Patents by Inventor Makoto Oigawa

Makoto Oigawa 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).

  • Publication number: 20240144507
    Abstract: An information processing apparatus includes one or more memories storing instructions, and one or more processors executing the instructions to acquire a captured image and a distance image, detect an object from the captured image, acquire first distance information indicating a distance to the detected object, acquire a grounding position of the detected object based on the captured image and acquire second distance information indicating a distance to the detected object based on the first distance information and the acquired grounding position.
    Type: Application
    Filed: January 11, 2024
    Publication date: May 2, 2024
    Inventors: Kazuya Nobayashi, Shin Tanaka, Makoto Oigawa, Shigeo Kodama, Tomoyuki Kawamoto
  • Publication number: 20240147087
    Abstract: An information processing apparatus acquires a first parallax image and a second parallax image, which are parallax images that are a group of images having parallax with each other and captured by an imaging unit with different exposure conditions, acquires reliability, which is an accuracy of a parallax amount of the parallax images, for the first parallax image and the second parallax image, and selects the parallax images for generating information about a distance from a plurality of the parallax images including the first parallax image and the second parallax image, based on the reliability.
    Type: Application
    Filed: October 19, 2023
    Publication date: May 2, 2024
    Inventors: Makoto OIGAWA, Kazuya NOBAYASHI
  • Patent number: 11908148
    Abstract: An electronic device includes at least one processor or circuit configured to function as a setting unit, an acquisition unit and a processing unit. The setting unit sets an object region in an image acquired from an imaging unit. The acquisition unit acquires a distance map including distance information corresponding to a pixel included in the object region. The processing unit determines object distance information indicating a distance to an object included in the object region, based on the distance information corresponding to the pixel included in the object region.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: February 20, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazuya Nobayashi, Shin Tanaka, Makoto Oigawa, Shigeo Kodama, Tomoyuki Kawamoto
  • Patent number: 11827148
    Abstract: A display control device acquires sight line information about a direction of a visual field of a driver of a moving body, viewpoint information about a start point of the visual field of the driver, and map information around the moving body. The display control device acquires a blind spot region of the driver on the basis of the acquired sight line information, viewpoint information, and surroundings information. In addition, the display control device performs control of generating display information on the basis of the surroundings information about the blind spot region and displaying the display information on a display device.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: November 28, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventor: Makoto Oigawa
  • Publication number: 20230286548
    Abstract: An electronic instrument includes a first distance information acquisition unit acquiring first distance information corresponding to an object included in an image signal, at least one of a second distance information acquisition unit acquiring second distance information on the basis of at least one of information of an end position of the object included in the image signal and a third distance information acquisition unit configured to acquire third distance information based on information of a size of the object included in the image signal, and a distance information integration unit generating integrated distance information by combining and integrating at least two of the first distance information, the second distance information, and the third distance information.
    Type: Application
    Filed: March 1, 2023
    Publication date: September 14, 2023
    Inventors: SHIN TANAKA, KAZUYA NOBAYASHI, MAKOTO OIGAWA, SHIGEO KODAMA, TOMOYUKI KAWAMOTO
  • Publication number: 20230274444
    Abstract: A measuring device including: a stereo image acquiring unit configured to acquire a first image of a first viewpoint and a second image of a second viewpoint at a predetermined first time and acquire a third image of the first viewpoint and a fourth image of the second viewpoint at a second time different from the first time; a stereo distance measuring unit configured to acquire a first distance image from the first image and the second image and acquire a second distance image from the third image and the fourth image; and a movement amount calculating unit configured to calculate a relative movement amount between the stereo image acquiring unit and a subject between the first time and the second time on the basis of the first distance image and the second distance image.
    Type: Application
    Filed: February 8, 2023
    Publication date: August 31, 2023
    Inventor: Makoto Oigawa
  • Publication number: 20220314886
    Abstract: A display control device acquires sight line information about a direction of a visual field of a driver of a moving body, viewpoint information about a start point of the visual field of the driver, and map information around the moving body. The display control device acquires a blind spot region of the driver on the basis of the acquired sight line information, viewpoint information, and surroundings information. In addition, the display control device performs control of generating display information on the basis of the surroundings information about the blind spot region and displaying the display information on a display device.
