US 12,002,281 B2
Method and apparatus for fingerprint identification, and electronic device
Chao Yuan, Guangdong (CN); Xiaogang Qing, Guangdong (CN); and Jiemin Zeng, Guangdong (CN)
Assigned to SHENZHEN GOODIX TECHNOLOGY CO., LTD., Guangdong (CN)
Filed by SHENZHEN GOODIX TECHNOLOGY CO., LTD., Guangdong (CN)
Filed on Jun. 13, 2022, as Appl. No. 17/838,845.
Claims priority of application No. 202111669425.8 (CN), filed on Dec. 31, 2021.
Prior Publication US 2023/0215209 A1, Jul. 6, 2023
Int. Cl. G06V 40/13 (2022.01); G06V 10/98 (2022.01); G06V 40/12 (2022.01)
CPC G06V 40/13 (2022.01) [G06V 10/993 (2022.01); G06V 40/1365 (2022.01)] 16 Claims
OG exemplary drawing
 
1. A method for fingerprint identification, comprising:
acquiring a first image collected by a fingerprint sensor at a first exposure time;
determining whether to acquire a second image collected by the fingerprint sensor at a second exposure time according to the first image, wherein the second exposure time is continuous with the first exposure time, and a length of the second exposure time is greater than or equal to a length of the first exposure time;
performing fingerprint identification according to the first image in a case that it is determined not to acquire the second image; or performing fingerprint identification according to the first image and the second image in a case that it is determined to acquire the second image;
wherein the determining whether to acquire a second image collected by the fingerprint sensor at a second exposure time according to the first image comprises:
preprocessing the first image to acquire a value of a corresponding fingerprint parameter, wherein the fingerprint parameter comprises any one of a fingerprint signal, a fingerprint image quality score, and pixel data of the fingerprint sensor when collecting an image; and
determining to acquire the second image in a case that it is determined that the value of the fingerprint parameter is less than a first threshold;
wherein the preprocessing the first image to acquire a value of a corresponding fingerprint parameter comprises:
preprocessing the first image to acquire the value of the corresponding fingerprint parameter in a case that it is determined that the first image is not a fingerprint pattern.