Patents by Inventor Tetsuro Tokunaga

Tetsuro Tokunaga 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: 11398049
    Abstract: To identify and track a plurality of objects. An object tracking device 1 includes a frame acquisition unit 31 for acquiring one set of frame data 11 included in moving image data that captures a space where a plurality of objects are present; a distance acquisition unit 32 for acquiring measurement data 12 from measurement of three-dimensional coordinates of points configuring the objects in the space where the objects are present; an object position detection unit 33 for detecting a two-dimensional position of each of the objects from the frame data 11 on the basis of comparison with template data of each of the objects; an object distance detection unit 34 for detecting a plurality of three-dimensional positions of the objects from the measurement data 12; and an associating unit 35 for associating each two-dimensional position from the object position detection unit 33 with the nearest three-dimensional position among the three-dimensional positions from the object distance detection unit 34.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: July 26, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yoko Ishii, Kota Hidaka, Yoshihide Tonomura, Tetsuro Tokunaga, Yuichi Hiroi
  • Patent number: 11257224
    Abstract: There is provided an object tracking apparatus that realizes robust object detection and tracking even for movement fluctuation and observation noise, an object tracking method and a computer program. An object cracking apparatus 1 is an apparatus tracking an object in video, the object tracking apparatus 1 including: a deep learning discriminator 2 which is a discriminator by deep learning; and a particle filter function unit 3 tracking an object by applying a multi-channel feature value of video including feature values by the deep learning discriminator 2 to likelihood evaluation by a particle filter, according to a distance between position information about the multi-channel feature value and position information about each particle.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: February 22, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yuichi Hiroi, Yoko Ishii, Tetsuro Tokunaga, Yoshihide Tonomura, Kota Hidaka
  • Publication number: 20210209793
    Abstract: To identify and track a plurality of objects. An object tracking device 1 includes a frame acquisition unit 31 for acquiring one set of frame data 11 included in moving image data that captures a space where a plurality of objects are present; a distance acquisition unit 32 for acquiring measurement data 12 from measurement of three-dimensional coordinates of points configuring the objects in the space where the objects are present; an object position detection unit 33 for detecting a two-dimensional position of each of the objects from the frame data 11 on the basis of comparison with template data of each of the objects; an object distance detection unit 34 for detecting a plurality of three-dimensional positions of the objects from the measurement data 12; and an associating unit 35 for associating each two-dimensional position from the object position detection unit 33 with the nearest three-dimensional position among the three-dimensional positions from the object distance detection unit 34.
    Type: Application
    Filed: May 20, 2019
    Publication date: July 8, 2021
    Inventors: Yoko ISHII, Kota HIDAKA, Yoshihide TONOMURA, Tetsuro TOKUNAGA, Yuichi HIROI
  • Publication number: 20210042935
    Abstract: There is provided an object tracking apparatus that realizes robust object detection and tracking even for movement fluctuation and observation noise, an object tracking method and a computer program. An object cracking apparatus 1 is an apparatus tracking an object in video, the object tracking apparatus 1 including: a deep learning discriminator 2 which is a discriminator by deep learning; and a particle filter function unit 3 tracking an object by applying a multi-channel feature value of video including feature values by the deep learning discriminator 2 to likelihood evaluation by a particle filter, according to a distance between position information about the multi-channel feature value and position information about each particle.
    Type: Application
    Filed: March 4, 2019
    Publication date: February 11, 2021
    Inventors: Yuichi HIROI, Yoko ISHII, Tetsuro TOKUNAGA, Yoshihide TONOMURA, Kota HIDAKA
  • Patent number: 10275398
    Abstract: A content display device includes a content acquisition unit configured to acquire content data including a script, a storage unit configured to expand the content data into tree-structure data and store the tree-structure data, a determination unit configured to determine from the tree-structure data a sub-tree corresponding to a portion of the digital content to be displayed by each of the plurality of child browsers, and transmit the sub-tree to the corresponding child browser, an execution unit configured to execute the script, and an access unit configured to, when the execution unit executes a process to access the tree-structure data, notify the child browser holding a sub-tree to be accessed of the process and cause the child browser to execute a process, and configured to, when an occurrence notice of an event is received from the child browser, cause the execution unit to execute a process corresponding to the event.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: April 30, 2019
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kiyoshi Tanaka, Yasuhiko Miyazaki, Tetsuro Tokunaga, Mutsuhiro Nakashige
  • Publication number: 20150227566
    Abstract: A content display device includes a content acquisition unit configured to acquire content data including a script, a storage unit configured to expand the content data into tree-structure data and store the tree-structure data, a determination unit configured to determine from the tree-structure data a sub-tree corresponding to a portion of the digital content to be displayed by each of the plurality of child browsers, and transmit the sub-tree to the corresponding child browser, an execution unit configured to execute the script, and an access unit configured to, when the execution unit executes a process to access the tree-structure data, notify the child browser holding a sub-tree to be accessed of the process and cause the child browser to execute a process, and configured to, when an occurrence notice of an event is received from the child browser, cause the execution unit to execute a process corresponding to the event.
    Type: Application
    Filed: September 10, 2013
    Publication date: August 13, 2015
    Inventors: Kiyoshi Tanaka, Yasuhiko Miyazaki, Tetsuro Tokunaga, Mutsuhiro Nakashige