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).

  • Patent number: 10052017
    Abstract: An image processing apparatus has an acquisition unit which acquires a second tomogram related to a first tomogram of an eye to be examined based on position information of an eye fundus of the eye to be examined according to a predetermined rule; and a display control unit which displays the first tomogram and the second tomogram on a display unit.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: August 21, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihiko Iwase, Akihiro Katayama
  • Patent number: 10013727
    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: August 28, 2008
    Date of Patent: July 3, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshihiko Iwase, Akihiro Katayama, Hiroshi Imamura
  • Patent number: 10002446
    Abstract: In an image processing apparatus, a display control unit controls displaying such that a subtraction image between a plurality of fundus images of an eye corresponding to a plurality of three-dimensional tomographic images obtained by capturing images of the eye at different times is displayed on a display unit, and a specifying unit specifies a plurality of two-dimensional tomographic images, in the plurality of three-dimensional tomographic images, to be displayed on the display unit, by a position specified on the displayed subtraction image.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: June 19, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Sato, Yoshihiko Iwase
  • Patent number: 9993152
    Abstract: An image processing apparatus includes a tomographic image acquisition unit configured to acquire a polarization-sensitive tomographic image of a subject, and an extraction unit configured to extract, from the polarization-sensitive tomographic image of the subject, a region in which a polarization state is scrambled.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: June 12, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihiko Iwase, Tomoyuki Makihira, Makoto Sato, Kazuhide Miyata, Hiroyuki Shinbata, Ritsuya Tomita, Daisuke Kibe
  • Publication number: 20180096479
    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: Application
    Filed: October 3, 2017
    Publication date: April 5, 2018
    Inventor: Yoshihiko Iwase
  • Patent number: 9913581
    Abstract: To accurately position a past photography position and a photography position this time in follow up using polarization OCT images. In follow up, multiple polarization-sensitive tomographic images are positioned based on multiple polarization planar images of an object, corresponding to multiple polarization-sensitive tomographic images obtained by photographing the object at another time.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: March 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihiko Iwase, Makoto Sato, Tomoyuki Makihira
  • Publication number: 20180049635
    Abstract: An image processing apparatus includes a detecting unit configured to execute structural analysis on a tomographic image acquired by an acquiring unit and detect an abnormal portion of the eye; and a display control unit configured to cause a displaying unit to display a finding of the abnormal portion detected by the detecting unit, as a sentence or a word in a manner superimposed on the tomographic image.
    Type: Application
    Filed: October 27, 2017
    Publication date: February 22, 2018
    Inventors: Akihito Uji, Hiroyuki Sekiguchi, Yoshihiko Iwase
  • Patent number: 9888844
    Abstract: A control apparatus includes an irradiation unit configured to irradiate a measurement object with a measuring beam, a restriction unit configured to restrict the measuring beam from being incident on the measurement object and to reflect or scatter the measuring beam, and a polarization control unit configured to control, based on the measuring beam reflected or scattered by the restriction unit, polarization of the measuring beam.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: February 13, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tomoyuki Makihira, Yoshihiko Iwase, Makoto Sato, Kazuhide Miyata, Hiroyuki Shinbata, Ritsuya Tomita, Daisuke Kibe
  • Publication number: 20180039833
    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 20, 2017
    Publication date: February 8, 2018
    Inventors: Yoshihiko Iwase, Hiroyuki Shinbata, Makoto Sato
  • Publication number: 20180003479
    Abstract: The present invention relates to accurately determining a contour of a depolarizing region. An image processing apparatus extracts a depolarizing region in a polarization-sensitive tomographic image of a subject's eye, and detects, in a tomographic intensity image of the subject's eye, a region corresponding to the extracted depolarizing region.
    Type: Application
    Filed: December 22, 2015
    Publication date: January 4, 2018
    Inventors: Nobuhiro Tomatsu, Toshiharu Sumiya, Makoto Sato, Yoshihiko Iwase, Isao Komine
  • Publication number: 20180000341
    Abstract: A alteration caused in a nerve fiber layer could not accurately be displayed. There is provided a tomographic imaging apparatus including a generation means for generating a nerve fiber bundle map, a designation means for designating an arbitrary nerve fiber bundle in the nerve fiber bundle map, and a display control means for causing display means to display a parameter of the designated nerve fiber bundle.
