US 12,450,945 B1
Fingerprint image generating methods and devices
Chao Ma, Xi'an (CN); Pengtao Zhang, Xi'an (CN); and Chao Wei, Xi'an (CN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Oct. 15, 2024, as Appl. No. 18/915,483.
Claims priority of application No. 202411311474.8 (CN), filed on Sep. 19, 2024.
Int. Cl. G06V 40/16 (2022.01); G06V 10/75 (2022.01); G06V 40/40 (2022.01)
CPC G06V 40/172 (2022.01) [G06V 10/751 (2022.01); G06V 40/45 (2022.01)] 21 Claims
OG exemplary drawing
 
1. A fingerprint image generating device, comprising:
processing circuitry, the processing circuitry configured to
obtain M sample fingerprint images;
generate N approximate images according to N target similarities based on each of the M sample fingerprint images, each of the N target similarities being a similarity value between a respective one of the N approximate images and a respective one of the M sample fingerprint images on which the respective one of the N approximate images is based, M and N being integers greater than 1;
analyze a difference between each one of the M sample fingerprint images and the respective one of the N approximate images, to obtain (M×N) difference parameters, each one of the (M×N) difference parameters quantifying a difference between each one of the respective M sample fingerprint images and the respective N approximate images, each one of the (M×N) difference parameters being associated with the similarity value between the respective one of the M sample fingerprint images and the respective one of the N approximate images, such that each of the N target similarities is associated with M difference parameters;
statistically calculate the M difference parameters respectively associated with P similarities among the N target similarities respectively to obtain difference statistical parameters respectively corresponding to the P similarities, P being an integer greater than or equal to 1;
obtain a reference fingerprint image; and
generate simulated fingerprint images respectively corresponding to the P similarities based on the reference fingerprint image and the difference statistical parameters respectively corresponding to the P similarities.