    Type: Application
    Filed: April 4, 2022
    Publication date: October 6, 2022
    Inventor: Makoto Oigawa
  • Publication number: 20220321871
    Abstract: In order to realize a device that can reduce the influence of errors, the device includes a first acquisition unit configured to acquire first information including an error via an image formation optical system, a second acquisition unit configured to acquire second information of which the error is less than that of the first information, a correction information generation unit configured to calculate a correction value for correcting the error of the first information on the basis of the second information, and a correction unit configured to correct the first information by using the correction value.
    Type: Application
    Filed: March 25, 2022
    Publication date: October 6, 2022
    Inventors: Makoto Oigawa, Shin Tanaka
  • Publication number: 20220309694
    Abstract: An electronic device includes at least one processor or circuit configured to function as a setting unit, an acquisition unit and a processing unit. The setting unit sets an object region in an image acquired from an imaging unit. The acquisition unit acquires a distance map including distance information corresponding to a pixel included in the object region. The processing unit determines object distance information indicating a distance to an object included in the object region, based on the distance information corresponding to the pixel included in the object region.
    Type: Application
    Filed: March 21, 2022
    Publication date: September 29, 2022
    Inventors: Kazuya Nobayashi, Shin Tanaka, Makoto Oigawa, Shigeo Kodama, Tomoyuki Kawamoto
  • Patent number: 11037316
    Abstract: An apparatus comprises: an acquisition unit that captures an image of a measurement target and acquires an original image pair having a parallax; a reduction unit that reduces a size of the original image pair; and a calculator that calculates, from an image pair obtained by the reduction unit, a parallax map using predetermined search ranges and search windows in the respective regions. In order to obtain a parallax map that has a predetermined number of pieces of data, the calculator calculates parallax maps in a plurality of hierarchies in which a hierarchy where a parallax map is calculated using an image pair with a lowest magnification is set as a lowest hierarchy, and the predetermined search ranges for calculating the parallax maps in the respective hierarchies are determined based on a parallax map in an immediately lower hierarchy.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: June 15, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Makoto Oigawa
  • Patent number: 10664984
    Abstract: A distance measuring apparatus includes: an image pickup element in which a plurality of pixels receives light of an image are two-dimensionally arrayed; and an acquiring unit acquires information relating to a distance to an object based on an output signal of the image pickup element which each pixel line is constituted by pixels which receive beams passing through a same pupil region of the imaging optical system, and wherein the acquiring unit (1) acquires a first image displacement amount from output signals of at least two pixel lines which receive beams passing through a same pupil region, (2) acquires a second image displacement amount from output signals of at least two pixel lines which receive beams passing through different pupil regions, and (3) acquires the information relating to the distance to the object based on the first image displacement amount and the second image displacement amount.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: May 26, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Makoto Oigawa
  • Patent number: 10466048
    Abstract: A distance measuring apparatus includes: an acquisition unit that acquires a first image at a first viewpoint where an object is irradiated with a first light including a pattern, a second image at a second viewpoint different from the first viewpoint where the object is irradiated with the first light, a third image at the first viewpoint where the object is irradiated with a second light not including a pattern, and a fourth image at the second viewpoint where the object is irradiated with the second light; and a control unit that acquires information corresponding to a distance, by employing a fifth image obtained based on a ratio the first image and the third image and a sixth image obtained based on a ratio of the second image and the fourth image.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: November 5, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Makoto Oigawa
  • Publication number: 20190304119
    Abstract: An apparatus comprises: an acquisition unit that captures an image of a measurement target and acquires an original image pair having a parallax; a reduction unit that reduces a size of the original image pair; and a calculator that calculates, from an image pair obtained by the reduction unit, a parallax map using predetermined search ranges and search windows in the respective regions. In order to obtain a parallax map that has a predetermined number of pieces of data, the calculator calculates parallax maps in a plurality of hierarchies in which a hierarchy where a parallax map is calculated using an image pair with a lowest magnification is set as a lowest hierarchy, and the predetermined search ranges for calculating the parallax maps in the respective hierarchies are determined based on a parallax map in an immediately lower hierarchy.
    Type: Application
    Filed: March 26, 2019
    Publication date: October 3, 2019
    Inventor: Makoto Oigawa
  • Publication number: 20190108649
    Abstract: A distance measuring apparatus includes: an image pickup element in which a plurality of pixels receives light of an image are two-dimensionally arrayed; and an acquiring unit acquires information relating to a distance to an object based on an output signal of the image pickup element which each pixel line is constituted by pixels which receive beams passing through a same pupil region of the imaging optical system, and wherein the acquiring unit (1) acquires a first image displacement amount from output signals of at least two pixel lines which receive beams passing through a same pupil region, (2) acquires a second image displacement amount from output signals of at least two pixel lines which receive beams passing through different pupil regions, and (3) acquires the information relating to the distance to the object based on the first image displacement amount and the second image displacement amount.
