US 11,869,272 B2
Liveness test method and apparatus and biometric authentication method and apparatus
Youngjun Kwak, Seoul (KR); Minsu Ko, Suwon-si (KR); Youngsung Kim, Suwon-si (KR); Heewon Kim, Seoul (KR); Ju Hwan Song, Suwon-si (KR); Byung In Yoo, Seoul (KR); Seon Min Rhee, Seoul (KR); Yong-il Lee, Daejeon (KR); Jiho Choi, Seoul (KR); and Seungju Han, Seoul (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jun. 12, 2020, as Appl. No. 16/899,935.
Claims priority of application No. 10-2019-0150537 (KR), filed on Nov. 21, 2019.
Prior Publication US 2021/0158509 A1, May 27, 2021
Int. Cl. G06V 40/16 (2022.01); G06T 7/73 (2017.01); G06F 21/32 (2013.01); G06T 7/00 (2017.01); G06V 10/143 (2022.01); G06V 40/40 (2022.01)
CPC G06V 40/166 (2022.01) [G06F 21/32 (2013.01); G06T 7/0012 (2013.01); G06T 7/73 (2017.01); G06V 10/143 (2022.01); G06V 40/161 (2022.01); G06V 40/168 (2022.01); G06V 40/40 (2022.01); G06T 2207/10028 (2013.01); G06T 2207/10048 (2013.01); G06T 2207/30201 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A processor-implemented method, comprising:
generating a preprocessed infrared (IR) image by performing first preprocessing based on first feature points detected in a bounding region of an object included in an IR image;
generating a preprocessed depth image by performing second preprocessing based on second feature points detected in a bounding region of the object included in a depth image, the second feature points being detected by matching positions of the first feature points detected in the IR image to the depth image; and
determining whether the object is a genuine object based on the preprocessed IR image and the preprocessed depth image
wherein the generating of the preprocessed IR image comprises:
generating a first intermediate image based on pixel values of a current pixel and neighboring pixels of the current pixel in the IR image;
generating a second intermediate image by performing normalization on the IR image; and
generating the preprocessed IR image based on the IR image, the first intermediate image, and the second intermediate image.