are usable for detecting user liveness.

5. The method for enhancing user liveness detection in accordance with claim 1 further comprising:

analyzing face data included in the captured biometric data to detect anomalies; and

validating the pose of the user when anomalies are not detected.

6. The method for enhancing user liveness detection in accordance with claim 1 further comprising:

calculating an incremental change between all sequential frames of the first and second signals; and

determining whether or not the signals are faulty based on the incremental changes.

7. A terminal device for enhancing user liveness detection comprising:

a processor; and

a memory configured to store data, said terminal device being associated with a network and said memory being in communication with said processor and having instructions stored thereon which, when read and executed by said processor, cause said terminal device to;

calculate a first angle and a second angle for each frame in a video of captured face biometric data, the first angle being between a plane defined by a front face of said terminal device and a vertical axis, the second angle being between the plane defined by the front face of said terminal device and a plane defined by the face of the user;

create a first signal from the first angles and a second signal from the second angles;

calculate a similarity score between the first and second signals; and

determine the user is live when the similarity score is at least equal to a threshold score.

8. The terminal device for enhancing user liveness detection in accordance with claim 7, wherein the instructions when read and executed by said processor, cause said terminal device to:

obtain biometric data from a frame in the video captured when the similarity score is at least equal to the threshold score;

generate a biometric template from the obtained biometric data;

compare the generated biometric template against a corresponding user record biometric template; and

verify the identity of the user when the generated and record templates match.

9. The terminal device for enhancing user liveness detection in accordance with claim 7, wherein the instructions when read and executed by said processor, cause said terminal device to:

analyze the first and second calculated angles to verify the angles are usable for detecting user liveness; and

validate a pose of the user when the calculated angles are usable for detecting user liveness.

10. The terminal device for enhancing user liveness detection in accordance with claim 7, wherein the instructions when read and executed by said processor, cause said terminal device to:

analyze face data included in the captured biometric data to detect anomalies; and

validate the pose of the user when anomalies are not detected.

11. The terminal device for enhancing user liveness detection in accordance with claim 7, wherein the instructions when read and executed by said processor, cause said terminal device to:

verify the identity of the user based on biometric data obtained from a frame in the video, the frame being captured when the similarity score is at least equal to the threshold score; and

successfully authenticate the user.

12. The terminal device for enhancing user liveness detection in accordance with claim 7, wherein the instructions when read and executed by said processor, cause said terminal device to:

calculate an incremental change between all sequential frames of the first and second signals; and

determine whether or not the signals are faulty based on the incremental changes.

13. A computer program recorded on a non-transitory computer-readable recording medium included in a terminal device for enhancing user liveness detection results, the computer program being comprised of instructions, which when read and executed by the terminal device, cause the terminal device to:

calculate a first angle and a second angle for each frame in a video of captured face biometric data, the first angle being between a plane defined by a front face of the terminal device and a vertical axis, the second angle being between the plane defined by the front face of the terminal device and a plane defined by the face of the user;

create a first signal from the first angles and a second signal from the second angles;

calculate a similarity score between the first and second signals; and

determine the user is live when the similarity score is at least equal to a threshold score.

14. A computer program in accordance with claim 13 further comprising instructions, which when read and executed by the terminal device cause the terminal device to:

obtain biometric data from a frame in the video captured when the similarity score is at least equal to the threshold score;

generate a biometric template from the obtained biometric data;

compare the generated biometric template against a corresponding user record biometric template; and

verify the identity of the user when the generated and record templates match.

15. A computer program in accordance with claim 13 further comprising instructions, which when read and executed by the terminal device cause the terminal device to:

analyze the first and second calculated angles to verify the angles are usable for detecting user liveness; and

validate a pose of the user when the calculated angles are usable for detecting user liveness.

16. A computer program in accordance with claim 13 further comprising instructions, which when read and executed by the terminal device cause the terminal device to:

analyze face data included in the captured biometric data to detect anomalies; and

validate the pose of the user when anomalies are not detected.

17. A computer program in accordance with claim 13 further comprising instructions, which when read and executed by the terminal device cause the terminal device to:

verify the identity of the user based on biometric data obtained from a frame in the video, the frame being captured when the similarity score is at least equal to the threshold score; and

successfully authenticate the user.

18. A computer program in accordance with claim 13 further comprising instructions, which when read and executed by the terminal device cause the terminal device to:

calculate an incremental change between all sequential frames of the first and second signals; and

determine whether or not the signals are faulty based on the incremental changes.