Patent ID: 11861943
Assignee: NEC CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  A | IPC G

Claim 10:
11. An iris recognition method comprising:
causing a camera to acquire a first image at a first imaging range, including at least a face of a target person to be recognized, while the target person is irradiated with light by a light source;
determining, based on the first image, an irradiation mode of the light for acquiring a second image at a second imaging range narrower than the first imaging range, including an eye of the target person;
causing the light source to irradiate the target person with the light according to the irradiation mode that has been determined; and
causing the camera to acquire the second image at the second imaging range, including at least the eye of the target person, while the target person is irradiated with the light by the light source according to the irradiation mode that has been determined,
wherein the irradiation mode of the light for acquiring the second image is set as equal to an irradiation mode of the light with which the target person was irradiated when the camera acquired the first image when no eyeglasses are detected within the first image.