Patents by Inventor Yasushi Tanabe

Yasushi Tanabe 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: 20220230371
    Abstract: An image processing method includes acquiring a three-dimensional image of a subject eye and a two-dimensional image of the subject eye, specifying a first reference point in the three-dimensional image, specifying a second reference point in the two-dimensional image, and generating a superposed image. In the superposed image, the first reference point in the three-dimensional image is coordinated with the second reference point in the two-dimensional image and the two-dimensional image is superposed with at least a portion of the three-dimensional image.
    Type: Application
    Filed: January 14, 2022
    Publication date: July 21, 2022
    Applicant: NIKON CORPORATION
    Inventors: Yasushi TANABE, Daishi TANAKA, Makoto ISHIDA, Mariko MUKAI
  • Patent number: 11284791
    Abstract: A visualization of choroidal blood vessel size is created. A vortex vein position is detected from a choroidal vascular image in which choroidal blood vessels have been visualized. Image processing is employed on the choroidal vascular image to extract first size choroidal blood vessels of a first size and to extract second size choroidal blood vessels of a second size different to the first size from the choroidal vascular image. A size analysis fundus image is generated in which a rectangular frame indicating the vortex vein position is displayed superimposed on the choroidal vascular image, and in which the first size choroidal blood vessels are displayed in red and the second size choroidal blood vessels are displayed in blue.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: March 29, 2022
    Assignee: NIKON CORPORATION
    Inventors: Yasushi Tanabe, Tomoharu Fujiwara
  • Publication number: 20220076412
    Abstract: A non perfusion area is detected from a fundus image. A fundus image is acquired, a first non perfusion area in a first region of the fundus is extracted from the fundus image, and a second non perfusion area in a second region of the fundus is extracted from the fundus image.
    Type: Application
    Filed: December 28, 2018
    Publication date: March 10, 2022
    Applicant: NIKON CORPORATION
    Inventors: Mariko HIROKAWA, Yasushi TANABE
  • Patent number: 11170213
    Abstract: There is provided an ocular image capturing device comprising an ocular image generating module operable to generate an image of a subject's eye based on light reflected from the eye, and a determination module arranged to determine whether or not at least a portion of a pupil region of the generated image is within a predetermined permissible region within the generated image, and to generate a signal that is indicative of the determination, the pupil region being an image of at least a portion of the pupil of the eye.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: November 9, 2021
    Assignee: OPTOS PLC
    Inventors: Alan Anderson, Praveen Ashok, Tomoharu Fujiwara, Yasushi Tanabe, Hiroshi Kintou, Mariko Hirokawa, Tadashi Umezaki
  • Publication number: 20210127970
    Abstract: An image processing method, which is executed by a processor, comprises acquiring choroid information from an image of a fundus of an examined eye, and comparing the choroid information against a choroid normative database and determining whether or not there is an abnormality in the fundus.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 6, 2021
    Applicant: NIKON CORPORATION
    Inventors: Mariko HIROKAWA, Yasushi TANABE, Tomoharu FUJIWARA
  • Publication number: 20210030267
    Abstract: An image is created to visualize the efficacy of treatment to a fundus. An image processing method includes extracting a first frame from a first moving image of an examined eye and extracting a second frame from a second moving image of the examined eye, and comparing the first frame against the second frame.
    Type: Application
    Filed: October 16, 2020
    Publication date: February 4, 2021
    Applicant: NIKON CORPORATION
    Inventors: Mariko HIROKAWA, Yasushi TANABE
  • Publication number: 20210030266
    Abstract: Data is computed in order to visualize the velocity of blood fluid flowing through a blood vessel at a fundus. An image processing method includes a step of performing registration of each frame in a moving image configured by plural frames of an imaged fundus, and a step of computing visualization data enabling visualization of a state of blood fluid flowing through a blood vessel at the fundus based on a pixel value in each of the registered frames.
    Type: Application
    Filed: October 16, 2020
    Publication date: February 4, 2021
    Applicant: NIKON CORPORATION
    Inventors: Mariko HIROKAWA, Yasushi TANABE
  • Publication number: 20210035294
    Abstract: A feature value related to a positional relationship between a vortex vein position and a characteristic point on a fundus image is computed. The image processing method provided includes a step of analyzing a choroidal vascular image and estimating a vortex vein position, and a step of computing a feature value indicating a positional relationship between the vortex vein position and a position of a particular site on a fundus.
