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公开(公告)号：US20220346636A1
公开(公告)日：2022-11-03
申请号：US17865653
申请日：2022-07-15
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro YOSHINO
Abstract: A focus control device includes a processor. The processor analyzes detection results of a target object in time sequence to determine whether the target object is in a lost state in which the target object is not temporarily captured into an image, sets a focus drive mode to an autofocus mode when the target object is detected, sets a first positional mode in which the focus lens is arranged at a position that is within a set range of an in-focus object plane position and is on the far point side of a central position when the target object is not detected and is not in the lost state, and sets the focus drive mode such that a lens position is nearer to a near point than in the first positional mode or sets the focus drive mode to the autofocus mode in a when the lost state is determined.
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2.发明申请公开(公告)号：US20180316870A1
公开(公告)日：2018-11-01
申请号：US16030165
申请日：2018-07-09
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro YOSHINO
IPC: H04N5/232
Abstract: A focus control device includes a region setting section 2010 that sets a plurality of regions, each including a plurality of pixels, to an image acquired by an imaging section 200, an AF evaluation value calculation section 2020 that calculates an AF evaluation value of each of the plurality of regions, an invalid region setting section (invalid block setting section 2050) that sets an invalid region (low contrast determination invalid block) in the plurality of regions, a low contrast state determination section 2075 that determines whether or not the target subject is in a low contrast state based on the AF evaluation value of a region, in the plurality of regions, other than the invalid region, and a focus control section 2000 that controls an in-focus object plane position based on the AF evaluation value. The focus control section 2000 is configured to implement the focus control varying depending on a determination result obtained by the low contrast state determination section 2075.
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公开(公告)号：US20180249092A1
公开(公告)日：2018-08-30
申请号：US15963263
申请日：2018-04-26
Applicant: OLYMPUS CORPORATION
Inventor： Naoya KURIYAMA , Koichiro YOSHINO , Satoshi TAKEKOSHI
CPC classification number: H04N5/2628 , A61B1/00009 , A61B1/00039 , A61B1/00105 , A61B1/00126 , A61B1/00188 , A61B1/055 , A61B1/313 , H04N5/23212 , H04N5/232123 , H04N5/23245 , H04N5/23293 , H04N5/232945 , H04N2005/2255
Abstract: An imaging device includes a processor. The processor, in a manual focus mode, sets a focus evaluation area to have a larger size than the focus evaluation area set in an auto focus mode, generates assist information assisting adjustment of the in-focus object plane position based on a focus evaluation value obtained from an image of the focus evaluation area, and outputting the assist information to a display section.
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公开(公告)号：US20150334289A1
公开(公告)日：2015-11-19
申请号：US14810836
申请日：2015-07-28
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro YOSHINO
CPC classification number: H04N5/23212 , A61B1/00009 , A61B1/00188 , A61B1/045 , G02B7/38 , G02B23/2407 , G03B13/36 , H04N2005/2255
Abstract: An imaging device includes an optical system, an image sensor, a lens position control section, and a focus control section, the focus control section including a block setting section, a contrast value calculation section that calculates block contrast value information, a contrast value storage section that stores the block contrast value information about a reference image, a feature quantity calculation section, an effective block determination section that acquires effective block information, an effective block information storage section that stores the effective block information about the reference image, an AF area setting section that sets an AF area from the effective block information about the reference image and the effective block information about the input image, and a contrast value determination section that determines an image contrast value from the AF area.
Abstract translation: 成像装置包括光学系统，图像传感器，透镜位置控制部分和聚焦控制部分，焦点控制部分包括块设置部分，计算块对比度值信息的对比度值计算部分，对比度值存储 存储关于参考图像的块对比度值信息的部分，特征量计算部，获取有效块信息的有效块确定部，存储关于参考图像的有效块信息的有效块信息存储部，AF区 设置部分，根据关于参考图像的有效块信息和关于输入图像的有效块信息设置AF区域;以及对比度确定部，其从AF区域确定图像对比度值。
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公开(公告)号：US20210243376A1
公开(公告)日：2021-08-05
申请号：US17237432
申请日：2021-04-22
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro YOSHINO
Abstract: An imaging device includes an objective optical system that includes a focus lens, an optical path splitter that splits an object image into a first optical image and a second optical image different from each other in in-focus object plane position, an image sensor that captures the first optical image to acquire a first image and the second optical image to acquire a second image, and a processor including hardware. The processor performs a combining process of generating a single combined image based on the first image and the second image, and an Auto Focus (AF) control. The processor operates in the AF control mode including a first AF control mode of performing the AF control by using a first AF evaluation value calculated from the first image and a second AF evaluation value calculated from the second image.
