Patents by Inventor Ryo Kawasaki

Ryo Kawasaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12289527
    Abstract: An image capturing apparatus comprises: an image capturing unit including an imaging optical system and an image sensor; a rotation driving unit configured to drive the image capturing unit in a pan direction and/or tilt direction; a shift driving unit configured to drive at least one of the imaging optical system and the image sensor within a plane parallel to an imaging plane; and a synchronous control unit configured to synchronize a rotation driving of the image capturing unit and a shift driving of at least one of the imaging optical system and the image sensor so as not to change an imaging range of the image capturing unit during performing a correction on distortion of an object in a captured image captured by the image capturing unit.
    Type: Grant
    Filed: March 9, 2023
    Date of Patent: April 29, 2025
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Natsuko Sato, Ryo Kawasaki
  • Patent number: 12272459
    Abstract: A medical diagnostic apparatus includes a receiver circuit that receives three-dimensional data of a subject's eye, and a processor configured to separate portions of the three-dimensional data into separate segments, perform processing differently on each of the separate segments, and combine the separately processed segments to produce a segmented three-dimensional data set. The processor is further configured to generate at least one diagnostic metric from the segmented three-dimensional data set, and the processor is further configured to evaluate a pathological condition based on the at least one diagnostic metric. Related methods and computer readable media are also disclosed.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: April 8, 2025
    Assignees: Topcon Corporation, Osaka University
    Inventors: Kohji Nishida, Atsuya Miki, Kazuichi Maruyama, Ryo Kawasaki, Song Mei, Zaixing Mao, Zhenguo Wang, Kinpui Chan, Xin Sui
  • Publication number: 20240305897
    Abstract: An imaging apparatus includes at least one processor, and a memory coupled to the at least one processor. The memory stores instructions that, when executed by the at least one processor, cause the at least one processor to acquire a parameter related to a brightness of a subject; determine whether to insert a first filter configured to attenuate infrared light into a light path of an imaging optical system, based on whether the acquired parameter satisfies a predetermined condition; and correct the predetermined condition based on whether a second filter different from the first filter and configured to attenuate light is inserted into the light path of the imaging optical system.
    Type: Application
    Filed: February 29, 2024
    Publication date: September 12, 2024
    Inventor: RYO KAWASAKI
  • Patent number: 12047681
    Abstract: An image pickup apparatus includes a tilt driving unit configured to change a tilt so as to change an angle between an image pickup plane of an image sensor and a principal plane of an image pickup optical system, a focus driving unit configured to drive a focus lens, and at least one processor that functions as an area setting unit configured to set a plurality of areas in a captured image, a defocus information detection unit configured to detect defocus information for each of the plurality of areas, and a control unit configured to select one control mode from a plurality of control modes based on the defocus information on each of the plurality of areas, the plurality of control modes being used for performing focusing control using at least one of the tilt driving unit and the focus driving unit.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: July 23, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryo Kawasaki, Natsuko Sato
  • Patent number: 12003854
    Abstract: An imaging device includes a focus driving unit for driving a focus lens; a tilting driving unit for tilting at least one of an image sensor and an imaging optical system; a detection unit for detecting a subject in an image; a setting unit for setting a plurality of focus regions in the image based on positional information of the subject detected in the image; a determination unit for determining respective driving amounts for the focus driving unit and for the tilting driving unit based on the positional information and focal information of the plurality of focus regions so that the plurality of focus regions is in focus; and a control unit for controlling the focus driving unit and the tilting driving unit based on the determined respective driving amounts.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: June 4, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Natsuko Sato, Ryo Kawasaki
  • Publication number: 20240147064
    Abstract: An imaging apparatus controls a focus position of an optical system by switching between a first mode where the focus position is moved alternately to first and second positions to determine an in-focus direction and a second mode where the focus position is moved in the in-focus direction. The apparatus includes an imaging unit that captures an image formed by the optical system, a detection unit that detects a vibration amount of the apparatus, a determination unit that determines, based on the vibration amount, a correction amount for reducing blurring, a correction unit that corrects the blurring by clipping a part of the image based on the correction amount, and a control unit that controls switching to the second mode if the in-focus direction is the same a predetermined number of times or more in succession. The predetermined number is changed based on the correction amount or the vibration amount.
    Type: Application
    Filed: October 24, 2023
    Publication date: May 2, 2024
    Inventors: TOSHIYUKI DOBASHI, RYO KAWASAKI, NAOKI MARUYAMA
  • Publication number: 20240080575
    Abstract: An image capturing apparatus includes an image sensor that captures an image of an object formed by an imaging optical system, at least one processor, and a memory coupled to the at least one processor. The memory stores instructions that, when executed by the at least one processor, cause the at least one processor to execute noise reduction processing on a first image captured by the image sensor based on a plurality of second images, acquire an evaluation value indicating contrast of the first image on which the noise reduction processing has been executed, and control movement of a focus position of the imaging optical system based on the evaluation value. The movement is controlled so that the movement is stopped for a time period having a length corresponding to an intensity of the noise reduction processing in a case where a predetermined condition is satisfied.
