Patents by Inventor Yoshihiko Iwase

Yoshihiko Iwase 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: 20220335633
    Abstract: A medical image processing apparatus including an obtaining unit configured to obtain a plurality of tomographic images obtained by radially scanning measuring light on an eye to be examined, and corresponding to a plurality of locations of the eye to be examined, respectively, and an imaging parameter corresponding to each tomographic image, a modifying unit configured to modify a shape of a tomographic image corresponding to the imaging parameter by using the imaging parameter, and an aligning unit configured to align a plurality of shape-modified tomographic images with each other.
    Type: Application
    Filed: May 25, 2022
    Publication date: October 20, 2022
    Inventor: Yoshihiko Iwase
  • Publication number: 20220183551
    Abstract: The optical coherence tomography apparatus is an optical coherence tomography apparatus that obtains a tomographic image of an eye to be examined by using combined light obtained by combining (a) return light from the eye to be examined irradiated with measurement light and (b) reference light, the optical coherence tomography apparatus including an optical path length difference changing unit arranged to change an optical path length difference between the measurement light and the reference light, a driving unit arranged to drive the optical path length difference changing unit, a determining unit configured to determine, using a learned model, a driving amount of the driving unit from the obtained tomographic image, and a controlling unit configured to control the driving unit using the determined driving amount.
    Type: Application
    Filed: December 9, 2021
    Publication date: June 16, 2022
    Inventors: Kazumasa Tanaka, Hiroki Uchida, Yoshihiko Iwase, Osamu Sagano, Ritsuya Tomita
  • Publication number: 20220110521
    Abstract: An apparatus includes an obtaining unit configured to obtain, using an optical coherence tomography, an analysis map for a disk and an analysis map for a macular area, which are analysis results of three-dimensional data obtained by capturing an image of a region of a fundus of a subject's eye that includes the disk and the macular area, and a control unit configured to cause a display unit to display side by side a two-dimensional image of the region including the disk and the macular area, the analysis map for the optic disk, and the analysis map for the macular area.
    Type: Application
    Filed: September 30, 2021
    Publication date: April 14, 2022
    Inventors: Yoshihiko Iwase, Osamu Sagano, Hiroki Uchida, Juun Horie, Riuma Takahashi
  • Publication number: 20210398259
    Abstract: An image processing apparatus includes display control means for displaying, on display means, a blend image obtained by performing blend processing at a variable transmissivity in accordance with an instruction of an operator using an optical coherence tomography (OCT) image and an OCT angiography (OCTA) image of mutually corresponding regions in a subject that are acquired by an OCT, setting means for setting a region of interest in the displayed blend image, and execution means for executing processing on the set region of interest in at least one image of the OCT image and the OCTA image.
    Type: Application
    Filed: September 7, 2021
    Publication date: December 23, 2021
    Inventors: Manabu Yamazoe, Yoshihiko Iwase, Riuma Takahashi, Hiroki Uchida, Ritsuya Tomita
  • Publication number: 20210390696
    Abstract: A medical image processing apparatus includes: an obtaining unit configured to obtain a first image that is a medical image of a predetermined site of a subject; an image quality improving unit configured to generate, from the first image, a second image in which image quality is improved compared to the first image, using an image quality improving engine including a machine learning engine; and a display controlling unit configured to cause a composite image obtained by combining the first image and the second image according to a ratio obtained using information relating to at least a partial region in at least one of the first image and the second image to be displayed on a display unit.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Inventors: Yoshihiko Iwase, Manabu Yamazoe, Hiroki Uchida, Ritsuya Tomita
  • Publication number: 20210224957
    Abstract: A medical image processing apparatus includes: an obtaining unit configured to obtain a first image that is a motion contrast en-face image of an eye to be examined; and an image quality improving unit configured to generate a second image with at least one of lower noise and higher contrast than the obtained first image using the obtained first image as input data that is input into an image quality improving engine, wherein the image quality improving engine includes a machine learning engine that has been obtained by using training data including a second image with at least one of lower noise and higher contrast than a first image that is a motion contrast en-face image of an eye to be examined.
