Patents by Inventor Yasufumi Takama

Yasufumi Takama 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: 10424067
    Abstract: An image processing apparatus comprises a corresponding point information obtaining unit configured to obtain corresponding point information input for alignment between images; a satisfaction degree obtaining unit configured to obtain a satisfaction degree of the corresponding point information based on the corresponding point information; and a presentation control unit configured to control presentation of information about the satisfaction degree.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: September 24, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasufumi Takama, Kiyohide Satoh
  • Publication number: 20190253639
    Abstract: An image processing system includes an image obtaining unit that obtains images based on capturing from plural directions by plural cameras, an information obtaining unit that obtains viewpoint information indicating a virtual viewpoint, and a generation unit configured to generate virtual viewpoint images on a basis of the obtained images and viewpoint information. The generation unit generates a first virtual viewpoint image outputted to a display apparatus that displays an image for a user to specify a virtual viewpoint and a second virtual viewpoint image outputted to an output destination different from the display apparatus by using at least one of data generated in a process for generating the first virtual viewpoint image by image processing using the plural images obtained by the image obtaining unit and the first virtual viewpoint image, the second virtual viewpoint image having a higher image quality than that of the first virtual viewpoint image.
    Type: Application
    Filed: April 26, 2019
    Publication date: August 15, 2019
    Inventor: Yasufumi Takama
  • Publication number: 20190098277
    Abstract: An image processing system that generates a virtual viewpoint image based on a plurality of captured images acquired by capturing an image of an image capturing target region from a plurality of directions using a plurality of cameras includes a storage control unit that stores, in a storage unit, visibility information about an element of a three-dimensional shape model of an object whose image is captured by at least one of the plurality of cameras, an acquisition unit that acquires viewpoint information indicating one or more virtual viewpoints, and an image generation unit that generates one or more virtual viewpoint images corresponding to the one or more virtual viewpoints identified by the viewpoint information, based on the plurality of captured images, the three-dimensional shape model, and the visibility information stored in the storage unit.
    Type: Application
    Filed: September 18, 2018
    Publication date: March 28, 2019
    Inventor: Yasufumi Takama
  • Publication number: 20180367709
    Abstract: Highly accurate estimation results are obtained even though cameras used for shape estimation of an object are distributed in accordance with a plurality of points of interest. The image processing apparatus of the present invention includes: an estimation unit configured to estimate an object shape of an object within a multi-viewpoint video image captured by each of a plurality of camera groups in units of camera groups; and an integration unit configured to integrate estimation results of the object shapes estimated in units of camera groups based on a camera map indicating a position relationship between common image capturing areas in each of the plurality of camera groups.
    Type: Application
    Filed: June 5, 2018
    Publication date: December 20, 2018
    Inventor: Yasufumi Takama
  • Patent number: 9909854
    Abstract: A plurality of cross section images which can be included in the range of a specific error occurring when specifying a correspondence cross section in a three-dimensional medical image of an object corresponding to a cross section of interest of the object are acquired from the three-dimensional medical image. The acquired cross section images are displayed on a display screen.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: March 6, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Yoshibayashi, Yasufumi Takama, Takaaki Endo, Ryo Ishikawa, Kiyohide Satoh
  • Publication number: 20170337694
    Abstract: An image processing apparatus comprises a corresponding point information obtaining unit configured to obtain corresponding point information input for alignment between images; a satisfaction degree obtaining unit configured to obtain a satisfaction degree of the corresponding point information based on the corresponding point information; and a presentation control unit configured to control presentation of information about the satisfaction degree.
    Type: Application
    Filed: August 8, 2017
    Publication date: November 23, 2017
    Inventors: Yasufumi Takama, Kiyohide Satoh
  • Patent number: 9767562
    Abstract: An image processing apparatus comprises a corresponding point information obtaining unit configured to obtain corresponding point information input for alignment between images; a satisfaction degree obtaining unit configured to obtain a satisfaction degree of the corresponding point information based on the corresponding point information; and a presentation control unit configured to control presentation of information about the satisfaction degree.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: September 19, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasufumi Takama, Kiyohide Satoh
  • Publication number: 20170124766
    Abstract: An image processing apparatus includes an image acquisition unit configured to acquire volume data, a feature point acquisition unit configured to acquire a coordinate of a feature point of an object in the volume data, a range setting unit configured to set a projection range defining a range of the volume data from which a projection image is to be generated, set a display range defining a range within which feature points are to be displayed, and adjust at least one of the projection range and the display range such that the projection range and the display range satisfy a predetermined relationship; and a display control unit configured to generate the projection image from the volume data according to the projection range and superimpose the feature point in the display range on the projection image.
    Type: Application
    Filed: October 25, 2016
    Publication date: May 4, 2017
    Inventors: Yasufumi Takama, Takaaki Endo, Kiyohide Satoh
  • Publication number: 20160345837
    Abstract: An image capturing condition of a target portion, such as a tumor, is adjusted while a burden of an examinee is reduced. Deformation of an MRI image obtained in advance is estimated (simulated) such that a shape of a subject in a current holding condition and a shape of the subject in the MRI image coincide with each other. Thereafter, in accordance with an obtained result of the deformation simulation, information on an image capturing condition of the target portion is estimated and displayed for a user. In this way, the user may recognize the image capturing condition in the current holding state. Consequently, risk for holding a breast by excessive holding force and risk for repetitive performance of image capturing due to inefficient holding of the target portion are reduced, and accordingly, a burden of the subject may be reduced.