    Type: Application
    Filed: August 30, 2023
    Publication date: March 7, 2024
    Inventors: RYO KAWASAKI, NAOKI MARUYAMA
  • Publication number: 20230306568
    Abstract: A medical diagnostic apparatus includes a receiver circuit that receives three-dimensional volumetric data of a subject’s eye, and a processor configured to separate portions of the three-dimensional volumetric data into separate segments, perform processing differently on each of the separate segments, and combine the separately processed segments to produce an enhanced three-dimensional volumetric data set. The processor is further configured to generate at least one diagnostic metric from the enhanced three-dimensional volumetric data set, and the processor is further configured to evaluate a pathological condition based on the at least one diagnostic metric. Related methods and computer readable media are also disclosed.
    Type: Application
    Filed: June 22, 2021
    Publication date: September 28, 2023
    Applicants: Osaka University, Topcon Corporation
    Inventors: Kohji NISHIDA, Kazuichi MARUYAMA, Atsuya MIKI, Ryo KAWASAKI, Hirokazu SAKAGUCHI, Chikako HARA, Song MEI, Yasufumi FUKUMA, Zaixing MAO, Zhenguo WANG, Kinpui CHAN
  • Patent number: 11750939
    Abstract: In order to provide a tilt control device capable of performing tilt control optimal at a high speed by controlling both a focus position and a tilt angle even when a scene changes such as in a case in which a subject changes, there is provided an imaging apparatus including a tilt control unit that performs tilt control by driving at least one of an imaging device and an imaging optical system, a focus lens driving unit that drives a focus lens, and a control unit that has a plurality of control modes for performing focus correction using at least one of the tilt control unit and the focus lens driving unit and selects one of the plurality of control modes in accordance with the number of subject areas displayed on an image screen.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: September 5, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shunsuke Chino, Ryo Kawasaki, Natsuko Sato, Naoki Maruyama
  • Patent number: 11722775
    Abstract: An image pickup apparatus includes an image sensor configured to capture an optical image formed by an image pickup optical system, and a controlling unit configured to, in tilt imaging that changes a tilt angle, set a focal plane to any position such that an angle between the focal plane and the optical axis is changed, by controlling at least one of a position of a focus lens in the image pickup optical system and the tilt angle. The controlling unit controls the at least one so as not to set the focal plane to a first position corresponding to a position of a first target object that is an imaging target, but to set the focal plane to a second position that is different from the first position and at which the position of the first target object is included in a depth of field.
    Type: Grant
    Filed: August 3, 2022
    Date of Patent: August 8, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Natsuko Sato, Shunsuke Chino, Ryo Kawasaki
  • Patent number: 11722769
    Abstract: An image pickup apparatus includes an object detecting unit detecting at least one object in an image, a focus detecting unit that provides a focus detection of the object, a determination unit that determines the tilt angle and the focus position based on a focus detecting result by the focus detecting unit, and a control unit that controls the tilt driving unit and the focus driving unit based on the determined tilt angle and focus position. The control unit selects an object from among a plurality of objects, which is to be used to determine the tilt angle and the focus position, based on at least one of a detected size and a detected position of the object, and accuracy of the focus detecting result. The determination unit determines the tilt angle and the focus position based on a focus detecting result of a selected object.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: August 8, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroaki Kimura, Natsuko Sato, Ryo Kawasaki
  • Patent number: 11678072
    Abstract: A control apparatus includes a tilt driving unit configured to perform tilt driving, a focus driving unit, a control unit configured to control the focus driving unit and the tilt driving unit for focusing on at least a first area and a second area in a plurality of areas in an image, and a first determination unit configured to determine a control method of the control unit based on whether or not a difference between a position of at least one of the first area and the second area and a position corresponding to a tilt axis in the image is smaller than a predetermined threshold.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: June 13, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Natsuko Sato, Ryo Kawasaki
  • Publication number: 20230105247
    Abstract: A medical diagnostic apparatus includes a receiver circuit that receives three-dimensional data of a subject's eye, and a processor configured to separate portions of the three-dimensional data into separate segments, perform processing differently on each of the separate segments, and combine the separately processed segments to produce a segmented three-dimensional data set. The processor is further configured to generate at least one diagnostic metric from the segmented three-dimensional data set, and the processor is further configured to evaluate a pathological condition based on the at least one diagnostic metric. Related methods and computer readable media are also disclosed.
