Patents by Inventor Yuuki NAKADA

Yuuki NAKADA 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: 11115561
    Abstract: An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object; detect a second boundary between the object and the shadow of the object in the image information; and detect an inclination of the object in the image information from the first boundary and the second boundary detected by the processing circuitry.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: September 7, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hajime Tsukahara, Hiroki Shirado, Ayumu Hashimoto, Yuuki Nakada, Tomohiko Ono, Tatsuya Ozaki, Hiroshi Kubo, Yoshiaki Nagao, Kimiharu Yanagisawa, Masahiro Itoh
  • Patent number: 11102365
    Abstract: An edge detecting device includes processing circuitry. The processing circuitry is configured to acquire first color information and second color information in an image including a document region and a background region outside the document region. The first color information is color information of the background region and the second color information is color information of the document region. The processing circuitry is configured to detect a boundary between the background region and the document region from a change in color information between the first color information and the second color information.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: August 24, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiko Ono, Hajime Tsukahara, Hiroki Shirado, Ayumu Hashimoto, Yuuki Nakada, Tatsuya Ozaki, Hiroshi Kubo, Yoshiaki Nagao, Kimiharu Yanagisawa, Masahiro Itoh
  • Patent number: 11102375
    Abstract: A sheet reading apparatus includes a sheet table on which a sheet is placed, a conveyor configured to convey the sheet, a reading guide configured to guide the sheet conveyed by the conveyor, and a reading device configured to read a shadow of the sheet conveyed by the conveyor, for detection of an inclination of the sheet. The sheet reading apparatus further includes a transparent member disposed at a position on a reading line of the reading device. The position on the reading line is withdrawn from the sheet and adjacent to the reading guide.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: August 24, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiroshi Kubo, Kimiharu Yanagisawa, Hajime Tsukahara, Yoshiaki Nagao, Masahiro Itoh, Tatsuya Ozaki, Tomohiko Ono, Yuuki Nakada, Hiroki Shirado, Ayumu Hashimoto
  • Patent number: 11102364
    Abstract: An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object at detection positions in at least one of main-scanning and sub-scanning directions on an outline of the object; detect a second boundary between the object and the shadow of the object at detection positions in at least one of the main-scanning and sub-scanning directions on the outline of the object in the image information; detect a boundary group including detection results of the second boundary at the detection positions; and detect an inclination of the object in the image information from detection results of the first boundary, the second boundary, and the boundary group.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: August 24, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuuki Nakada, Hajime Tsukahara, Hiroki Shirado, Ayumu Hashimoto, Tomohiko Ono, Tatsuya Ozaki, Hiroshi Kubo, Yoshiaki Nagao, Kimiharu Yanagisawa, Masahiro Itoh
  • Patent number: 10951791
    Abstract: An image processing apparatus includes circuitry to: obtain a read image read from an image of a document output from an image reading device; detect an edge between a background area and a document area in the read image; sample a detection result of the edge at each first interval in a first direction to extract a first boundary point group including a plurality of boundary points; sample the detection result of the edge at each second interval in the first direction to extract a second boundary point group including a plurality of boundary points; determine a noise removal condition based on the first boundary point group; remove, from the second boundary point group, a boundary point satisfying the noise removal condition as noise; and calculate a linear equation approximating the second boundary point group from which the noise is removed.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: March 16, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Ayumu Hashimoto, Hajime Tsukahara, Hiroki Shirado, Yuuki Nakada, Tomohiko Ono, Tatsuya Ozaki, Hiroshi Kubo, Kimiharu Yanagisawa, Yoshiaki Nagao, Masahiro Itoh
  • Publication number: 20200336615
    Abstract: An edge detecting device includes processing circuitry. The processing circuitry is configured to acquire first color information and second color information in an image including a document region and a background region outside the document region. The first color information is color information of the background region and the second color information is color information of the document region. The processing circuitry is configured to detect a boundary between the background region and the document region from a change in color information between the first color information and the second color information.
    Type: Application
    Filed: April 7, 2020
    Publication date: October 22, 2020
    Inventors: Tomohiko ONO, Hajime TSUKAHARA, Hiroki SHIRADO, Ayumu HASHIMOTO, Yuuki NAKADA, Tatsuya OZAKI, Hiroshi KUBO, Yoshiaki NAGAO, Kimiharu YANAGISAWA, Masahiro ITOH
  • Publication number: 20200296255
    Abstract: An image processing apparatus includes circuitry to: obtain a read image read from an image of a document output from an image reading device; detect an edge between a background area and a document area in the read image; sample a detection result of the edge at each first interval in a first direction to extract a first boundary point group including a plurality of boundary points; sample the detection result of the edge at each second interval in the first direction to extract a second boundary point group including a plurality of boundary points; determine a noise removal condition based on the first boundary point group; remove, from the second boundary point group, a boundary point satisfying the noise removal condition as noise; and calculate a linear equation approximating the second boundary point group from which the noise is removed.
