Patents by Inventor Kohtaro Umezawa

Kohtaro Umezawa 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: 11955226
    Abstract: An information processing apparatus includes a processor, and a memory storing a program. The program, when executed by the processor, causes the information processing apparatus to: acquire a medical image obtained by imaging a subject, acquire an inspection result of the medical image, perform inference on the medical image; and control outputting of an inference result of the medical image inference to an external device based on the inspection result of the medical image.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: April 9, 2024
    Assignees: CANON KABUSHIKI KAISHA, CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Kohtaro Umezawa
  • Publication number: 20240054327
    Abstract: An information processing system includes a second information processing apparatus configured to communicate with a first information processing apparatus via a network, an inference target data acquisition unit configured to acquire inference target data, and an inference unit configured to perform predetermined inference processing on the inference target data by using a first partial model and a second partial model. The first information processing apparatus includes the first partial model configured to include a first input layer, a first group of intermediate layers including at least one of the intermediate layers in the group of intermediate layers, and a first output layer, and the second information processing apparatus includes the second partial model configured to include a second group of intermediate layers including an intermediate layer different from the intermediate layers included in the first group of intermediate layers in the group of intermediate layers, and the second output layer.
    Type: Application
    Filed: August 10, 2023
    Publication date: February 15, 2024
    Inventors: KOHTARO UMEZAWA, RYUTA UEDA, RITSUYA TOMITA
  • Publication number: 20240054404
    Abstract: An information processing system includes first and second information processing apparatuses. The first information processing apparatus includes a first acquisition unit that acquires a first inference model based on a first neural network including an input layer, an intermediate layer group, and an output layer, a first training unit that trains the first inference model using teacher data, and a transmission unit that transmits output information based on forward propagation by the first training unit to the second information processing apparatus. The second information processing apparatus includes a second acquisition unit that acquires a second inference model based on a second neural network including an input layer, an intermediate layer group, and an output layer, wherein the second inference model is a common inference model and is similar to the first inference model, and a second training unit that trains the second inference model based on the output information.
    Type: Application
    Filed: August 8, 2023
    Publication date: February 15, 2024
    Inventors: KOHTARO UMEZAWA, RYUTA UEDA, RITSUYA TOMITA
  • Publication number: 20230010769
    Abstract: An information processing system includes a first information processing apparatus including a first inference unit configured to perform first inference processing on inference target medical data using a first partial model including an input layer and at least some of intermediate layers and corresponding to a plurality of second partial models, and a first output unit configured to output a result of the first inference processing and selection information to a second information processing apparatus, and the second information processing apparatus including a second inference unit configured to perform second inference processing by inputting a result of the first inference processing to a second partial model selected from among the plurality of second partial models based on the selection information.
    Type: Application
    Filed: July 6, 2022
    Publication date: January 12, 2023
    Inventors: Kohtaro Umezawa, Kojiro Nishi, Ryuta Ueda
  • Patent number: 11529057
    Abstract: A photoacoustic apparatus according to the present invention is a photoacoustic apparatus for obtaining image data based on an acoustic wave generated by irradiating an object with light of a first wavelength and light of a second wavelength which is different from the first wavelength, the photoacoustic apparatus including a processing unit configured to: obtain a first image data group corresponding to the first wavelength generated based on an acoustic wave generated by irradiating the object with light of the first wavelength a plurality of times, obtain first positional deviation information corresponding to an irradiation timing with the light of the first wavelength on the basis of a first image data group corresponding to the first wavelength, and obtain second positional deviation information corresponding to an irradiation timing with the light of the second wavelength on the basis of the first positional deviation information.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: December 20, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kohtaro Umezawa, Ryuichi Nanaumi
  • Patent number: 11494972
    Abstract: The disclosure proposes an image processing apparatus for rendering a maximum intensity projection image by extracting, as objects to be rendered, only voxels having a high brightness value in three-dimensional volume data and using the brightness values of these voxels for the corresponding pixels.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: November 8, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Sekiguchi, Kohtaro Umezawa
  • Publication number: 20220270758
    Abstract: A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain clinical data related to a subject. The processing circuitry is configured to perform an analyzing process to analyze the obtained clinical data. The processing circuitry is configured to generate retention information for retaining the subject in a medical facility and determine at least one notification destination of the retention information, on a basis of an analysis result obtained from the analyzing process. The processing circuitry is configured to transmit the retention information to the determined notification destination.
