Patents by Inventor Takumi Washio

Takumi Washio 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: 10891787
    Abstract: A biological model creation apparatus sets a plurality of control points respectively corresponding to a plurality of target points set on a plurality of valve annuli of a specified heart, on a plurality of valve annuli in a mesh model of a heart. Then, the biological model creation apparatus determines the positions of the control points in the mesh model on the basis of a first and second evaluation value regarding the positions of the plurality of control points. The first evaluation value indicates a degree of matching to relative positions among target points belonging to the same valve annulus. The second evaluation value indicates a degree of matching to relative positions among target points belonging to different valve annuli. Then, the biological model creation apparatus deforms the mesh model such that the positions of the plurality of control points coincide with the positions of their corresponding target points.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: January 12, 2021
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Kohei Hatanaka, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Patent number: 10863917
    Abstract: An excitement propagation visualization apparatus detects an excitement propagation wave front for each analysis time on the basis of excitement propagation data indicative of a potential generated by excitement propagation. Next, the excitement propagation visualization apparatus detects for each analysis time an intersection of a straight line passing through a first point inside a heart and a second point outside the heart and the excitement propagation wave front. Furthermore, the excitement propagation visualization apparatus generates for each analysis time a display object associated with the intersection of the straight line and the excitement propagation wave front. In addition, the excitement propagation visualization apparatus draws the display object generated for each analysis time at a position of the associated intersection in a drawing area indicative of an analysis space.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: December 15, 2020
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Masahiro Watanabe, Toshiaki Hisada, Seiryo Sugiura, Jun-ichi Okada, Takumi Washio
  • Patent number: 10867086
    Abstract: A streakline visualization apparatus sets a partial region including a discrete point at a first position on a first streakline in an analysis space as an analysis target region of the discrete point. Based on a velocity of fluid in the analysis target region indicated by fluid information, the apparatus calculates a second position indicating a destination of a particle on the discrete point at a second analysis time point. Next, based on information about a structure in the analysis target region indicated by structure information, the apparatus determines a region occupied by the structure in the analysis target region at the second analysis time point. Next, based on the first and second positions, the apparatus determines whether a second streakline has entered the occupied region. If the second streakline has not entered the occupied region, the apparatus displays the second streakline passing through the second position.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: December 15, 2020
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Daisuke Kushibe, Masahiro Watanabe, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Patent number: 10831950
    Abstract: A streakline visualization apparatus sets a partial region including a discrete point at a first position on a first streakline in an analysis space as an analysis target region of the discrete point. Based on a velocity of fluid in the analysis target region indicated by fluid information, the apparatus calculates a second position indicating a destination of a particle on the discrete point at a second analysis time point. Next, based on information about a structure in the analysis target region indicated by structure information, the apparatus determines a region occupied by the structure in the analysis target region at the second analysis time point. Next, based on the first and second positions, the apparatus determines whether a second streakline has entered the occupied region. If the second streakline has not entered the occupied region, the apparatus displays the second streakline passing through the second position.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: November 10, 2020
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Daisuke Kushibe, Masahiro Watanabe, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Patent number: 10803672
    Abstract: A designation device includes a storage that stores therein a three-dimensional model of an organ, and a processor coupled to the storage. The processor executes a process including: first acquiring designations of a plurality of planes of the three-dimensional model of the organ; second acquiring designations of a specific number of pieces of point information indicating an infarct site of the organ for any one or all of the planes; determining the infarct site of the organ that is interposed between the planes on the basis of the pieces of point information; and outputting an image reproducing determination result of the infarct site of the organ at the determining using the three-dimensional model.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: October 13, 2020
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Masahiro Watanabe, Machiko Nakagawa, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Patent number: 10799191
    Abstract: In a streakline visualization apparatus, a processing unit calculates, by using an expression including a correction value for correcting an error attributable to accelerated motion of a plurality of grid points represented by position information, time differential values of velocities of fluid on the plurality of grid points at each of the plurality of first time points. The processing unit calculates, based on the velocities and the time differential values of the velocities of the fluid on the plurality of grid points at each of the plurality of first time points, positions of a series of a plurality of particles sequentially outputted from a particle generation source as analysis time progresses at each of a plurality of second time points having a second time interval shorter than the first time interval. The processing unit generates display information about a streakline indicating the series of the plurality of particles.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: October 13, 2020
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Daisuke Kushibe, Masahiro Watanabe, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-Ichi Okada
  • Publication number: 20190362548
    Abstract: A biological model creation apparatus sets a plurality of control points respectively corresponding to a plurality of target points set on a plurality of valve annuli of a specified heart, on a plurality of valve annuli in a mesh model of a heart. Then, the biological model creation apparatus determines the positions of the control points in the mesh model on the basis of a first and second evaluation value regarding the positions of the plurality of control points. The first evaluation value indicates a degree of matching to relative positions among target points belonging to the same valve annulus. The second evaluation value indicates a degree of matching to relative positions among target points belonging to different valve annuli. Then, the biological model creation apparatus deforms the mesh model such that the positions of the plurality of control points coincide with the positions of their corresponding target points.