    Type: Application
    Filed: January 15, 2015
    Publication date: December 1, 2016
    Applicant: Canon Kabushiki Kaisha
    Inventors: Yasufumi Takama, Kiyohide Satoh
  • Patent number: 9373172
    Abstract: The present invention provides an ophthalmic-image processing apparatus including a layer-specifying unit configured to specify at least one layer from an image generated based on volume data of a subject's eye, and a display-control unit configured to display a projected image on a display unit, where the projected image is achieved by projecting volume data of the specified layer.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: June 21, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasufumi Takama
  • Patent number: 9357913
    Abstract: An ophthalmologic image display apparatus for displaying information about an eye includes an input unit configured to input a tomographic image of the eye, an acquisition unit configured to acquire diagnostic supporting information associated with positional information about the tomographic image of the eye, a processing unit configured to perform processing for assigning a voxel value to volume data constituting the tomographic image based on a reflection intensity value indicating the tomographic image and the diagnostic supporting information, and a display control unit configured to cause a display unit to display an image processed by the processing unit.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: June 7, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasufumi Takama, Yoshihiko Iwase
  • Publication number: 20160027179
    Abstract: An image processing apparatus comprises a corresponding point information obtaining unit configured to obtain corresponding point information input for alignment between images; a satisfaction degree obtaining unit configured to obtain a satisfaction degree of the corresponding point information based on the corresponding point information; and a presentation control unit configured to control presentation of information about the satisfaction degree.
    Type: Application
    Filed: July 16, 2015
    Publication date: January 28, 2016
    Inventors: Yasufumi Takama, Kiyohide Satoh
  • Patent number: 9113779
    Abstract: An image processing apparatus includes an analysis unit configured to obtain information regarding an order of display of a plurality of layers from a cross-sectional image, and a display control unit configured to perform control such that methods for displaying the plurality of layers are sequentially changed and the plurality of layers are displayed on a display unit on the basis of the information regarding the order of display.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: August 25, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yukio Sakagawa, Yasufumi Takama
  • Patent number: 9084563
    Abstract: A medical system comprising a selection unit configured to select at least one of layers in a three-dimensional tomographic image of a retina, and a generation unit configured to generate an opacity function indicating an opacity of each of a plurality of voxels constituting the selected layer, based on a frequency distribution of luminance values of the plurality of voxels.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: July 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasufumi Takama
  • Patent number: 8994753
    Abstract: An image processing apparatus includes an extraction unit configured to extract a structure of a tested eye from an OCT image obtained by optical coherence tomography, an extraction unit configured to extract a structure of the tested eye from an eyeground image obtained by a scanning laser ophthalmoscope or a fundus camera, a calculation unit configured to calculate a reliability degree of the extraction for each of the extracted structures, and a display control unit configured to display the extracted structures superimposed on a image of eyeground according to the calculated reliability.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: March 31, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuta Nakano, Yasufumi Takama, Kenji Morita
  • Publication number: 20150070469
    Abstract: A plurality of cross section images which can be included in the range of a specific error occurring when specifying a correspondence cross section in a three-dimensional medical image of an object corresponding to a cross section of interest of the object are acquired from the three-dimensional medical image. The acquired cross section images are displayed on a display screen.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 12, 2015
    Inventors: Hiroshi Yoshibayashi, Yasufumi Takama, Takaaki Endo, Ryo Ishikawa, Kiyohide Satoh
  • Publication number: 20140233823
    Abstract: An ophthalmologic image display apparatus for displaying information about an eye includes an input unit configured to input a tomographic image of the eye, an acquisition unit configured to acquire diagnostic supporting information associated with positional information about the tomographic image of the eye, a processing unit configured to perform processing for assigning a voxel value to volume data constituting the tomographic image based on a reflection intensity value indicating the tomographic image and the diagnostic supporting information, and a display control unit configured to cause a display unit to display an image processed by the processing unit.
    Type: Application
    Filed: April 29, 2014
    Publication date: August 21, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yasufumi Takama, Yoshihiko Iwase
  • Patent number: 8744158
    Abstract: An ophthalmologic image display apparatus for displaying information about an eye includes an input unit configured to input a tomographic image of the eye, an acquisition unit configured to acquire diagnostic supporting information associated with positional information about the tomographic image of the eye, a processing unit configured to perform processing for assigning a voxel value to volume data constituting the tomographic image based on a reflection intensity value indicating the tomographic image and the diagnostic supporting information, and a display control unit configured to cause a display unit to display an image processed by the processing unit.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: June 3, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasufumi Takama, Yoshihiko Iwase
  • Publication number: 20140111514
    Abstract: A medical system comprising a selection unit configured to select at least one of layers in a three-dimensional tomographic image of a retina, and a generation unit configured to generate an opacity function indicating an opacity of each of a plurality of voxels constituting the selected layer, based on a frequency distribution of luminance values of the plurality of voxels.
    Type: Application
    Filed: December 17, 2013
    Publication date: April 24, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yasufumi Takama
  • Patent number: 8699774
    Abstract: An image processing apparatus includes: a storage unit configured to store tomographic images in relation to the fundus of an examined eye; a detection unit configured to detect a boundary of retinal pigment epithelium and an inner limiting membrane from each of the images and to detect a part where the boundary is discontinuous; a determination unit configured to determine a surface of a sclera model for each of the images by use of the detected boundary and the inner limiting membrane; a generation unit configured to generate a sclera model including an optic papilla periphery by use of the surface of the sclera model and the part where the boundary is discontinuous; a combining unit configured to combine each of the images and the sclera model to generate a combined image; and a display unit configured to display the combined image generated by the combining unit.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: April 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keiko Yonezawa, Yasufumi Takama