    Type: Application
    Filed: February 9, 2022
    Publication date: August 25, 2022
    Applicants: CANON MEDICAL SYSTEMS CORPORATION, Canon Kabushiki Kaisha
    Inventors: Toru TAKAHASHI, Atsuko SUGIYAMA, Akihiro KOGA, Hideaki MIZOBE, Kohtaro UMEZAWA, Shuhei TOBA
  • Publication number: 20220108124
    Abstract: An information processing apparatus according to an exemplary embodiment of the present disclosure includes a storage unit configured to store a plurality of trained models including a first trained model for classifying medical image data into a class belonging to a first class hierarchy, and a second trained model for classifying the medical image data into a class belonging to a second class hierarchy lower than the first class hierarchy, an acquisition unit configured to acquire information about inference, a selection unit configured to select a plurality of trained models having a hierarchical relationship from among the stored plurality of trained models, based on the acquired information about inference, and a notification unit configured to provide a notification of the selected plurality of trained models.
    Type: Application
    Filed: October 4, 2021
    Publication date: April 7, 2022
    Inventors: Kohtaro Umezawa, Ryuta Ueda
  • Publication number: 20210209834
    Abstract: The disclosure proposes an image processing apparatus for rendering a maximum intensity projection image by extracting, as objects to be rendered, only voxels having a high brightness value in three-dimensional volume data and using the brightness values of these voxels for the corresponding pixels.
    Type: Application
    Filed: March 19, 2021
    Publication date: July 8, 2021
    Inventors: Hiroyuki Sekiguchi, Kohtaro Umezawa
  • Patent number: 10997699
    Abstract: The present invention allows to estimate a continuous surface that defines a boundary surface of an object using image data, even if the image data was acquired by an imaging method in which image information on the boundary surface of the object is limited. An image processing apparatus according to the present invention includes a calculating unit that calculates a brightness gradient of a voxel group constituting volume data which represents a reconstructed image, and an estimating unit that estimates by using the brightness gradient a continuous surface which defines a boundary surface of an object corresponding to the volume data.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: May 4, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Sekiguchi, Kohtaro Umezawa
  • Patent number: 10997762
    Abstract: The present invention provides an image display system which can simplify an operation of an operator for displaying images appropriate for diagnosis. An image display system according to the present invention includes a first obtaining unit configured to obtain first image data piece, a second obtaining unit configured to obtain a first meta-information piece regarding the first image data piece, a third obtaining unit configured to obtain a second image data piece, a fourth obtaining unit configured to obtain a second meta-information piece regarding the second image data piece, and a display control unit configured to determine a superimposition style corresponding to a combination of the first and second meta-information pieces based on the first and second meta-information pieces and display a superimposition image of the first and second image data pieces in the superimposition style on a display unit.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: May 4, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kohtaro Umezawa, Mitsuhiro Shingu, Kazuhito Oka
  • Patent number: 10997775
    Abstract: The disclosure proposes an image processing apparatus for rendering a maximum intensity projection image by extracting, as objects to be rendered, only voxels having a high brightness value in three-dimensional volume data and using the brightness values of these voxels for the corresponding pixels.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: May 4, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Sekiguchi, Kohtaro Umezawa
  • Publication number: 20210065880
    Abstract: An information processing apparatus includes a processor, and a memory storing a program. The program, when executed by the processor, causes the information processing apparatus to: acquire a medical image obtained by imaging a subject, acquire an inspection result of the medical image, perform inference on the medical image; and control outputting of an inference result of the medical image inference to an external device based on the inspection result of the medical image.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 4, 2021
    Inventor: KOHTARO UMEZAWA
  • Publication number: 20200388395
    Abstract: An apparatus according to an aspect of the embodiments includes an acquisition unit configured to acquire medical image data, an inference unit configured to perform an inference with respect to the acquired medical image data, a calculation unit configured to calculate reliability based on a result of the inference, and a determination unit configured to determine a number of specialists who perform medical image data interpretation, based on the reliability.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 10, 2020
    Inventors: Kohtaro Umezawa, Kiyohide Satoh
  • Patent number: 10695006