    Type: Application
    Filed: October 5, 2021
    Publication date: April 6, 2023
    Applicants: Topcon Corporation, Osaka University
    Inventors: Kohji NISHIDA, Atsuya MIKI, Kazuichi MARUYAMA, Ryo KAWASAKI, Song MEI, Zaixing MAO, Zhenguo WANG, Kinpui CHAN, Xin SUI
  • Publication number: 20230055269
    Abstract: An image pickup apparatus includes an image sensor configured to capture an optical image formed by an image pickup optical system, and a controlling unit configured to, in tilt imaging that changes a tilt angle, set a focal plane to any position such that an angle between the focal plane and the optical axis is changed, by controlling at least one of a position of a focus lens in the image pickup optical system and the tilt angle. The controlling unit controls the at least one so as not to set the focal plane to a first position corresponding to a position of a first target object that is an imaging target, but to set the focal plane to a second position that is different from the first position and at which the position of the first target object is included in a depth of field.
    Type: Application
    Filed: August 3, 2022
    Publication date: February 23, 2023
    Inventors: Natsuko Sato, Shunsuke Chino, Ryo Kawasaki
  • Patent number: 11582394
    Abstract: A control apparatus includes a tilt driving unit configured to tilt at least one of an image sensor and an imaging optical system relative to a plane orthogonal to an optical axis, a focus driving unit configured to perform focus driving by moving a focus lens that constitutes at least part of the imaging optical system in an optical axis direction, and a controlling unit configured to control the focus driving unit and the tilt driving unit so as to adjust a focal plane to a predetermined surface. The controlling unit moves the focal plane in a vertical direction to the focal plane while maintaining the focal plane substantially parallel to the predetermined plane.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: February 14, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Natsuko Sato, Ryo Kawasaki, Shunsuke Chino
  • Patent number: 11490020
    Abstract: There is provided with an information processing apparatus. A control unit performs tilt control for tilting an image capturing element with respect to a plane perpendicular to an optical axis of an image capturing optical system about a rotation axis, and perform focus control for moving a focus lens in a direction of the optical axis. A setting unit sets a target region in a captured image obtained by an image capturing unit. A determining unit determines, based on a position corresponding to a position of the rotation axis in the image and a position of the target region in the image, a correction amount of a position of the focus lens, wherein the focus lens is moved based on the correction amount.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: November 1, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryo Kawasaki, Natsuko Sato
  • Publication number: 20220345635
    Abstract: A control apparatus includes a tilt driving unit configured to perform tilt driving, a focus driving unit, a control unit configured to control the focus driving unit and the tilt driving unit for focusing on at least a first area and a second area in a plurality of areas in an image, and a first determination unit configured to determine a control method of the control unit based on whether or not a difference between a position of at least one of the first area and the second area and a position corresponding to a tilt axis in the image is smaller than a predetermined threshold.
    Type: Application
    Filed: April 18, 2022
    Publication date: October 27, 2022
    Inventors: Natsuko Sato, Ryo Kawasaki
  • Publication number: 20220345633
    Abstract: An image pickup apparatus includes a tilt driving unit configured to change a tilt so as to change an angle between an image pickup plane of an image sensor and a principal plane of an image pickup optical system, a focus driving unit configured to drive a focus lens, and at least one processor that functions as an area setting unit configured to set a plurality of areas in a captured image, a defocus information detection unit configured to detect defocus information for each of the plurality of areas, and a control unit configured to select one control mode from a plurality of control modes based on the defocus information on each of the plurality of areas, the plurality of control modes being used for performing focusing control using at least one of the tilt driving unit and the focus driving unit.
    Type: Application
    Filed: April 18, 2022
    Publication date: October 27, 2022
    Inventors: Ryo Kawasaki, Natsuko Sato
  • Publication number: 20220321790
    Abstract: In order to provide a tilt control device capable of performing tilt control optimal at a high speed by controlling both a focus position and a tilt angle even when a scene changes such as in a case in which a subject changes, there is provided an imaging apparatus including a tilt control unit that performs tilt control by driving at least one of an imaging device and an imaging optical system, a focus lens driving unit that drives a focus lens, and a control unit that has a plurality of control modes for performing focus correction using at least one of the tilt control unit and the focus lens driving unit and selects one of the plurality of control modes in accordance with the number of subject areas displayed on an image screen.
    Type: Application
    Filed: June 6, 2022
    Publication date: October 6, 2022
    Inventors: Shunsuke Chino, Ryo Kawasaki, Natsuko Sato, Naoki Maruyama
  • Publication number: 20220303474
    Abstract: An image pickup apparatus includes an object detecting unit detecting at least one object in an image, a focus detecting unit that provides a focus detection of the object, a determination unit that determines the tilt angle and the focus position based on a focus detecting result by the focus detecting unit, and a control unit that controls the tilt driving unit and the focus driving unit based on the determined tilt angle and focus position. The control unit selects an object from among a plurality of objects, which is to be used to determine the tilt angle and the focus position, based on at least one of a detected size and a detected position of the object, and accuracy of the focus detecting result. The determination unit determines the tilt angle and the focus position based on a focus detecting result of a selected object.
    Type: Application
    Filed: March 9, 2022
    Publication date: September 22, 2022
    Inventors: Hiroaki Kimura, Natsuko Sato, Ryo Kawasaki