    Type: Application
    Filed: April 6, 2021
    Publication date: July 22, 2021
    Inventors: Yoshihiko Iwase, Manabu Yamazoe, Hideaki Mizobe, Hiroki Uchida, Ritsuya Tomita
  • Publication number: 20210183019
    Abstract: An image processing apparatus includes: an obtaining unit configured to obtain a first image of an eye to be examined; an image quality improving unit configured to generate a second image with at least one of lower noise and higher contrast than the obtained first image using the obtained first image as an input data of a learned model, wherein the learned model has been obtained by using training data including a second image with at least one of lower noise and higher contrast than a first image of an eye to be examined; and a display controlling unit configured to cause the obtained first image and the generated second image to be switched, juxtaposed or superimposed and displayed on a display unit.
    Type: Application
    Filed: February 23, 2021
    Publication date: June 17, 2021
    Inventors: Hiroki Uchida, Yoshihiko Iwase, Osamu Sagano, Ritsuya Tomita
  • Publication number: 20210158525
    Abstract: A medical image processing apparatus including an obtaining unit configured to obtain a tomographic image of an eye to be examined, and a first processing unit configured to perform first detection processing for detecting at least one layer of a plurality of layers in the obtained tomographic image, by using the obtained tomographic image as an input data of a learned model, wherein the learned model has been obtained by using training data including data indicating at least one layer of a plurality of layers in a tomographic image of an eye to be examined.
    Type: Application
    Filed: February 5, 2021
    Publication date: May 27, 2021
    Inventors: Yoshihiko Iwase, Hideaki Mizobe, Ritsuya Tomita
  • Patent number: 10973406
    Abstract: An image processing apparatus including an identification unit configured to identify a lamina cribrosa region by analyzing tomographic image data on an eye to be inspected, a generation unit configured to generate a luminance en face image and a motion contrast en face image of the eye to be inspected by using information on the identified lamina cribrosa region, and a display control unit configured to cause a display unit to display at least one of the luminance en face image and the motion contrast en face image with the information on the identified lamina cribrosa region superimposed on the displayed image.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: April 13, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Imamura, Yoshihiko Iwase
  • Publication number: 20210104313
    Abstract: A medical image processing apparatus includes: an obtaining unit configured to obtain a first image that is a medical image of a predetermined site of a subject; an image quality improving unit configured to generate, from the first image, a second image in which the image quality is improved compared to the first image by using an image quality improving engine that includes a machine learning engine; and a display controlling unit configured to cause a display unit to display a composite image obtained by combining the first image and the second image according to a ratio obtained using information relating to at least a partial region of the first image.
    Type: Application
    Filed: December 14, 2020
    Publication date: April 8, 2021
    Inventors: Hideaki MIZOBE, Yoshihiko IWASE, Manabu YAMAZOE, Hiroki UCHIDA, Ritsuya TOMITA
  • Patent number: 10916012
    Abstract: An image processing apparatus includes an acquisition unit configured to acquire a tomographic image of at least a retina and a vitreous body of a subject's eye, and a detection unit configured to detect, based on an intensity value of the tomographic image, an outer edge of the vitreous body in a region located on a vitreous body side of a region regarding the retina in the tomographic image.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: February 9, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yoshihiko Iwase
  • Patent number: 10872237
    Abstract: An image processing system includes: an analysis unit configured to obtain information indicating a degree of curvature of a retina from a tomographic image of an eye to be examined; and an obtaining unit configured to obtain a category of the eye to be examined based on an analysis result.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: December 22, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshihiko Iwase, Hiroyuki Shinbata, Makoto Sato
  • Patent number: 10846892
    Abstract: An apparatus includes: an acquisition unit configured to acquire pieces of three-dimensional data of a subject eye obtained at different times, the three-dimensional data including pieces of two-dimensional data obtained at different positions; a first planar alignment unit configured to perform first planar alignment including alignment between the pieces of three-dimensional data in a plane orthogonal to a depth direction of the subject eye; a first depth alignment unit configured to perform first depth alignment including alignment between pieces of two-dimensional data in at least one piece of three-dimensional data among the pieces of three-dimensional data and further including alignment between the pieces of three-dimensional data in the depth direction; and a generation unit configured to generate interpolation data of at least one piece of three-dimensional data among the pieces of three-dimensional data by using a result of the first planar alignment and a result of the first depth alignment.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: November 24, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshihiko Iwase, Hiroki Uchida
  • Patent number: 10803568