    Type: Application
    Filed: December 15, 2015
    Publication date: January 4, 2018
    Inventors: Nobuhiro Tomatsu, Yoshihiko Iwase, Makoto Sato, Toshiharu Sumiya, Makoto Fukuhara, Atsushi Goto, Mitsuro Sugita, Michael Pircher, Clemens Vass, Christoph Hitzenberger
  • Publication number: 20170372132
    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: Application
    Filed: July 12, 2017
    Publication date: December 28, 2017
    Inventors: Yoshihiko Iwase, Hiroshi Imamura
  • Patent number: 9826896
    Abstract: An image processing apparatus includes a detecting unit configured to execute structural analysis on a tomographic image acquired by an acquiring unit and detect an abnormal portion of the eye; and a display control unit configured to cause a displaying unit to display a finding of the abnormal portion detected by the detecting unit, as a sentence or a word in a manner superimposed on the tomographic image.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: November 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihito Uji, Hiroyuki Sekiguchi, Yoshihiko Iwase
  • Patent number: 9824273
    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: February 16, 2016
    Date of Patent: November 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshihiko Iwase, Hiroyuki Shinbata, Makoto Sato
  • Publication number: 20170323446
    Abstract: An image processing apparatus includes a detection unit configured to detect a depolarized region in a polarization tomographic image of a subject's eye, an estimation unit configured to estimate a curve using the extracted depolarized region, a discrimination unit configured to discriminate the extracted depolarized region as a region including the estimated curve and a region which is discontinuous with the region including the estimated curve, and a correcting unit configured to correct at least a portion of a result of the discrimination representing the discontinuous region to a result of discrimination representing another region.
    Type: Application
    Filed: October 14, 2015
    Publication date: November 9, 2017
    Inventors: Yoshihiko Iwase, Makoto Sato
  • Publication number: 20170316567
    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: Application
    Filed: April 24, 2017
    Publication date: November 2, 2017
    Inventors: Masashi Kotoku, Yoshihiko Iwase, Makoto Sato
  • Publication number: 20170221203
    Abstract: An image processing device includes: a signal processing unit configured to generate phase retardation information of a subject eye by using information about a plurality of lights obtained by dividing, into lights of different polarizations, a light obtained by combining a light returned from the subject eye irradiated with a measurement light and a reference light corresponding to the measurement light; and a detection unit configured to detect a region in which a change amount of the phase retardation information in a depth direction of the subject eye is larger than a threshold value.
    Type: Application
    Filed: January 20, 2017
    Publication date: August 3, 2017
    Inventors: Yoshihiko Iwase, Makoto Sato
  • Patent number: 9717409
    Abstract: An image processing apparatus includes a planar image acquisition unit configured to acquire a planar image of a subject, a tomographic image acquisition unit configured to acquire a tomographic image indicating a polarization state of the subject, and a display control unit configured to cause a display unit to display the planar image and the tomographic image indicating the polarization state side by side.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 1, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihiko Iwase, Kazuhide Miyata, Tomoyuki Makihira, Makoto Sato, Hiroyuki Shinbata, Ritsuya Tomita, Daisuke Kibe
  • Patent number: 9700210
    Abstract: An image processing apparatus includes an image acquisition unit configured to acquire a tomographic image of an object, a layer detection unit configured to detect a layer that constitutes the object from the tomographic image acquired by the image acquisition unit, and a normal structure estimation unit configured to estimate a normal structure of the layer based on the layer detected by the layer detection unit and a feature that is modified by a lesion of the layer.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: July 11, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihiko Iwase, Shinji Uchiyama, Kiyohide Satoh
  • Patent number: 9700199
    Abstract: To accurately position multiple tomographic image. An image processing apparatus includes a detecting unit configured to detect motion of an eye in a plurality of polarization-sensitive tomographic images, based on a predetermined region extracted from the plurality of polarization-sensitive tomographic images of the eye, and a positioning unit configured to position a plurality of tomographic luminance images corresponding to the plurality of polarization-sensitive tomographic images, based on the detected movement.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: July 11, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuhiro Tomatsu, Makoto Sato, Tomoyuki Makihira, Yoshihiko Iwase, Kazuhide Miyata, Hiroyuki Shinbata, Ritsuya Tomita, Daisuke Kibe