    Type: Application
    Filed: October 5, 2018
    Publication date: April 11, 2019
    Inventor: Makoto Oigawa
  • Publication number: 20180347979
    Abstract: A distance measuring apparatus includes: an acquisition unit that acquires a first image at a first viewpoint where an object is irradiated with a first light including a pattern, a second image at a second viewpoint different from the first viewpoint where the object is irradiated with the first light, a third image at the first viewpoint where the object is irradiated with a second light not including a pattern, and a fourth image at the second viewpoint where the object is irradiated with the second light; and a control unit that acquires information corresponding to a distance, by employing a fifth image obtained based on a ratio the first image and the third image and a sixth image obtained based on a ratio of the second image and the fourth image.
    Type: Application
    Filed: May 25, 2018
    Publication date: December 6, 2018
    Inventor: Makoto Oigawa
  • Patent number: 9438887
    Abstract: A depth measurement apparatus is adapted for acquiring a first and second image signals, calculating a correlation value for plural shift amounts, acquiring plural provisional shift amounts, reconstructing the first image signal using a filter corresponding to the provisional shift amounts, analyzing a contrast change by reconstruction, and determining depth on the basis of contrast analysis. The provisional shift amount is acquired by determining a first shift amount at which an extreme value of the correlation value is given, and a first range, which is a range of a predetermined shift amount including the first shift amount, into a plurality of second ranges, and acquiring provisional shift amounts for each of the second ranges.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: September 6, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Makoto Oigawa
  • Publication number: 20150380890
    Abstract: A light source device includes an optical resonator that includes an optical gain medium amplifying light and an optical waveguide having wavelength dispersion of a refractive index, and an optical modulator that modulates an intensity of the light in the optical resonator. An oscillation wavelength of an optical pulse is varied according to a modulation frequency of the optical modulator. The optical modulator can adjust transmittance of the light passing through the optical modulator, and a duty ratio of a transmission time of the light passing through the optical modulator is less than 50%.
    Type: Application
    Filed: September 2, 2015
    Publication date: December 31, 2015
    Inventors: Yukihiro Inoue, Tomohiro Yamada, Makoto Oigawa
  • Publication number: 20150319357
    Abstract: A ranging apparatus includes: a first calculation unit configured to calculate an image shift amount between a first image and a second image, the first image being based on a first signal which corresponds to a light flux transmitted through a first pupil area of an imaging optical system, and the second image being based on a second signal which corresponds to a light flux transmitted through a second pupil area of the imaging optical system; and a second calculation unit configured to calculate a defocus amount from the image shift amount, using a conversion coefficient based on a received light quantity distribution in accordance with the position of the ranging pixel.
    Type: Application
    Filed: April 28, 2015
    Publication date: November 5, 2015
    Inventor: Makoto Oigawa
  • Patent number: 9097906
    Abstract: An optical element includes a substrate including a first surface and metal structure group including a plurality of metal structures, the metal structures being arranged on the first surface in a two-dimensionally isolated manner. Light is incident on the metal structure group in an oblique manner with respect to the normal of the first surface from the metal-structure-group side or the substrate side, so that a polarization state of light that passes through the metal structure group and a polarization state of light that is reflected by the metal structure group differ from each other in accordance with a wavelength range.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: August 4, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Oigawa, Tomohiro Yamada
  • Publication number: 20140320610
    Abstract: A depth measurement apparatus is adapted for acquiring a first and second image signals, calculating a correlation value for plural shift amounts, acquiring plural provisional shift amounts, reconstructing the first image signal using a filter corresponding to the provisional shift amounts, analyzing a contrast change by reconstruction, and determining depth on the basis of contrast analysis. The provisional shift amount is acquired by determining a first shift amount at which an extreme value of the correlation value is given, and a first range, which is a range of a predetermined shift amount including the first shift amount, into a plurality of second ranges, and acquiring provisional shift amounts for each of the second ranges.
    Type: Application
    Filed: April 23, 2014
    Publication date: October 30, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Makoto Oigawa