US 12,125,313 B2
Method and system for chrominance-based face liveness detection
Konstantin Levinski, Singapore (SG); Iskandar Goh, Singapore (SG); Tien Hiong Lee, Singapore (SG); Weng Sing Tang, Singapore (SG); and Xin Qu, Singapore (SG)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC Corporation, Tokyo (JP)
Filed on Dec. 1, 2023, as Appl. No. 18/526,567.
Application 18/526,567 is a continuation of application No. 17/618,694, granted, now 11,954,940, previously published as PCT/JP2020/028772, filed on Jul. 17, 2020.
Claims priority of application No. 10201906721S (SG), filed on Jul. 19, 2019.
Prior Publication US 2024/0112495 A1, Apr. 4, 2024
Int. Cl. G06K 9/20 (2006.01); G06K 9/62 (2022.01); G06V 10/141 (2022.01); G06V 40/16 (2022.01); G06V 40/40 (2022.01)
CPC G06V 40/166 (2022.01) [G06V 10/141 (2022.01); G06V 40/172 (2022.01); G06V 40/45 (2022.01)] 19 Claims
OG exemplary drawing
 
1. A method for liveness detection authentication of a facial image of a user comprising:
outputting guidance to make the user arrange a display and a camera to be lower than a face of the user;
illuminating the facial image with a first color by a display;
acquiring a first image of the facial image illuminated with the first color by the camera that is arranged to be lower than the face when the display and the camera are arranged to be lower than the face by the user;
illuminating the facial image with the second color by the display;
acquiring a second image of the facial image illuminated with the second color by the camera that is arranged to be lower than the face when the display and the camera are arranged to be lower than the face by the user; and
determining if the facial image is consistent with a three-dimensional (3D) structure based on a combination of the first and second images;
determining if the facial image matches the user by comparing a combination of the first and second images to an image of the user, the image of the user being stored in a memory.