    Type: Application
    Filed: May 20, 2019
    Publication date: November 28, 2019
    Applicants: FUJITSU LIMITED, The University of Tokyo
    Inventors: Kohei HATANAKA, Toshiaki HISADA, Seiryo SUGIURA, Takumi WASHIO, Jun-ichi OKADA
  • Patent number: 10453209
    Abstract: A disclosed modelling method includes: calculating a first function for generating data of a closed surface that contains plural points representing an annular structure in an object, based on positional information of the plural points; generating data of a first point set representing a boundary of the object, from tomographic image data; detecting data of points which are included in the first point set and located inside the closed surface by using the first function; removing the detected data of points from the data of the first point set to generate data of a second point set; calculating a second function for generating data of a shape of the object using the data of the second point set and data of the plural points; and storing data of the shape of the object, which is generated by using the second function, in the memory.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: October 22, 2019
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Machiko Nakagawa, Masaki Kazama, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Publication number: 20190110706
    Abstract: An excitement propagation visualization apparatus detects an excitement propagation wave front for each analysis time on the basis of excitement propagation data indicative of a potential generated by excitement propagation. Next, the excitement propagation visualization apparatus detects for each analysis time an intersection of a straight line passing through a first point inside a heart and a second point outside the heart and the excitement propagation wave front. Furthermore, the excitement propagation visualization apparatus generates for each analysis time a display object associated with the intersection of the straight line and the excitement propagation wave front. In addition, the excitement propagation visualization apparatus draws the display object generated for each analysis time at a position of the associated intersection in a drawing area indicative of an analysis space.
    Type: Application
    Filed: October 11, 2018
    Publication date: April 18, 2019
    Applicants: FUJITSU LIMITED, The University of Tokyo
    Inventors: Masahiro WATANABE, Toshiaki HISADA, Seiryo SUGIURA, Jun-ichi OKADA, Takumi WASHIO
  • Patent number: 10262762
    Abstract: In a vascular data generation apparatus, a processor generates first vascular data based on anatomical statistics data about vessels of an organ. This first vascular data has a tree structure representing a vascular network in the organ. The processor further generates second vascular data representing a plurality of vessels that connect a plurality of nodes in a geometric model of the organ with the vascular network represented by the first vascular data.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: April 16, 2019
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Takashi Iwamura, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Patent number: 10236083
    Abstract: A visualization apparatus includes a memory unit and a computing unit. The memory unit stores a circulation model in which a vascular network, of an organ, having a diameter equal to or smaller than a predetermined value is defined on a two-dimensional plane, and a simulation result of a blood flow in the vascular network of the circulation model. The computing unit transforms the circulation model into a three-dimensional structure including the vascular network located on a cylindrical surface of a cylinder, and displays the simulation result on the three-dimensional structure.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: March 19, 2019
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Masahiro Watanabe, Yoshimasa Kadooka, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-Ichi Okada
  • Publication number: 20190035161
    Abstract: A designation device includes a storage that stores therein a three-dimensional model of an organ, and a processor coupled to the storage. The processor executes a process including: first acquiring designations of a plurality of planes of the three-dimensional model of the organ; second acquiring designations of a specific number of pieces of point information indicating an infarct site of the organ for any one or all of the planes; determining the infarct site of the organ that is interposed between the planes on the basis of the pieces of point information; and outputting an image reproducing determination result of the infarct site of the organ at the determining using the three-dimensional model.
    Type: Application
    Filed: July 23, 2018
    Publication date: January 31, 2019
    Applicants: FUJITSU LIMITED, The University of Tokyo
    Inventors: Masahiro Watanabe, Machiko Nakagawa, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Patent number: 10163529
    Abstract: A disclosed method includes: defining two first points in a model cross section of a model of an object and two corresponding second points in an image that is a cross section of the object for a reference time; performing first transforming including expansion or reduction for the model cross section so that a position of a second point is identical to a position of a corresponding first point; superimposing the image and the model cross section after the performing; second transforming a second model cross section for a second time after the reference time, so that positions of two second points in a second image for the second time are almost identical to positions of corresponding two first points in the second model cross section; and superimposing the second image and the second model cross section after the second transforming.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: December 25, 2018
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Masahiro Watanabe, Satoshi Fuchikami, Yoshimasa Kadooka, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Patent number: 10115192
    Abstract: Based on heart behavior data, a computation unit determines a first time step at which a heart exhibits a first behavior in response to a first wave of an electrical signal, as well as a second time step at which the heart exhibits a second behavior in response to a second wave of the same. The computation unit reproduces the heart's behavior over time by updating a three-dimensional model of the heart according to the heart behavior data, simultaneously with variations in electrical signal strength over time according to electrocardiogram data. The computation unit coordinates this reproduction such that a first shape of the heart at the first time is reproduced step simultaneously with the first wave of the electrical signal, and such that a second shape of the heart at the second time step is reproduced simultaneously with the second wave of the electrical signal.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: October 30, 2018
