Imaging apparatus and focus adjustment method

    公开(公告)号:US10302901B2

    公开(公告)日:2019-05-28

    申请号:US15793944

    申请日:2017-10-25

    Inventor: Koh Mohri

    Abstract: In a focus adjustment method for an imaging apparatus, that, in order to focus on a single or a plurality of point light sources, acquires plurality of image data while moving a focus lens in an optical axis direction and carries out focus adjustment based on the image data, brightness values of pixels within a given evaluation region are detected based on the image data, high brightness evaluation values are calculated based on the brightness values, symmetry of the high brightness evaluation values are calculated for movement of the focus lens, and focus adjustment is carried out based on an extreme value calculated based on the symmetry.

    IMAGING APPARATUS AND FOCUS ADJUSTMENT METHOD

    公开(公告)号:US20180120534A1

    公开(公告)日:2018-05-03

    申请号:US15793944

    申请日:2017-10-25

    Inventor: Koh Mohri

    Abstract: In a focus adjustment method for an imaging apparatus, that, in order to focus on a single or a plurality of point light sources, acquires plurality of image data while moving a focus lens in an optical axis direction and carries out focus adjustment based on the image data, brightness values of pixels within a given evaluation region are detected based on the image data, high brightness evaluation values are calculated based on the brightness values, symmetry of the high brightness evaluation values are calculated for movement of the focus lens, and focus adjustment is carried out based on an extreme value calculated based on the symmetry.

Patent Agency Ranking