System, method and computer program product for bend information estimation

    公开(公告)号:US10813701B2

    公开(公告)日:2020-10-27

    申请号:US15591784

    申请日:2017-05-10

    Abstract: Example embodiments of the present invention relate to systems methods and computer program products for bend estimation. The system comprises a first and second light absorbers disposed at a substantially same position along an axis of a light guide and enabled to absorb first and second respective amounts of a plurality of wavelengths of a light transmitted along the light guide, a light detector enabled to detect respective intensities of the plurality of wavelengths of the light not absorbed by the first and second light absorbers, and a processor enabled to calculate a bend state of the light guide according to the detected intensities of the plurality of wavelengths of the light.

    Bend information computation apparatus and endoscope system

    公开(公告)号:US11478305B2

    公开(公告)日:2022-10-25

    申请号:US16149206

    申请日:2018-10-02

    Inventor: Ken Sato

    Abstract: A bend information computation apparatus includes a generation unit and a bend information arithmetic operator. The generation unit generates suppression information that suppresses first information representing a variation in spectrum not derived from a bend of a detection target provided in a light guide on the basis of light source spectrum information. The bend information arithmetic operator operates second information representing a variation in spectrum derived from the bend on the basis of a spectrum of light guided by the light guide, operates third information representing a variation in spectrum derived only from the bend on the basis of the second information and the suppression information, and operates bend information on the basis of the third information.

    Bend information computation apparatus

    公开(公告)号:US10197386B2

    公开(公告)日:2019-02-05

    申请号:US15991022

    申请日:2018-05-29

    Inventor: Ken Sato

    Abstract: A bend information computation apparatus includes a light source, a first light guide, a detection target, a second light guide, a switching member, a driver, a detector, a generator, and a bend information arithmetic operator. The detector is configured to detect first and second spectrum change. The generator is configured to calculate, based on the second spectrum change, suppression information. The bend information arithmetic operator is configured to calculate change information based on the first spectrum change and the suppression information and to compute bend information based on the change information.

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