    Type: Application
    Filed: October 16, 2020
    Publication date: February 4, 2021
    Applicant: NIKON CORPORATION
    Inventors: Yasushi TANABE, Mariko HIROKAWA
  • Publication number: 20210022600
    Abstract: A visualization of choroidal blood vessel size is created. A vortex vein position is detected from a choroidal vascular image in which choroidal blood vessels have been visualized. Image processing is employed on the choroidal vascular image to extract first size choroidal blood vessels of a first size and to extract second size choroidal blood vessels of a second size different to the first size from the choroidal vascular image. A size analysis fundus image is generated in which a rectangular frame indicating the vortex vein position is displayed superimposed on the choroidal vascular image, and in which the first size choroidal blood vessels are displayed in red and the second size choroidal blood vessels are displayed in blue.
    Type: Application
    Filed: October 15, 2020
    Publication date: January 28, 2021
    Applicant: NIKON CORPORATION
    Inventors: Yasushi TANABE, Tomoharu FUJIWARA
  • Publication number: 20210027476
    Abstract: A first image is projective transformed into a reference image by using a projective transformation matrix on each pixel of the first image. A projective transformation matrix for transforming a tilted image n into a central image G0 is computed based on positions of combinations of twelve corresponding points indicated in a combination of the central image G0 with the tilted image n. The computed projective transformation matrix is then employed to perform a projective transformation of the tilted image n. A projective-transformed tilted image n1 is created thereby.
    Type: Application
    Filed: October 15, 2020
    Publication date: January 28, 2021
    Applicant: NIKON CORPORATION
    Inventors: Mariko HIROKAWA, Yasushi TANABE
  • Publication number: 20210022606
    Abstract: In the present invention, vortex vein positions are detected from a fundus image. The image processing method comprising: a step in which a choroidal blood vessel structure is analyzed from a fundus image; and a step in which vortex vein positions are detected based on the choroidal blood vessel structure.
    Type: Application
    Filed: October 15, 2020
    Publication date: January 28, 2021
    Applicant: NIKON CORPORATION
    Inventors: Yasushi TANABE, Mariko HIROKAWA
  • Publication number: 20200359888
    Abstract: Predicting a non perfusion area. An enhancement image processing section performs enhancement image processing on a fundus image of a subject eye to enhance vascular portions (304). A prediction processing section predicts a non perfusion area in the fundus image that has been subjected to the enhancement image processing (306 to 312). A generation section generates a non perfusion area candidate image (314).
    Type: Application
    Filed: December 28, 2017
    Publication date: November 19, 2020
    Applicant: NIKON CORPORATION
    Inventors: Mariko HIROKAWA, Yasushi TANABE, Tomoharu FUJIWARA
  • Publication number: 20200237208
    Abstract: An image signal output device including an acquisition section configured to acquire a fundus image, a selection section configured to select a projection for displaying the acquired fundus image from plural projections, a conversion section configured to convert the fundus image into the selected projection, and a processing section configured to output an image signal of the converted fundus image.
    Type: Application
    Filed: July 30, 2018
    Publication date: July 30, 2020
    Applicant: NIKON CORPORATION
    Inventors: Yasushi TANABE, Tomoharu FUJIWARA, Mariko HIROKAWA
  • Publication number: 20190278972
    Abstract: There is provided an ocular image capturing device comprising an ocular image generating module operable to generate an image of a subject's eye based on light reflected from the eye, and a determination module arranged to determine whether or not at least a portion of a pupil region of the generated image is within a predetermined permissible region within the generated image, and to generate a signal that is indicative of the determination, the pupil region being an image of at least a portion of the pupil of the eye.
