Patents by Inventor Isao TOKUHARA

Isao TOKUHARA 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).

  • Image measuring method and apparatus
    Patent number: 11257205
    Abstract: An image measuring method performed with an image measuring device measuring a dimension of a measured object from an image of the measured object captured by an image capturer. The method executes a standard reference object measurement measuring a dimension of the standard reference object with the image measuring device; a standard reference dimension input inputting a dimension of the standard reference object specified by a device other than the image measuring device; a preset value calculation calculating a preset value from the dimension of the measured standard reference object and from a dimension of the standard reference object measured by a predetermined measurement tool; a measurement measuring a dimension of a measured object other than the standard reference object using the image measuring device; and a correction correcting the dimension of the measured object other than the standard reference object measured by the image measuring device.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: February 22, 2022
    Assignee: MITUTOYO CORPORATION
    Inventors: Gyokubu Cho, Koichi Komatsu, Akira Takada, Hiroyuki Yoshida, Takashi Hanamura, Takuho Maeda, Makoto Kaieda, Isao Tokuhara
  • Edge detection bias correction value calculation method, edge detection bias correction method, and edge detection bias correcting program
    Patent number: 10102631
    Abstract: A distance in a scanning direction between a first set of edges which face each other and exhibit an opposite change between light and dark is measured by an image measuring machine, and a bias correction value is calculated based on a difference between a measured value and a true value. Using the bias correction value, detection point correction values, which are correction values in various directions of edge detection points detected by a scan of a measured object using the image measuring machine, are calculated; a correction amount used in correction of the edge detection points is specified based on the detection point correction value in each direction; and the edge detection points are corrected using the correction amount.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: October 16, 2018
    Assignee: MITUTOYO CORPORATION
    Inventors: Hiroyuki Yoshida, Akira Takada, Makoto Kaieda, Gyokubu Cho, Koichi Komatsu, Hidemitsu Asano, Takashi Hanamura, Takuho Maeda, Isao Tokuhara
  • IMAGE MEASURING METHOD AND IMAGE MEASURING DEVICE
    Publication number: 20170178315
    Abstract: An image measuring method performed with an image measuring device measuring a dimension of a measured object from an image of the measured object captured by an image capturer. The method executes a standard reference object measurement measuring a dimension of the standard reference object with the image measuring device; a standard reference dimension input inputting a dimension of the standard reference object specified by a device other than the image measuring device; a preset value calculation calculating a preset value from the dimension of the measured standard reference object and from a dimension of the standard reference object measured by a predetermined measurement tool; a measurement measuring a dimension of a measured object other than the standard reference object using the image measuring device; and a correction correcting the dimension of the measured object other than the standard reference object measured by the image measuring device.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 22, 2017
    Applicant: MITUTOYO CORPORATION
    Inventors: Gyokubu CHO, Koichi KOMATSU, Akira TAKADA, Hiroyuki YOSHIDA, Takashi HANAMURA, Takuho MAEDA, Makoto KAIEDA, Isao TOKUHARA
  • EDGE DETECTION BIAS CORRECTION VALUE CALCULATION METHOD, EDGE DETECTION BIAS CORRECTION METHOD, AND EDGE DETECTION BIAS CORRECTING PROGRAM
    Publication number: 20160295207
    Abstract: A distance in a scanning direction between a first set of edges which face each other and exhibit an opposite change between light and dark is measured by an image measuring machine, and a bias correction value is calculated based on a difference between a measured value and a true value. Using the bias correction value, detection point correction values, which are correction values in various directions of edge detection points detected by a scan of a measured object using the image measuring machine, are calculated; a correction amount used in correction of the edge detection points is specified based on the detection point correction value in each direction; and the edge detection points are corrected using the correction amount.
    Type: Application
    Filed: March 30, 2016
    Publication date: October 6, 2016
    Applicant: MITUTOYO CORPORATION
    Inventors: Hiroyuki YOSHIDA, Akira TAKADA, Makoto KAIEDA, Gyokubu CHO, Koichi KOMATSU, Hidemitsu ASANO, Takashi HANAMURA, Takuho MAEDA, Isao TOKUHARA