Patents by Inventor Takashi Wakui

Takashi Wakui 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: 20210287052
    Abstract: In a case where the operation program is started, a CPU of the mini-batch learning apparatus functions as a calculation unit, a specifying unit, and an evaluation unit. The calculation unit calculates an area ratio of each of a plurality of classes in mini-batch data. The specifying unit specifies, as a correction target class, a rare class of which the area ratio is lower than a setting value. The evaluation unit evaluates the class determination accuracy of the machine learning model by using a loss function. As correction processing, the evaluation unit sets a weight for a loss value of the rare class to be larger than a weight for a loss value of a class other than the rare class.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 16, 2021
    Applicant: FUJIFILM Corporation
    Inventor: Takashi WAKUI
  • Publication number: 20210287042
    Abstract: In a case where the operation program is started, a CPU of the mini-batch learning apparatus functions as a calculation unit, a specifying unit, and an update unit. The calculation unit calculates an area ratio of each of a plurality of classes in mini-batch data. The specifying unit specifies a rare class of which the area ratio is lower than a setting value. The update unit sets an update level of the machine learning model in a case where the rare class is specified by the specifying unit to be lower than an update level of the machine learning model in a case where the rare class is not specified by the specifying unit.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 16, 2021
    Applicant: FUJIFILM Corporation
    Inventor: Takashi WAKUI
  • Publication number: 20210201017
    Abstract: A learning apparatus learns a machine learning model for performing semantic segmentation of determining a plurality of classes in an input image in units of pixels by extracting, for each layer, features which are included in the input image and have different frequency bands of spatial frequencies. A learning data analysis unit analyzes the frequency bands included in an annotation image of learning data. A learning method determination unit determines a learning method using the learning data based on an analysis result of the frequency bands by the learning data analysis unit. A learning unit learns the machine learning model via the determined learning method using the learning data.
    Type: Application
    Filed: March 15, 2021
    Publication date: July 1, 2021
    Applicant: FUJIFILM Corporation
    Inventor: Takashi WAKUI
  • Patent number: 11037292
    Abstract: An evaluator 21 that evaluates states of cells included in each region of interest of a cell image, and a predictor 22 that performs, in advance, machine learning of a relationship between evaluation results for a specific region of interest within a first cell image obtained by imaging cells before a staining process and regions around the specific region of interest and staining states of cells of the specific region of interest within a second cell image obtained by imaging the same imaging targets as the cells of the first cell image after the staining process are provided. The predictor 22 predicts staining states of cells of a specific region of interest based on evaluation results for the specific region of interest and regions around the specific region of interest among the evaluation results for the third cell image of the cells before the staining process.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: June 15, 2021
    Assignee: FUJIFILM Corporation
    Inventor: Takashi Wakui
  • Patent number: 11030751
    Abstract: Provided are a cell image evaluation device, method, and program which are capable of performing more accurate and high reliable evaluation even though a captured image of each part to be observed within a container is an image of which contrast is low due to influence of meniscus. The cell image evaluation device includes a region determination unit that determines whether a captured image obtained by capturing an inside of a container that contains a cell is an image obtained by capturing a meniscus region within the container or an image obtained by capturing a non-meniscus region within the container and an image evaluation unit that evaluates a state of the cell included in the captured image. The image evaluation unit evaluates the image of the meniscus region and the image of the non-meniscus region by different evaluation methods.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: June 8, 2021
    Assignee: FUJIFILM Corporation
    Inventor: Takashi Wakui
  • Patent number: 11009689
    Abstract: An observation device includes a stage, an imaging optical system that includes an objective lens, a detection section that includes displacement sensors that detect a vertical position of a cultivation container, an imaging optical system controller that controls the imaging optical system driving section to move the objective lens in an optical axis direction on the basis of the vertical position of the cultivation container, and a horizontal driving section that moves the stage in a main scanning direction and a sub-scanning direction and reciprocates the stage in the main scanning direction, in which the detection section detects the vertical position of the cultivation container at a forward position in a movement direction of the observation region with reference to the position of the observation region of the imaging optical system with respect to the cultivation container.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: May 18, 2021
    Assignee: FUJIFILM Corporation
    Inventor: Takashi Wakui
  • Publication number: 20210087517
    Abstract: Provided is an information processing apparatus including an acquiring unit that acquires cell information indicating a state of a cell from production of a pluripotent stem cell to differentiation of the pluripotent stem cell into a specific differentiated cell by differentiation induction, and process history information indicating a history of a processing process for obtaining the differentiated cell, and a deriving unit that derives differentiation potency information indicating differentiation potency of the pluripotent stem cell based on the cell information and the process history information which are acquired by the acquiring unit.
