US 12,148,249 B2
Method and apparatus for detecting liveness based on phase difference
Solae Lee, Suwon-si (KR); Youngjun Kwak, Seoul (KR); Sungheon Park, Suwon-si (KR); Byung In Yoo, Seoul (KR); Yong-Il Lee, Daejeon (KR); Hana Lee, Suwon-si (KR); and Jiho Choi, Seoul (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jan. 7, 2022, as Appl. No. 17/570,761.
Application 17/570,761 is a continuation of application No. 17/017,118, filed on Sep. 10, 2020, granted, now 11,244,181.
Claims priority of application No. 10-2020-0022858 (KR), filed on Feb. 25, 2020.
Prior Publication US 2022/0130176 A1, Apr. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06V 40/00 (2022.01); G06F 18/21 (2023.01); G06F 18/25 (2023.01); G06T 7/00 (2017.01); G06V 10/147 (2022.01); G06V 10/50 (2022.01); G06V 10/764 (2022.01); G06V 10/80 (2022.01); G06V 10/82 (2022.01); G06V 40/40 (2022.01)
CPC G06V 40/45 (2022.01) [G06F 18/21 (2023.01); G06F 18/25 (2023.01); G06T 7/97 (2017.01); G06V 10/147 (2022.01); G06V 10/50 (2022.01); G06V 10/764 (2022.01); G06V 10/809 (2022.01); G06V 10/82 (2022.01); G06T 2207/20084 (2013.01); G06T 2207/20132 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image processing method based on a phase difference, the image processing method comprising:
generating a first phase image based on first visual information of a first phase sensed by a first pixel group of a multiphase detection sensor;
generating a second phase image based on second visual information of a second phase sensed by a second pixel group of the multiphase detection sensor;
generating disparity information between the first phase image and the second phase image; and
generating object information based on the disparity information.