    Type: Application
    Filed: October 10, 2017
    Publication date: September 12, 2019
    Inventors: Alan ANDERSON, Praveen ASHOK, Tomoharu FUJIWARA, Yasushi TANABE, Hiroshi KINTOU, Mariko HIROKAWA, Tadashi UMEZAKI
  • Patent number: 8081281
    Abstract: A liquid crystal display device includes: a protective film; a polarizing plate; a liquid crystal cell for display; and a backlight, in this order, wherein the protective film is an antiglare optical film including a transparent substrate and at least one antiglare layer and having a concavo-convex shape on a surface of the antiglare optical film, and an integrated frequency value of tilted plane components having tilt angles between a normal line of the transparent substrate and a normal line of the concavo-convex shape on a surface of the antiglare optical film ranging from 0.05 to 0.25° is from 10 to 25% while an integrated frequency value of tilted plane components having the tilt angles ranging from 1.5 to 2.5° is from 10 to 25%.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: December 20, 2011
    Assignee: Fujifilm Corporation
    Inventors: Naohiro Matsunaga, Jun Watanabe, Takuji Okura, Yutaro Mitsumori, Yasushi Tanabe, Ryuji Saneto
  • Publication number: 20090080082
    Abstract: A liquid crystal display device includes: a protective film; a polarizing plate; a liquid crystal cell for display; and a backlight, in this order, wherein the protective film is an antiglare optical film including a transparent substrate and at least one antiglare layer and having a concavo-convex shape on a surface of the antiglare optical film, and an integrated frequency value of tilted plane components having tilt angles between a normal line of the transparent substrate and a normal line of the concavo-convex shape on a surface of the antiglare optical film ranging from 0.05 to 0.25° is from 10 to 25% while an integrated frequency value of tilted plane components having the tilt angles ranging from 1.5 to 2.5° is from 10 to 25%.
    Type: Application
    Filed: September 23, 2008
    Publication date: March 26, 2009
    Inventors: Naohiro MATSUNAGA, Jun WATANABE, Takuji OKURA, Yutaro MITSUMORI, Yasushi TANABE, Ryuji SANETO
  • Publication number: 20080106490
    Abstract: A video display device includes: a display unit for displaying video information on a screen; and a mechanical vibrating unit for vibrating at least one of constituent members including a light source that exist on an optical path, starting from the light source, of the display unit, mechanically and randomly at a very small amplitude.
    Type: Application
    Filed: September 28, 2007
    Publication date: May 8, 2008
    Applicant: FUJIFILM Corporation
    Inventor: Yasushi Tanabe
  • Patent number: 7238467
    Abstract: A silver halide emulsion comprising silver halide grains covered with two dye layers in combination. The two dye layers comprises an inner dye layer adjoining to the silver halide grain, and containing at least one sensitizing dye capable of spectrally sensitizing silver halide, and an outer dye layer adjoining to the inner dye layer, and containing at least two dyes. The light absorption energy of the outer dye layer is equal to or higher than that of the inner dye layer, an energy-releasing wavelength of the outer dye layer overlaps with an energy-absorbing wavelength of the inner dye layer, the sensitizing dyes constituting the inner dye layer include an anion and/or betaine dyes, the dyes constituting the outer dye layer include an anion and cation dyes, and the anion dye is more than the cation dye in terms of an addition amount and/or an adsorption amount.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: July 3, 2007
    Assignee: Fujifilm Corporation
    Inventors: Tadashi Ikeda, Yasushi Tanabe, Hiroshi Kawakami, Takeshi Suzumoto
  • Publication number: 20050019712
    Abstract: A silver halide emulsion comprising silver halide grains covered with two dye layers in combination. The two dye layers comprises an inner dye layer adjoining to the silver halide grain, and containing at least one sensitizing dye capable of spectrally sensitizing silver halide, and an outer dye layer adjoining to the inner dye layer, and containing at least two dyes. The light absorption energy of the outer dye layer is equal to or higher than that of the inner dye layer, an energy-releasing wavelength of the outer dye layer overlaps with an energy-absorbing wavelength of the inner dye layer, the sensitizing dyes constituting the inner dye layer include an anion and/or betaine dyes, the dyes constituting the outer dye layer include an anion and cation dyes, and the anion dye is more than the cation dye in terms of an addition amount and/or an adsorption amount.
    Type: Application
    Filed: July 20, 2004
    Publication date: January 27, 2005
    Inventors: Tadashi Ikeda, Yasushi Tanabe, Hiroshi Kawakami, Takeshi Suzumoto
  • Patent number: 6500607
    Abstract: A silver halide photographic material is disclosed, comprising a support having provided thereon at least one silver halide emulsion layer, wherein the silver halide emulsion layer contains, in the dispersion medium phase of the emulsion, one or more kinds of inorganic fine particles having a refractive index the total weight of the fine particles contained in the unit volume of the dispersion medium phase is from 1.0 to 95 wt %, the dispersion medium phase containing the fine particles is substantially transparent to the photosensitive peak wavelength light of the emulsion layer, and the photographic material is exposed and processed in the development process comprising at least a developing step and a fixing step.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: December 31, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mitsuo Saitou, Yoichi Maruyama, Toshiyuki Nabeta, Masaaki Miki, Keiichi Miyazaki, Mikio Ihama, Shunji Takada, Norihiro Omae, Yasushi Tanabe