    Type: Application
    Filed: December 8, 2020
    Publication date: March 25, 2021
    Inventors: Yuta MURAKAMI, Tatsuya FUJINAMI, Kenta MATSUBARA, Katsuko SATO, Ayako YAMAMOTO, Hidetoshi TAKAYAMA, Takashi WAKUI, Satoshi AIBA, Shinichi KIKUCHI, Masaya NAGASE, Xiao LING
  • Patent number: 10880453
    Abstract: An image processing device (100) includes a non-discharge correction processing unit (114) that performs an image correction process for correcting an image defect caused by a non-discharge nozzle in an inkjet head and includes, as different files, a first halftone processing program file (152) that performs first halftone processing for a normal portion, which is an image region other than a non-discharge correction portion to be subjected to non-discharge correction and a non-discharge portion, and a second halftone processing program file (154) that performs second halftone processing for the non-discharge correction portion. The image processing device executes the first halftone processing program file (152) for the normal portion in an input image (102) and executes the second halftone processing program file (154) for the non-discharge correction portion, thereby obtaining a non-discharge-corrected halftone image (104).
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: December 29, 2020
    Assignee: FUJIFILM CORPORATION
    Inventor: Takashi Wakui
  • Publication number: 20200404186
    Abstract: A marker image detection section detects a marker image from a captured image for determining a defocus amount. A discriminator discriminates the defocus amount of the marker image included in the captured image. The discriminator performs learning using feature amounts related to a plurality of teacher marker images captured with various defocus amounts and discriminates a defocus amount of an input marker image.
    Type: Application
    Filed: September 7, 2020
    Publication date: December 24, 2020
    Inventor: Takashi WAKUI
  • Publication number: 20200381968
    Abstract: A rotating electric machine includes a rotor and a stator. The rotor includes: a rotor core having a refrigerant flow path; and an end surface plate arranged at least on one side of the rotor core. The refrigerant flow path includes: a first refrigerant flow path; and a second refrigerant flow path which is disposed further on a radial inner side than the first refrigerant flow pat. The stator includes: a stator core; and a coil end portion protruding from at least one side of the stator core. The end surface plate includes: a root side refrigerant supply portion which communicates with the first refrigerant flow path and supplies the refrigerant to a root region of the coil end portion; and a distal side refrigerant supply portion which communicates with the second refrigerant flow path and supplies the refrigerant to a distal region of the coil end portion.
    Type: Application
    Filed: May 27, 2020
    Publication date: December 3, 2020
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takashi WAKUI, Yasuhiro FUJITA
  • Patent number: 10761295
    Abstract: Provided are an imaging device, an imaging method and an imaging control program which make it possible to shorten an imaging time, and to capture an image of each observation region at an appropriate focusing position regardless of the state of installation of a culture vessel on a stage. In a case where an observation target is imaged multiple times, a focusing position of an observation region within a culture vessel is detected by auto-focus control during first imaging, and the first imaging of each observation region is performed using the focusing position. Next, the focusing position of a reference position is detected by auto-focus control during second imaging subsequent to the first imaging, and the focusing position of each observation region detected in the first imaging is corrected on the basis of the detected focusing position and the focusing position of the reference position in the first imaging.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: September 1, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Takashi Wakui
  • Publication number: 20200192059
    Abstract: An object is to increase a speed of an auto-focus control and perform evaluation with higher accuracy and high reliability in an imaging control apparatus, a method, and a non-transitory computer readable recording medium storing an imaging control program. An auto-focus control unit 21 performs an auto-focus control based on a first position of a container in a vertical direction at a target observation position. The first position is detected by a displacement sensor preceding the target observation position in a main scanning direction. A processing control unit 23 controls a process for observation of the target observation position based on the first position and a second position of the container in the vertical direction at the target observation position. The second position is detected by a displacement sensor succeeding the target observation position in the main scanning direction.
    Type: Application
    Filed: February 24, 2020
    Publication date: June 18, 2020
    Applicant: FUJIFILM Corporation
    Inventor: Takashi WAKUI
  • Publication number: 20200193664
    Abstract: An object of an image processing apparatus, a method, and a non-transitory computer readable recording medium storing a program is to enable acquisition of a composite image in which an effect of a meniscus formed on a liquid surface of a liquid in a container is reduced. A plurality of captured images acquired by setting a part of adjacent observation regions to overlap with each other and imaging a container a plurality of times while changing a position of the observation region are acquired. An overlapping region selection unit 51 selects the captured image having a highest contrast in the overlapping region with at least one adjacent captured image in each captured image Gi as an image of the overlapping region. A composite image generation unit 52 generates a composite image Gs by linking the plurality of captured images in which the images of the overlapping regions are selected.
