Face authentication method

1 . A face authentication method comprising:

extracting a plurality of face images in a captured image captured in front of a first gate, the plurality of face images corresponding to people accompanying each other in front of the first gate;

determining whether or not a first person of a first face image, among the plurality of face images, satisfies an exclusion condition of a face authentication process, the exclusion condition indicating an age group;

performing the face authentication process on one or more persons in the captured image by:

excluding the first face image of the first person satisfying the exclusion condition, and

performing the face authentication process on a second face image of a second person, among the plurality of face images, to authenticate whether or not the second person of the second face image is a registered person; and

sending a command to the first gate to open the first gate to allow entry of the second person and the first person when the face authentication process succeeded, the face authentication process being performed on at least one of the plurality of face images simultaneously extracted from the captured image excluding the first face image of the first person satisfying the exclusion condition.

2 . The face authentication method according to claim 1 , further comprising

based on at least one of the plurality of face images, detecting an attribute of the first person of the first face image, and determining whether or not the first person satisfies the exclusion condition based on the attribute.

3 . The face authentication method according to claim 2 , further comprising

based on at least one of the plurality of face images, detecting an age of the first person of the first face image, and determining whether or not the first person satisfies the exclusion condition based on the age.

4 . The face authentication method according to claim 3 , further comprising

determining that the first person satisfies the exclusion condition when the age of the first person of the first face image is an age that is determined to be a child according to a preset reference.

5 . The face authentication method according to claim 1 , further comprising

based on the plurality of face images, detecting an attribute of the first person of the first face image, and determining whether or not the first person satisfies the exclusion condition based on the attribute.

6 . The face authentication method according to claim 5 , further comprising

based on a distance between persons of the plurality of face images, detecting an age of the first person of the first face image, among the plurality of face images, and determining whether or not the first person satisfies the exclusion condition based on the age.

7 . The face authentication method according to claim 1 , further comprising

before performing calculation of a feature amount on the first face image required for the face authentication process, determining whether or not the first person of the first face image satisfies the exclusion condition based on the first face image.

8 . The face authentication method according to claim 1 ,

wherein the face authentication process is performed on all of the plurality of face images simultaneously extracted from the captured image excluding the first face image of the first person satisfying the exclusion condition.

9 . A face authentication device comprising:

at least one memory configured to store instructions; and

at least one processor configured to execute instructions to:

extract a plurality of face images in a captured image captured in front of a first gate, the plurality of face images corresponding to people accompanying each other in front of the first gate;

determine whether or not a first person of a first face image, among the plurality of face images, satisfies an exclusion condition of a face authentication process, the exclusion condition indicating an age group;

perform the face authentication process on one or more persons in the captured image by:

excluding the first face image of the first person satisfying the exclusion condition, and

performing the face authentication process on a second face image of a second person, among the plurality of face images, to authenticate whether or not the second person of the second face image is a registered person; and

send a command to the first gate to open the first gate to allow entry of the second person and the first person when the face authentication process succeeded, the face authentication process being performed on at least one of the plurality of face images simultaneously extracted from the captured image excluding the first face image of the first person satisfying the exclusion condition.

10 . The face authentication device according to claim 9 , wherein the at least one processor is configured to execute the instructions to

based on at least one of the plurality of face images, detect an attribute of the first person of the first face image, and determine whether or not the first person satisfies the exclusion condition based on the attribute.

11 . The face authentication device according to claim 10 , wherein the at least one processor is configured to execute the instructions to

based on at least one of the plurality of face images, detect an age of the first person of the first face image, and determine whether or not the first person satisfies the exclusion condition based on the age.

12 . The face authentication device according to claim 11 , wherein the at least one processor is configured to execute the instructions to

determine that the first person satisfies the exclusion condition when the age of the first person of the first face image is an age that is determined to be a child according to a preset reference.

13 . The face authentication device according to claim 9 , wherein the at least one processor is configured to execute the instructions to

based on the plurality of face images, detect an attribute of the first person of the first face image, and determine whether or not the first person satisfies the exclusion condition on a basis of the attribute.

14 . The face authentication device according to claim 13 , wherein the at least one processor is configured to execute the instructions to

based on a distance between persons of the plurality of face images, detect an age of the first person of the first face image, among the plurality of face images, and determine whether or not the first person satisfies the exclusion condition based on the age.

15 . The face authentication device according to claim 9 , wherein the at least one processor is configured to execute the instructions to

before performing calculation of a feature amount on the first face image required for the face authentication process, determine whether or not the first person of the first face image satisfies the exclusion condition based on the first face image.

16 . The face authentication device according to claim 9 , wherein

the face authentication process is performed on all of the plurality of face images simultaneously extracted from the captured image excluding the first face image of the first person satisfying the exclusion condition.

17 . A non-transitory computer-readable medium storing thereon a program comprising instructions for causing an information processing device to execute processing to:

extract a plurality of face images in a captured image captured in front of a first gate, the plurality of face images corresponding to people accompanying each other in front of the first gate;

determine whether or not a first person of a first face image, among the plurality of face images, satisfies an exclusion condition of a face authentication process, the exclusion condition indicating an age group;

perform the face authentication process on one or more persons in the captured image by:

excluding the first face image of the first person satisfying the exclusion condition, and

performing the face authentication process on a second face image of a second person, among the plurality of face images, to authenticate whether or not the second person of the second face image is a registered person; and

send a command to the first gate to open the first gate to allow entry of the second person and the first person when the face authentication process succeeded, the face authentication process being performed on at least one of the plurality of face images simultaneously extracted from the captured image excluding the first face image of the first person satisfying the exclusion condition.

18 . The face authentication method according to claim 1 , further comprising

sending the command to the first gate to open the first gate to allow entry of the second person and the people accompanying the second person when the face authentication process succeeded.