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Masahiro Watanabe, Satoshi Fuchikami, Tadashi Ataka, Yoshimasa Kadooka, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Patent number: 10114911
    Abstract: A fluid structure interaction simulation method includes a graph information forming process to form graph information of nodes obtained by discretizing a computing region for each of a fluid and a structure that are represented by meshes, and a main time development loop process to simulate a physical phenomenon. The loop process includes arranging IMEs (Interaction Mediating Elements) that move with a displacement of the structure, on a boundary of the structure, defining, within the IME, correcting functions of a pressure and a velocity of the fluid that interact with the pressure and the velocity of the fluid and the displacement of the structure, and executing a simulation based on the correcting functions, in a state in which the meshes of the fluid are mismatched to the meshes of the structure.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: October 30, 2018
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Takashi Yamazaki, Yoshimasa Kadooka, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Junichi Okada
  • Patent number: 10055518
    Abstract: A shape data generation apparatus includes a detection unit and a generation unit. With reference to model information indicating the thicknesses and the positions of both ends of a plurality of elements each having a cylindrical surface, the detection unit detects a connection point where two or more elements are connected to each other, on the basis of the positions of both ends of the elements. The generation unit generates a curved surface collectively covering the connecting ends of the two or more elements, on the basis of the thicknesses and the positions of both ends of the two or more elements connected at the connection point.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: August 21, 2018
    Assignees: FUJITSU LIMITED, The University of Tokyo
    Inventors: Tadashi Ataka, Masahiro Watanabe, Satoshi Fuchikami, Yoshimasa Kadooka, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Patent number: 10013533
    Abstract: A geometric model of an organ represents its shape as a collection of elements formed from nodes and connections among them. A first vessel network model represents a network of first vessels whose diameters are larger than or equal to a threshold. A plurality of second vessel networks each represent a network of second vessels whose diameters are smaller than the threshold. In a simulator apparatus, a first analysis unit analyzes hemodynamics in the first vessels, based on the geometric model and first vessel network model of the organ and reflecting the motion of the organ. A second analysis unit analyzes hemodynamics in the second vessel network models connected to the nodes, by using output data of the first analysis unit which indicates the hemodynamics in the first vessels at each of the nodes.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: July 3, 2018
    Assignees: FUJITSU LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Takashi Iwamura, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Junichi Okada
  • Publication number: 20180157772
    Abstract: A streakline visualization apparatus sets a partial region including a discrete point at a first position on a first streakline in an analysis space as an analysis target region of the discrete point. Based on a velocity of fluid in the analysis target region indicated by fluid information, the apparatus calculates a second position indicating a destination of a particle on the discrete point at a second analysis time point. Next, based on information about a structure in the analysis target region indicated by structure information, the apparatus determines a region occupied by the structure in the analysis target region at the second analysis time point. Next, based on the first and second positions, the apparatus determines whether a second streakline has entered the occupied region. If the second streakline has not entered the occupied region, the apparatus displays the second streakline passing through the second position.
    Type: Application
    Filed: November 30, 2017
    Publication date: June 7, 2018
    Applicants: FUJITSU LIMITED, The University of Tokyo
    Inventors: Daisuke KUSHIBE, Masahiro Watanabe, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada
  • Publication number: 20180153483
    Abstract: In a streakline visualization apparatus, a processing unit calculates, by using an expression including a correction value for correcting an error attributable to accelerated motion of a plurality of grid points represented by position information, time differential values of velocities of fluid on the plurality of grid points at each of the plurality of first time points. The processing unit calculates, based on the velocities and the time differential values of the velocities of the fluid on the plurality of grid points at each of the plurality of first time points, positions of a series of a plurality of particles sequentially outputted from a particle generation source as analysis time progresses at each of a plurality of second time points having a second time interval shorter than the first time interval. The processing unit generates display information about a streakline indicating the series of the plurality of particles.
    Type: Application
    Filed: November 30, 2017
    Publication date: June 7, 2018
    Applicants: FUJITSU LIMITED, The University of Tokyo
    Inventors: Daisuke KUSHIBE, Masahiro WATANABE, Toshiaki HISADA, Seiryo SUGIURA, Takumi WASHIO, Jun-ichi OKADA
  • Patent number: 9990703
    Abstract: In this visualization method, for each brightness value for voxels included in a predetermined Region Of Interest (ROI) in a three-dimensional volume data, opacity is set according to an appearance frequency of the brightness value. Then, three-dimensional image data is generated for a portion on and under a cross section set for the three-dimensional volume data, by using color data that corresponds to a brightness value of each voxel included in the ROI and the opacity of each brightness value. Then, a cross section image generated from data of voxels on the cross section and the three-dimensional image data are superimposed and displayed.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: June 5, 2018
    Assignees: FUJITSU LIMITED, The University of Tokyo
    Inventors: Machiko Nakagawa, Toshiaki Hisada, Seiryo Sugiura, Takumi Washio, Jun-ichi Okada