    Type: Application
    Filed: February 24, 2020
    Publication date: June 18, 2020
    Applicant: FUJIFILM Corporation
    Inventor: Takashi WAKUI
  • Patent number: 10659694
    Abstract: Provided are an imaging device that make it possible to perform high-speed image capture of an observation target such as a cell, and to correct a shake caused by the movement of a stage or the like appropriately and simply. The imaging device includes a stage on which a vessel having an observation target received therein is installed, an imaging optical system that forms an image of the observation target, a horizontal driving unit that moves the stage in a main scanning direction and a sub-scanning direction orthogonal to the main scanning direction, and moves the stage forward and backward in the main scanning direction, an imaging unit that receives the image formed by the imaging optical system, and outputs an image signal of the observation target, and a shake correction unit that performs shake correction for correcting a shake caused by movement of the stage on the image signal.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: May 19, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Takashi Wakui
  • Publication number: 20190370973
    Abstract: Provided are a cell image evaluation device, method, and program which are capable of performing more accurate and high reliable evaluation even though a captured image of each part to be observed within a container is an image of which contrast is low due to influence of meniscus. The cell image evaluation device includes a region determination unit that determines whether a captured image obtained by capturing an inside of a container that contains a cell is an image obtained by capturing a meniscus region within the container or an image obtained by capturing a non-meniscus region within the container and an image evaluation unit that evaluates a state of the cell included in the captured image. The image evaluation unit evaluates the image of the meniscus region and the image of the non-meniscus region by different evaluation methods.
    Type: Application
    Filed: August 19, 2019
    Publication date: December 5, 2019
    Applicant: FUJIFILM Corporation
    Inventor: Takashi WAKUI
  • Publication number: 20190370967
    Abstract: Provided are a cell image evaluation device, method, and program which are capable of more accurate and high reliable evaluation even though a captured image of each part to be observed within a container deteriorates. The cell image evaluation device includes an image evaluation unit that evaluates a state of a cell included in a captured image obtained by capturing an inside of the container that contains the cell based on the captured image, and a deterioration determination unit that determines whether or not the captured image deteriorates. The image evaluation unit changes an evaluation method of the captured image according to a determination result of the deterioration determination unit.
    Type: Application
    Filed: August 16, 2019
    Publication date: December 5, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Kenta MATSUBARA, Takashi WAKUI
  • Publication number: 20190287244
    Abstract: An evaluator 21 that evaluates states of cells included in each region of interest of a cell image, and a predictor 22 that performs, in advance, machine learning of a relationship between evaluation results for a specific region of interest within a first cell image obtained by imaging cells before a staining process and regions around the specific region of interest and staining states of cells of the specific region of interest within a second cell image obtained by imaging the same imaging targets as the cells of the first cell image after the staining process are provided. The predictor 22 predicts staining states of cells of a specific region of interest based on evaluation results for the specific region of interest and regions around the specific region of interest among the evaluation results for the third cell image of the cells before the staining process.
    Type: Application
    Filed: June 4, 2019
    Publication date: September 19, 2019
    Applicant: FUJIFILM Corporation
    Inventor: Takashi WAKUI
  • Patent number: 10330583
    Abstract: There is provided a cell imaging apparatus and method capable of generating a high-quality composite image as an image to be evaluated. The cell imaging apparatus includes: an imaging unit 10 that images a cell group including a plurality of periodically moving cells while changing an imaging range; a phase information acquisition unit 21 that acquires information based on the timing of the same phase in each period of the periodic movement; and a composite image generation unit 22 that generates a composite image by arranging images of the respective imaging ranges. The imaging unit 10 captures images with the same phase for the respective imaging ranges on the basis of the information based on the timing of the same phase, and the composite image generation unit 22 generates the composite image by arranging the images with the same phase.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: June 25, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Takashi Wakui
  • Patent number: 10276863
    Abstract: A composite material including a carbon-containing material and a non-stoichiometric titanium compound shown by a chemical formula of Li4+xTi5?xO12, where x is in a range of 0<x<0.30, the composite material including at least one composite particle that has a core portion including the non-stoichiometric titanium compound and a mixed layer formed on a surface of the core portion, the mixed layer including non-stoichiometric titanium compound and carbon, and having an atomic ratio of titanium and carbon in a range of Ti/C=1/50 or more.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: April 30, 2019
    Assignees: KURARAY CO., LTD., INCORPORATED NATIONAL UNIVERSITY IWATE UNIVERSITY
    Inventors: Takashi Wakui, Naoki Fujiwara, Yuhi Shimazumi, Yoshio Yamamoto, Koichi Ui, Yoshihiro Kadoma
  • Publication number: 20190121058
    Abstract: Provided are an imaging device, an imaging method and an imaging control program which make it possible to shorten an imaging time, and to capture an image of each observation region at an appropriate focusing position regardless of the state of installation of a culture vessel on a stage. In a case where an observation target is imaged multiple times, a focusing position of an observation region within a culture vessel is detected by auto-focus control during first imaging, and the first imaging of each observation region is performed using the focusing position. Next, the focusing position of a reference position is detected by auto-focus control during second imaging subsequent to the first imaging, and the focusing position of each observation region detected in the first imaging is corrected on the basis of the detected focusing position and the focusing position of the reference position in the first imaging.
    Type: Application
    Filed: December 13, 2018
    Publication date: April 25, 2019
    Applicant: FUJIFILM Corporation
    Inventor: Takashi WAKUI