    Abstract: A first area and a second area are set for a first two-dimensional tomographic image where the first area and the second area overlap each other in a partial area in a horizontal direction of the first two-dimensional tomographic image. A positional deviation amount between the first two-dimensional tomographic image and a second two-dimensional tomographic image is obtained in each of the first area and the second area. A moving amount of the second two-dimensional tomographic image is determined with respect to the first two-dimensional tomographic image in an area where the first area and the second area overlap based on the positional deviation amount in the first area and the positional deviation amount the second area. Alignments are performed on the first two-dimensional tomographic image and the second two-dimensional tomographic image in an area where the first area and the second area overlap based on the moving amount.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: October 13, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshihiko Iwase, Osamu Sagano, Makoto Sato, Hiroki Uchida
  • Patent number: 10789721
    Abstract: An image processing apparatus includes first alignment means configured to perform an alignment in a horizontal direction on a plurality of two-dimensional tomographic images based on measurement light controlled to scan an identical position of an eye according to a first method, and second alignment means configured to perform an alignment in a depth direction on the plurality of two-dimensional tomographic images according to a second method that is different from the first method.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: September 29, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshihiko Iwase, Osamu Sagano, Makoto Sato, Hiroki Uchida
  • Patent number: 10769789
    Abstract: An image processing apparatus includes an information obtaining unit configured to obtain three-dimensional polarization sensitive tomographic information and three-dimensional motion contrast information about a subject based on tomographic signals of lights having different polarizations, the lights being obtained by splitting a combined light obtained by combining a returned light from the subject illuminated with a measurement light with a reference light corresponding to the measurement light, an obtaining unit configured to obtain a lesion region of the subject using the three-dimensional polarization sensitive tomographic information, and an image generation unit configured to generate an image in which the lesion region is superimposed on a motion contrast image generated using the three-dimensional motion contrast information.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: September 8, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masashi Kotoku, Yoshihiko Iwase, Makoto Sato
  • Patent number: 10755451
    Abstract: Provided is an image processing apparatus including: a data acquiring unit configured to acquire a plurality of pieces of tomographic data, which are obtained by performing optical coherence tomographic imaging of an object to be inspected through use of measuring light a plurality of times; a noise acquiring unit configured to acquire a noise characteristic of the tomographic data; a coefficient determining unit configured to determine a weighting coefficient corresponding to each pixel position in a tomographic image generated from the tomographic data based on the plurality of pieces of tomographic data and the noise characteristic; a changing unit configured to change a value of the tomographic data based on the weighting coefficient; and an image generating unit configured to generate the tomographic image based on the tomographic data that has the value changed.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: August 25, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Sato, Yoshihiko Iwase
  • Publication number: 20200050852
    Abstract: An image processing system includes: an analysis unit configured to obtain information indicating a degree of curvature of a retina from a tomographic image of an eye to be examined; and an obtaining unit configured to obtain a category of the eye to be examined based on an analysis result.
    Type: Application
    Filed: October 21, 2019
    Publication date: February 13, 2020
    Inventors: Yoshihiko Iwase, Hiroyuki Shinbata, Makoto Sato
  • Patent number: 10552672
    Abstract: A medical image processing apparatus includes a unit configured to analyze a target medical image, a unit configured to register information representing an aptitude of each doctor with respect to interpretation of a specific lesion and a modality used by each doctor, and a unit configured to, when the analysis result includes information associated with a lesion, decide an assigned doctor based on information representing the aptitude of each doctor with respect to interpretation of the specific lesion, and, when the analysis result includes no information associated with a lesion, decide an assigned doctor based on the modality.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: February 4, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshihiko Iwase, Hiroshi Imamura
  • Patent number: 10529045
    Abstract: A report concerning the contents obtained by interpretation based on a medical image can be efficiently created without any constraints of expression. An information processing apparatus according to this invention includes an image analysis unit which acquires information concerning a region name or disease name based on an analysis result on the input medical image, an input unit which inputs the result obtained by interpreting the medical image as character information, a conversion candidate prediction unit which outputs conversion candidates concerning the input character information, and a display control unit which displays the input character information upon converting the character information into character information selected from the conversion candidates. The apparatus further includes a priority level setting unit which sets priority levels in advance for character information output as the conversion candidates.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: January 7, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshihiko Iwase, Akihiro Katayama, Hiroshi Imamura