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公开(公告)号：US20200242806A1
公开(公告)日：2020-07-30
申请号：US16852683
申请日：2020-04-20
Applicant: OLYMPUS CORPORATION
Inventor： Junichi MORI
IPC: G06T7/80 , H04N13/246
Abstract: A stereo camera calibration method includes: obtaining a stereo image generated by imaging a chart using a stereo camera, the chart at least including two markers arranged at a known interval; measuring the known interval, using the stereo image and a calibration parameter for the stereo camera; and correcting a parameter pertaining to an optical axis position so as to reduce a difference between the known interval and a result of the measurement. The correcting includes performing a process corresponding to moving the optical axis position in perpendicular and lateral directions on an imaging surface of the stereo camera. The correcting includes calculating a perpendicular correction amount of the optical axis position, and then calculating a lateral correction amount of the optical axis position.
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公开(公告)号：US20210056695A1
公开(公告)日：2021-02-25
申请号：US17093800
申请日：2020-11-10
Applicant: OLYMPUS CORPORATION
Inventor： Junichi MORI
Abstract: A landmark estimating method estimates a position of a landmark that is a hole existing in an object and is a site through which an insertion portion penetrates, in an endoscope image obtained by picking up an image of the object by an endoscope with the insertion portion bent. The landmark estimating method includes estimating an axis of the insertion portion, estimating a boundary of the insertion portion and the object, and estimating the position of the landmark based on the axis and the boundary that are estimated.
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公开(公告)号：US20190080466A1
公开(公告)日：2019-03-14
申请号：US16185109
申请日：2018-11-09
Applicant: OLYMPUS CORPORATION
Inventor： Junichi MORI
Abstract: An image processing apparatus includes at least one circuit. The at least one circuit acquires a plurality of images, including at least a first image and a second image obtained by photographing a subject from different viewpoints, acquires an instruction from a user, sets on the first image a measurement point for which three-dimensional coordinates of the subject are required, based on the instruction, calculates a correspondence point which is on the second image and which corresponds to the measurement point, by matching, calculates a reliability of the matching between the measurement point and the correspondence point as a measurement point reliability, and sets on the first image an alternative measurement point enabling a reliability higher than that of the measurement point reliability, instead of the measurement point, if the measurement point reliability is less than a predetermined threshold value.
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公开(公告)号：US20180197306A1
公开(公告)日：2018-07-12
申请号：US15860721
申请日：2018-01-03
Applicant: OLYMPUS CORPORATION
Inventor： Munenori FUKUNISHI , Hideaki TAKAHASHI , Junichi MORI , Naoyuki MIYASHITA , Kiyotomi OGAWA , Yohei SAKAMOTO
CPC classification number: G06T7/593 , G02B23/2415 , G02B23/2484 , G06T7/246 , G06T7/74 , G06T2207/10021 , G06T2207/10068 , H04N5/2254 , H04N5/2258 , H04N5/23267 , H04N5/23293 , H04N13/211 , H04N13/225 , H04N2005/2255 , H04N2013/0081
Abstract: In a measuring device, a second objective optical system is arranged to have a parallax with respect to a first objective optical system. An imaging unit captures a first subject image formed through the first objective optical system at a first imaging timing and captures a second subject image formed through the second objective optical system at a second imaging timing different from the first imaging timing. A virtual image generating unit generates a virtual image based on the first subject image acquired in a case in which the imaging unit is assumed to capture the first subject image at the second imaging timing. A measurement processing unit measures a shape of a subject on the basis of a second image based on the second subject image and the virtual image.
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