US 12,217,396 B2
Method and apparatus for restoring image of fingerprint sensor
Kyoung Hun Been, Asan-si (KR); Mi Young Kim, Hwaseong-si (KR); Jin Woo Kim, Hwaseong-si (KR); and Byeong Kyu Jeon, Busan (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jul. 14, 2022, as Appl. No. 17/812,455.
Claims priority of application No. 10-2021-0127858 (KR), filed on Sep. 28, 2021.
Prior Publication US 2023/0101088 A1, Mar. 30, 2023
Int. Cl. G06T 5/50 (2006.01); G06V 40/13 (2022.01)
CPC G06T 5/50 (2013.01) [G06V 40/1306 (2022.01)] 20 Claims
OG exemplary drawing
 
1. A method for restoring an image of a fingerprint sensor, the method comprising:
capturing, by the fingerprint sensor, a fake fingerprint image from a fake fingerprint;
calculating a phase of the fake fingerprint from the fake fingerprint image;
capturing a plurality of target fingerprint images at measurement times by a fingerprint sensor disposed on a rear side of a display panel;
applying the calculated phase to each of the plurality of acquired target fingerprint images; and
combining information from each of the plurality of target fingerprint images to generate a final fingerprint image.