IRIS RECOGNITION APPARATUS, IRIS RECOGNITION METHOD, COMPUTER PROGRAM AND RECORDING MEDIUM

    公开(公告)号:US20240037990A1

    公开(公告)日:2024-02-01

    申请号:US18484601

    申请日:2023-10-11

    CPC classification number: G06V40/197 G06V10/141

    Abstract: An iris recognition apparatus is provided with: an irradiating device that is capable of irradiating light to a target person to be recognized; an acquiring device that acquires a first image which imaged a first imaging range including at least a face of the target person; and a determining device that determines an irradiation mode of light irradiated from the irradiating device to the target person when imaging a second image including an area, which includes an eye of the target person, and corresponding to a second imaging range, which is narrower than the first imaging range, based on the first image.

    Calculation device, information processing method, and storage medium

    公开(公告)号:US11481996B2

    公开(公告)日:2022-10-25

    申请号:US17276389

    申请日:2018-09-20

    Inventor: Ryuichi Akashi

    Abstract: A calculation device includes: an image input unit that receives, as an input, an image acquired by an image acquisition device that photographs a prescribed area; a visibility evaluation unit that calculates an evaluation value showing the visibility of a detection object in the image, on the basis of the contrast of the image and noise information showing the degree of noise included in the image; a calculation unit that calculates a maximum visually recognizable distance, which is the maximum distance from the image acquisition device to the detection object at which the detection object is visually recognized in the image, based on the evaluation value, a value set as the actual size of the detection object in the image, and the image angle of the image acquisition device; and an output unit that generates and outputs output information based on the maximum visually recognizable distance.

    Illumination control apparatus, method, system, and computer readable medium

    公开(公告)号:US12231778B2

    公开(公告)日:2025-02-18

    申请号:US17431545

    申请日:2020-02-12

    Abstract: An illumination device emits light toward a moving subject. A controller controls light emitted from the illumination device so that the amount of light applied to the subject is adjusted to a specific amount or smaller. For example, when the illumination device emits light in a pulsed manner, the controller may control the amount of light applied to the subject by controlling at least one of the pulse width and the pulse intensity of the light. The controller may, for example, control the light emitted from the illumination device according to the distance between the illumination device and the subject.

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