US 12,014,570 B2
Face authentication apparatus
Taketo Kochi, Tokyo (JP); and Kenji Saito, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC Corporation, Tokyo (JP)
Filed on Feb. 24, 2023, as Appl. No. 18/114,015.
Application 18/114,015 is a continuation of application No. 17/490,695, filed on Sep. 30, 2021, granted, now 11,625,949.
Application 17/490,695 is a continuation of application No. 16/961,537, granted, now 11,163,979, issued on Nov. 2, 2021, previously published as PCT/JP2018/047065, filed on Dec. 20, 2018.
Claims priority of application No. 2018-003232 (JP), filed on Jan. 12, 2018.
Prior Publication US 2023/0222832 A1, Jul. 13, 2023
Int. Cl. G06V 40/00 (2022.01); G06V 40/16 (2022.01)
CPC G06V 40/166 (2022.01) [G06V 40/168 (2022.01); G06V 40/172 (2022.01)] 5 Claims
OG exemplary drawing
 
1. A gate apparatus comprising:
at least one memory configured to store instructions; and
at least one processor configured to execute the instructions to:
generate, based on similarity values in a similarity history of authentication success and authentication time, a function representing a change in the similarity as a function of time;
predict a change in the similarity based on the generated function, by determining a predicted future average similarly value based on the function; and
calculate a difference between the predicted future average similarity value and the threshold;
in response to the difference being greater than a preset value, decrease the threshold;
in response to the difference being less than the preset value, increase the threshold;
perform face authentication by comparing similarity between face information of a face of a target and reference face information of each of a plurality of registered users with the changed threshold; and
control at least one of a gate door, a gate bar, a gate lock, message, and sound based on a result of the face authentication.