    Abstract: The present invention employs an apparatus that includes a first acquisition unit that acquires information relating to an oxygen saturation distribution, a determination unit that determines, based on the information relating to the oxygen saturation distribution, whether a calculated value of an oxygen saturation at each of a plurality of positions is included in a first numerical range from 100% to a first value more than 100% or a second numerical range more than the first value, and a display control unit that causes a display unit to display an image of the oxygen saturation distribution so as to be able to distinguish whether the calculated value of the oxygen saturation at each position is included in the first or second numerical range based on a determination result.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: June 30, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kohtaro Umezawa, Takuji Oishi, Yoshiko Nakamura
  • Patent number: 10578588
    Abstract: A photoacoustic apparatus comprising a processing unit configured to obtain first image data corresponding to a first wavelength, obtain second image data corresponding to a second wavelength different from the first wavelength, perform normalization processing on at least one of the first image data and the second image data so as to decrease a difference in an image characteristic between the first image data and the second image data, and obtain position shift information associated with irradiation timing of the light having the first and second wavelengths on the basis of the first and second image data at least one of which is subjected to the normalization processing.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: March 3, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kohtaro Umezawa, Ryuichi Nanaumi
  • Patent number: 10548477
    Abstract: A photoacoustic apparatus includes a processing unit configured to obtain a first image data group corresponding to a first wavelength, obtain first position shift information corresponding to irradiation timing of the light having the first wavelength on the basis of the first image data group corresponding to the first wavelength, obtain a second image data group corresponding to a second wavelength different from the first wavelength, obtain second position shift information corresponding to irradiating timing of the light having the second wavelength on the basis of the second image data group corresponding to the second wavelength, and obtain third position shift information on the basis of the first position shift information and the second position shift information.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: February 4, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kohtaro Umezawa, Ryuichi Nanaumi
  • Publication number: 20190378314
    Abstract: The present invention provides an image display system which can simplify an operation of an operator for displaying images appropriate for diagnosis. An image display system according to the present invention includes a first obtaining unit configured to obtain first image data piece, a second obtaining unit configured to obtain a first meta-information piece regarding the first image data piece, a third obtaining unit configured to obtain a second image data piece, a fourth obtaining unit configured to obtain a second meta-information piece regarding the second image data piece, and a display control unit configured to determine a superimposition style corresponding to a combination of the first and second meta-information pieces based on the first and second meta-information pieces and display a superimposition image of the first and second image data pieces in the superimposition style on a display unit.
    Type: Application
    Filed: October 3, 2017
    Publication date: December 12, 2019
    Inventors: Kohtaro Umezawa, Mitsuhiro Shingu, Kazuhito Oka
  • Patent number: 10492694
    Abstract: An object information acquisition apparatus, comprises a holding member that holds an object and to be movable relative to the object; a position acquirer that acquires information on a position of the object; a first controller that controls a position of the holding member; a measurement unit that receives acoustic waves from the object; a second controller that controls a position of the measurement unit; an information acquirer that acquires information of the object; and a storage unit that stores history information representing information on a contact state of the holding member with the object, wherein the first controller controls the position of the holding member independently of the control performed by the second controller and adjusts the contact state of the holding member with the object based on the history information.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: December 3, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kohtaro Umezawa
  • Patent number: 10420472
    Abstract: An apparatus according to the present invention includes a processor processing characteristic distribution information derived from an acoustic wave generated from an object and which indicates specific values at a plurality of positions inside the object, wherein the processor: sets a first position of interest; acquires first weight distribution information which is related to a plurality of positions including the first position of interest; and acquires a substitute value for a specific value at the first position of interest using the first weight distribution information, the specific value at the first position of interest, and a specific value at a position that differs from the first position of interest among the plurality of positions.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: September 24, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kohtaro Umezawa