Information processing system, information processing method, and recording medium for determining whether a user is a living body
AssigneeNEC Corporation
InventorHaruki Imai
Life of this patent
Estimating the term…
Abstract
An information processing system includes: a face direction acquisition unit that obtains a face direction of a user; a gaze direction acquisition unit that obtains a gaze direction of the user; a determination unit that determines whether or not the user is a living body, on the basis of a difference between the face direction and the gaze direction, when an angle of the face direction is greater than or equal to a predetermined threshold; and an output unit that outputs a result of the determination. According to such an information processing system, it is possible to accurately determine whether or not the user is a living body.
Claims8
An information processing system comprising:
- at least one memory that is configured to store instructions;
- and
- at least one processor that is configured to execute the instructions to obtain a face direction of a user;
- obtain a gaze direction of the user;
- calculate a difference between the face direction and the gaze direction based on an angle of the face direction being greater than or equal to a predetermined threshold;
- determine whether or not the user is a living body, based on the difference between the face direction and the gaze direction;
- output a result of the determination;
- calculate a score indicating a possibility that the user is a living body, from the difference between the face direction and the gaze direction;
- correct the score in accordance with the angle of the face direction;
- and
- determine whether or not the user is a living body, based on the corrected score.
An information processing method comprising:
- obtaining a face direction of a user;
- obtaining a gaze direction of the user;
- calculate a difference between the face direction and the gaze direction based on an angle of the face direction being greater than or equal to a predetermined threshold;
- determining whether or not the user is a living body, based on the difference between the face direction and the gaze direction;
- outputting a result of the determination;
- calculating a score indicating a possibility that the user is a living body, from the difference between the face direction and the gaze direction;
- correcting the score in accordance with the angle of the face direction;
- and
- determining whether or not the user is a living body, based on the corrected score.
A non-transitory recording medium on which a computer program that allows a computer to execute an information processing method is recorded, the information processing method including:
- obtaining a face direction of a user;
- obtaining a gaze direction of the user;
- calculate a difference between the face direction and the gaze direction based on an angle of the face direction being greater than or equal to a predetermined threshold;
- determining whether or not the user is a living body, based on the difference between the face direction and the gaze direction;
- outputting a result of the determination;
- calculating a score indicating a possibility that the user is a living body, from the difference between the face direction and the gaze direction;
- correcting the score in accordance with the angle of the face direction;
- and
- determining whether or not the user is a living body, based on the corrected score.
Dependencies are inferred from the claim text.