    Type: Application
    Filed: February 25, 2020
    Publication date: September 17, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: AYUMU HASHIMOTO, HAJIME TSUKAHARA, HIROKI SHIRADO, YUUKI NAKADA, TOMOHIKO ONO, TATSUYA OZAKI, HIROSHI KUBO, KIMIHARU YANAGISAWA, YOSHIAKI NAGAO, MASAHIRO ITOH
  • Publication number: 20200252513
    Abstract: An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object at detection positions in at least one of main-scanning and sub-scanning directions on an outline of the object; detect a second boundary between the object and the shadow of the object at detection positions in at least one of the main-scanning and sub-scanning directions on the outline of the object in the image information; detect a boundary group including detection results of the second boundary at the detection positions; and detect an inclination of the object in the image information from detection results of the first boundary, the second boundary, and the boundary group.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 6, 2020
    Inventors: Yuuki NAKADA, Hajime TSUKAHARA, Hiroki SHIRADO, Ayumu HASHIMOTO, Tomohiko ONO, Tatsuya OZAKI, Hiroshi KUBO, Yoshiaki NAGAO, Kimiharu YANAGISAWA, Masahiro ITOH
  • Publication number: 20200244837
    Abstract: An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object; detect a second boundary between the object and the shadow of the object in the image information; and detect an inclination of the object in the image information from the first boundary and the second boundary detected by the processing circuitry.
    Type: Application
    Filed: January 29, 2020
    Publication date: July 30, 2020
    Inventors: Hajime TSUKAHARA, Hiroki SHIRADO, Ayumu HASHIMOTO, Yuuki NAKADA, Tomohiko ONO, Tatsuya OZAKI, Hiroshi KUBO, Yoshiaki NAGAO, Kimiharu YANAGISAWA, Masahiro ITOH
  • Publication number: 20200137262
    Abstract: A sheet reading apparatus includes a sheet table on which a sheet is placed, a conveyor configured to convey the sheet, a reading guide configured to guide the sheet conveyed by the conveyor, and a reading device configured to read a shadow of the sheet conveyed by the conveyor, for detection of an inclination of the sheet. The sheet reading apparatus further includes a transparent member disposed at a position on a reading line of the reading device. The position on the reading line is withdrawn from the sheet and adjacent to the reading guide.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 30, 2020
    Inventors: Hiroshi KUBO, Kimiharu YANAGISAWA, Hajime TSUKAHARA, Yoshiaki NAGAO, Masahiro ITOH, Tatsuya OZAKI, Tomohiko ONO, Yuuki NAKADA, Hiroki SHIRADO, Ayumu HASHIMOTO
  • Patent number: 9457977
    Abstract: A gear unit 40 includes: a sprocket 32 including pins 31 provided on a periphery thereof and a final gear 42; and one or more transmission gears disposed between a drive motor 33 and the final gear 42. The pins 31 engage with feed holes provided at equal pitches in a carrier tape. A sensor 48 which detects an angle is provided to face a transmission gear, of the one or more transmission gears, of which a rotation ratio to the final gear 42 is 1:N (N is a positive integer).
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: October 4, 2016
    Assignees: PANASONIC CORPORATION, NIDEC COPAL ELECTRONICS CORPORATION
    Inventors: Satoshi Kawaguchi, Shigekazu Yoneyama, Tatsuo Yamamura, Kazunori Kanai, Yuuki Nakada, Kiyoshi Tanaka, Toshiaki Numata
  • Publication number: 20150305215
    Abstract: A gear unit 40 includes: a sprocket 32 including pins 31 provided on a periphery thereof and a final gear 42; and one or more transmission gears disposed between a drive motor 33 and the final gear 42. The pins 31 engage with feed holes provided at equal pitches in a carrier tape. A sensor 48 which detects an angle is provided to face a transmission gear, of the one or more transmission gears, of which a rotation ratio to the final gear 42 is 1:N (N is a positive integer).
    Type: Application
    Filed: June 17, 2013
    Publication date: October 22, 2015
    Inventors: Satoshi KAWAGUCHI, Shigekazu YONEYAMA, Tatsuo YAMAMURA, Kazunori KANAI, Yuuki NAKADA, Kiyoshi TANAKA, Toshiaki NUMATA