Patents by Inventor Thapanapong RUKKANCHANUNT

Thapanapong RUKKANCHANUNT 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).

  • Camera calibration information acquisition device, image processing device, camera calibration information acquisition method, and recording medium
    Patent number: 11758110
    Abstract: A camera calibration information acquisition device acquires captured images of a camera calibration target from two or more cameras, detects, from each image, a coordinate of a feature point in the image, calculates—an internal parameter for each camera by using the feature point, calculates, for each camera, a magnitude of error in the coordinate of the feature point, calculates a value for an external parameter of the cameras by using the magnitude of the error, the coordinate of the feature point, and an error function set so that a penalty for error in calculating the external parameter decreases as the magnitude of the error in the coordinate of the feature point in the image increases.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: September 12, 2023
    Assignees: NEC CORPORATION, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Takashi Shibata, Masatoshi Okutomi, Masayuki Tanaka, Thapanapong Rukkanchanunt
  • CAMERA CALIBRATION INFORMATION ACQUISITION DEVICE, IMAGE PROCESSING DEVICE, CAMERA CALIBRATION INFORMATION ACQUISITION METHOD, AND RECORDING MEDIUM
    Publication number: 20220132092
    Abstract: A camera calibration information acquisition device acquires captured images of a camera calibration target from two or more cameras, detects, from each image, a coordinate of a feature point in the image, calculates—an internal parameter for each camera by using the feature point, calculates, for each camera, a magnitude of error in the coordinate of the feature point, calculates a value for an external parameter of the cameras by using the magnitude of the error, the coordinate of the feature point, and an error function set so that a penalty for error in calculating the external parameter decreases as the magnitude of the error in the coordinate of the feature point in the image increases.
    Type: Application
    Filed: February 27, 2020
    Publication date: April 28, 2022
    Applicants: NEC CORPORATION, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Takashi SHIBATA, Masatoshi OKUTOMI, Masayuki TANAKA, Thapanapong RUKKANCHANUNT