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Patent Agency Ranking
公开(公告)号：US20180242828A1
公开(公告)日：2018-08-30
申请号：US15964383
申请日：2018-04-27
Applicant: OLYMPUS CORPORATION
Inventor： Yuichi SHIGA , Toshiaki MIKAMI , Koichiro YOSHINO , Satoshi TAKEKOSHI
CPC classification number: A61B1/045 , A61B1/00006 , A61B1/00009 , A61B1/00045 , A61B1/00059 , A61B1/00105 , A61B1/00117 , A61B1/00126 , A61B1/00188 , A61B1/042 , A61B1/055 , H04N5/23212 , H04N5/232123 , H04N5/23245 , H04N5/23296 , H04N5/2351 , H04N9/045 , H04N9/735 , H04N2005/2255
Abstract: An endoscope apparatus includes an optical system including a focus lens, a connector to which an interchangeable optical system is connected, an image sensor configured to output a captured image based on the optical system and the interchangeable optical system, and a processor including hardware. The processor performs a determination process of determining whether the interchangeable optical system is a known or unknown optical system, implements a first step amount determination process when the interchangeable optical system is determined to be a known optical system, and implements a second step amount determination process when the interchangeable optical system is determined to be an unknown optical system and controls the focus lens based on step amount information determined.
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7.发明申请公开(公告)号：US20170265725A1
公开(公告)日：2017-09-21
申请号：US15613085
申请日：2017-06-02
Applicant: OLYMPUS CORPORATION
Inventor： Manabu ICHIKAWA , Toshiaki MIKAMI , Koichiro YOSHINO
CPC classification number: A61B1/00188 , A61B1/00006 , A61B1/00009 , A61B1/045 , A61B1/3132 , G02B7/34 , G02B23/2469 , G02B23/26 , H04N5/2256 , H04N5/23212 , H04N5/23245 , H04N5/3696 , H04N2005/2255
Abstract: A focus control device includes: a processor including hardware, the processor being configured to implement: an area setting process that sets a plurality of areas to a captured image that has been captured by an imaging section, each of the plurality of areas including a plurality of pixels; an object distance information calculation process that calculates distance information about a distance to an object that is captured within each of the plurality of areas; and a focus control process based on the distance information, wherein the processor implements the focus control process that performs a classification process that classifies the plurality of areas into a plurality of groups, and performs the focus control process based on area information about each of the plurality of groups.
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公开(公告)号：US20150112128A1
公开(公告)日：2015-04-23
申请号：US14058655
申请日：2013-10-21
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro YOSHINO
CPC classification number: A61B1/00188 , A61B1/00009 , A61B1/043 , A61B1/0638
Abstract: An endoscope system includes an in-focus object plane position switch section that switches an in-focus object plane position of an imaging section, a target in-focus position determination section that calculates an in-focus evaluation value, and determines a target in-focus position based on the in-focus evaluation value, and a change-in-scene detection section that detects whether or not a change in scene has occurred based on a captured image. The target in-focus position determination section determines whether or not the in-focus evaluation value satisfies a determination criterion until the change-in-scene detection section detects that the change in scene has occurred, and selects the first in-focus object plane position or the second in-focus object plane position that is not currently selected by the in-focus object plane position switch section when it has been determined that the in-focus evaluation value does not satisfy the determination criterion.
Abstract translation: 一种内窥镜系统，具备切换摄像部的对焦物平面位置的对焦物平面位置切换部，计算对焦评价值的目标对焦位置决定部， 基于对焦评价值的焦点位置，以及基于拍摄图像来检测场景变化是否发生的场景变化部。 目标对焦位置确定部分确定在场景检测部分检测到场景变化已经发生之前，焦点内评估值是否满足确定标准，并且选择第一对焦对象平面位置 或者当已经确定焦点内评估值不满足确定标准时，当前由对焦对象平面位置切换部分当前未选择的第二对焦物平面位置。
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公开(公告)号：US20210239963A1
公开(公告)日：2021-08-05
申请号：US17237481
申请日：2021-04-22
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro YOSHINO
Abstract: An imaging device includes an objective optical system, an optical path splitter splitting an object image into a first and a second optical image different from each other in an in-focus object plane position, an image sensor capturing the first and second optical image to acquire a first and a second image. The processor performs a combining process of selecting an image with a relatively high contrast in predetermined corresponding areas between the first and second image to generate a single combined image. The processor controls the position of a focus lens to be a position determined to form the object image of the target object at a position between a first position corresponding to the image sensor for acquiring the first image and a second position corresponding to the image sensor for acquiring the second image, based on the first and second image before the combining process.
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公开(公告)号：US20200229688A1
公开(公告)日：2020-07-23
申请号：US16843013
申请日：2020-04-08
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro YOSHINO , Naoya KURIYAMA
Abstract: An endoscope apparatus includes a processor. The processor performs controlling a focus position of an objective optical system, acquiring images sequentially captured by an image sensor, and combining the images in N frames thus captured into a depth of field extended image in one frame. The processor controls the focus position such that focus positions at timings when the respective images in N frames are captured differ from each other. The processor combines the images in N frames that have been controlled to receive a constant quantity of light emission of illumination light or the images in N frames that have undergone a correction process to make image brightness constant, into the depth of field extended image.
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