Patents by Inventor Atsushi Katsumata

Atsushi Katsumata 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: 8355564
    Abstract: A plurality of images (I, J) of an object (M) when viewed from different viewpoints are taken in. One of the images is set as a standard image (I), and the other image is set as a reference image (J). One-dimensional pixel data strings with a predetermined width (W) are cut out from the standard image (I) and the reference image (J) along epipolar lines (EP1, EP2) calculated from a camera parameter (CPR) and the reference point (p). Calculating a phase-only correlation function from the cut one-dimensional pixel data strings will obtain a correlation peak position (Pa1). A positional shift amount (d) from the correlation peak position (Pa1) is obtained. A search is made for a corresponding point (q) corresponding to the reference point (p) based on this position shift amount (d).
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: January 15, 2013
    Assignees: Azbil Corporation, National University Corporation Tohoku University
    Inventors: Takafumi Aoki, Takuma Shibahara, Hiroshi Nakajima, Koji Kobayashi, Atsushi Katsumata
  • Patent number: 8155395
    Abstract: An iris authentication apparatus includes an iris area extraction unit, registration pattern generating unit, collation pattern generating unit, and collation unit. The iris area extraction unit extracts iris areas from a sensed registration eyeball image and a sensed collation eyeball image. When the iris area extraction unit extracts an iris area from the registration eyeball image, the registration pattern generating unit generates a registration iris pattern image by performing polar coordinate transformation of an image in the extracted iris area. When the iris area extraction unit extracts an iris area from the collation eyeball image, the collation pattern generating unit generates a collation iris pattern image by performing polar coordinate transformation of an image in the extracted iris area.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: April 10, 2012
    Assignees: Yamatake Corporation, National University Corporation Tohoku University
    Inventors: Koji Kobayashi, Atsushi Katsumata, Hiroshi Nakajima, Kazuyuki Miyazawa, Koichi Ito, Takafumi Aoki
  • Publication number: 20090304266
    Abstract: A plurality of images (I, J) of an object (M) when viewed from different viewpoints are taken in. One of the images is set as a standard image (I), and the other image is set as a reference image (J). One-dimensional pixel data strings with a predetermined width (W) are cut out from the standard image (I) and the reference image (J) along epipolar lines (EP1, EP2) calculated from a camera parameter (CPR) and the reference point (p). Calculating a phase-only correlation function from the cut one-dimensional pixel data strings will obtain a correlation peak position (Pa1). A positional shift amount (d) from the correlation peak position (Pa1) is obtained. A search is made for a corresponding point (q) corresponding to the reference point (p) based on this position shift amount (d).
    Type: Application
    Filed: November 9, 2007
    Publication date: December 10, 2009
    Inventors: Takafumi Aoki, Takuma Shibahara, Hiroshi Nakajima, Koji Kobayashi, Atsushi Katsumata
  • Patent number: 7191201
    Abstract: An arithmetic processing apparatus includes a first data storage unit, two-dimensional arithmetic unit, and main control unit. The first data storage unit stores data to be processed. The two-dimensional arithmetic unit performs two-dimensional operation. The main control unit controls the two-dimensional arithmetic unit. The two-dimensional arithmetic unit includes an input address calculation unit which calculates the addresses of a set of input data necessary for a designated type of operation in the first data storage unit in accordance with an execution start instruction which designates the type of operation and a parameter from the main control unit, and an arithmetic execution unit which performs the designated type of operation for the set of input data which are stored at the calculated addresses in the first data storage unit.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: March 13, 2007
    Assignee: Yamatake Corporation
    Inventors: Makoto Morikawa, Atsushi Katsumata, Koji Kobayashi
  • Publication number: 20070025598
    Abstract: An iris authentication apparatus includes an iris area extraction unit, registration pattern generating unit, collation pattern generating unit, and collation unit. The iris area extraction unit extracts iris areas from a sensed registration eyeball image and a sensed collation eyeball image. When the iris area extraction unit extracts an iris area from the registration eyeball image, the registration pattern generating unit generates a registration iris pattern image by performing polar coordinate transformation of an image in the extracted iris area. When the iris area extraction unit extracts an iris area from the collation eyeball image, the collation pattern generating unit generates a collation iris pattern image by performing polar coordinate transformation of an image in the extracted iris area.
    Type: Application
    Filed: July 28, 2006
    Publication date: February 1, 2007
    Inventors: Koji Kobayashi, Atsushi Katsumata, Hiroshi Nakajima, Kazuyuki Miyazawa, Koichi Ito, Takafumi Aoki
  • Publication number: 20060210118
    Abstract: A personal identification apparatus includes an image sensing device, collation determination circuit, and recognition unit. The image sensing device senses at least part of the face of an identification target. The collation determination circuit collates image pattern information output from the image sensing device with registered pattern information of at least part of the face and outputs an authentication result. The recognition unit causes the identification target to recognize that at least part of the face is located in the focus range of the image sensing device. The recognition unit includes a point source, and a light-shielding member. The light-shielding member is arranged between the point source and the identification target to make the point source invisible or visible from the identification target only when at least part of the face is located in the focus range of the image sensing device and make the point source visible or invisible at another portion.
    Type: Application
    Filed: February 28, 2006
    Publication date: September 21, 2006
    Inventors: Koji Kobayashi, Atsushi Katsumata, Kosaku Tohda
  • Patent number: 6936465
    Abstract: A plasmid vector having components (D1), (D2), and (D3) enables the efficient integration of foreign DNA into host cells. The components are (D1) an integrase gene, (D2) a segment of DNA forming a region for controlling the expression of the integrase gene, and (D3) a segment of DNA serving as an integrase recognition region when integrase catalyzes the integration reaction.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: August 30, 2005
    Assignee: Nippon Institute for Biological Science
    Inventors: Atsushi Katsumata, Sumio Hoshi, Takeshi Ihara, Susumu Ueda
  • Publication number: 20040019621
    Abstract: An arithmetic processing apparatus includes a first data storage unit, two-dimensional arithmetic unit, and main control unit. The first data storage unit stores data to be processed. The two-dimensional arithmetic unit performs two-dimensional operation. The main control unit controls the two-dimensional arithmetic unit. The two-dimensional arithmetic unit includes an input address calculation unit which calculates the addresses of a set of input data necessary for a designated type of operation in the first data storage unit in accordance with an execution start instruction which designates the type of operation and a parameter from the main control unit, and an arithmetic execution unit which performs the designated type of operation for the set of input data which are stored at the calculated addresses in the first data storage unit.
    Type: Application
    Filed: August 4, 2003
    Publication date: January 29, 2004
    Inventors: Makoto Morikawa, Atsushi Katsumata, Koji Kobayashi