OCCUPANT AUTHENTICATION APPARATUS, OCCUPANT AUTHENTICATION METHOD, AND COMPUTER-READABLE MEDIUM

1 . An occupant authentication apparatus comprising:

at least one memory storing instructions; and

at least one processor configured to execute the instructions to:

authenticate an occupant of a vehicle by face authentication; and

change a criterion for determination of success and failure in the face authentication according to a traveling state of the vehicle.

2 . The occupant authentication apparatus according to claim 1 , wherein the at least one processor is configured to execute the instructions to change the criterion for determination according to whether the vehicle is traveling or stopped.

3 . The occupant authentication apparatus according to claim 1 , wherein the at least one processor is configured to execute the instructions to lower the criterion for determination when the vehicle is traveling as compared to when the vehicle is stopped.

4 . The occupant authentication apparatus according to claim 1 , wherein the at least one processor is configured to execute the instructions to change the criterion for determination further according to surrounding environment information of the vehicle.

5 . The occupant authentication apparatus according to claim 1 , wherein the at least one processor is configured to execute the instructions to the repeatedly perform the face authentication from when the occupant gets in the vehicle to when the occupant gets off the vehicle.

6 . The occupant authentication apparatus according to claim 1 , wherein the at least one processor is configured to execute the instructions to change the criterion for determination according to whether the vehicle is parked or temporarily stopped when the vehicle is stopped.

7 . The occupant authentication apparatus according to claim 1 , the at least one processor is further configured to execute the instructions to generate an alert in a case where the face authentication has failed in the authentication unit.

8 . The occupant authentication apparatus according to claim 1 , wherein the at least one processor is configured to execute the instructions to verify a face image of the occupant or a feature amount extracted from the face image with a registered image of a registrant or a feature amount extracted from the registered image, calculate a verification score indicating a matching degree between the occupant and the registrant, compare the calculated verification score with the criterion for determination, and determine whether or not the face authentication has succeeded based on a result of the comparison.

9 . The occupant authentication apparatus according to claim 8 , wherein the at least one processor is configured to execute the instructions to:

determine a threshold for the verification score as the criterion for determination, and

determine whether or not the face authentication has succeeded according to whether or not the verification score is equal to or higher than the threshold.

10 . An occupant authentication method comprising:

authenticating an occupant of a vehicle by face authentication; and

changing a criterion for determination of success and failure in the face authentication according to a traveling state of the vehicle.

11 . A non-transitory computer-readable medium storing a program for causing a processor to execute processing of:

authenticating an occupant of a vehicle by face authentication; and

changing a criterion for determination of success and failure in the face authentication according to a traveling state of the vehicle.