Patents by Inventor Yasutaka Kawa

Yasutaka Kawa 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: 9341465
    Abstract: A dimension measuring apparatus is configured by: a movable stage; a measurement setting data storing section that holds feature amount information and measured position information; a low-magnification imaging section that photographs a workpiece with a low magnification; a workpiece detecting section that specifies a position and a posture of the workpiece in the low-magnification image based on the feature amount information; a stage controlling section that controls the movable stage 12 based on the specified location and posture such that the position to be measured of the workpiece stays within the high-magnification field of view; a high-magnification imaging section that photographs with a high magnification the position to be measured; an edge extracting section that extracts an edge of the position to be measured from the high-magnification image; and a dimension value calculating section that obtains a dimension value of the position to be measured.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: May 17, 2016
    Assignee: Keyence Corporation
    Inventor: Yasutaka Kawa
  • Patent number: 9329024
    Abstract: A dimension measuring apparatus is configured of: an imaging section that photographs a workpiece on the movable stage; a depth extending section that performs depth extension on a plurality of the workpiece images in different Z-directional positions in the movable stage, to generate a depth extended image; a master image displaying section that screen-displays as a master image the depth extended image obtained by photographing a master workpiece; a measured position information generating section that designates a position to be measured and a measuring method with respect to the master image, to generate measured position information; an edge extracting section that extracts an edge of the position to be measured from the depth extended image, obtained by photographing the workpiece, based on the measured position information; and a dimension value calculating section that obtains a dimension value of the position to be measured based on the extracted edge.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: May 3, 2016
    Assignee: Keyence Corporation
    Inventor: Yasutaka Kawa
  • Patent number: 8503757
    Abstract: Present invention is an image measurement device capable of easily identifying a degree of disagreement between contours for a plurality of workpieces, and including: an edge extraction unit that extracts an edge line from a workpiece image; an image comparison unit that compares the workpiece image with the previously held master image, an error calculation unit that calculates, based on the comparison result, an error indicating an amount of displacement between an edge position of the workpiece image and a position of the master image corresponding to this edge position; a statistical information calculation unit that calculates statistical information of the calculated error for a plurality of workpiece images and for each edge position; a statistical information display unit that displays the statistical information along the edge line extracted from the workpiece image or the master image in a display mode suitable for the values of the statistical information.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: August 6, 2013
    Assignee: Keyence Corporation
    Inventors: Takashi Naruse, Yasutaka Kawa, Hayato Oba
  • Publication number: 20120194673
    Abstract: A dimension measuring apparatus is configured of an imaging section that photographs a workpiece on the movable stage; a depth extending section that performs depth extension on a plurality of the workpiece images in different Z-directional positions in the movable stage, to generate a depth extended image; a master image displaying section that screen-displays as a master image the depth extended image obtained by photographing a master workpiece; a measured position information generating section that designates a position to be measured and a measuring method with respect to the master image, to generate measured position information; an edge extracting section that extracts an edge of the position to be measured from the depth extended image, obtained by photographing the workpiece, based on the measured position information; and a dimension value calculating section that obtains a dimension value of the position to be measured based on the extracted edge.
    Type: Application
    Filed: January 10, 2012
    Publication date: August 2, 2012
    Applicant: KEYENCE CORPORATION
    Inventor: Yasutaka Kawa
  • Publication number: 20120194672
    Abstract: A dimension measuring apparatus is configured by: a movable stage; a measurement setting data storing section that holds feature amount information and measured position information; a low-magnification imaging section that photographs a workpiece with a low magnification; a workpiece detecting section that specifies a position and a posture of the workpiece in the low-magnification image based on the feature amount information; a stage controlling section that controls the movable stage 12 based on the specified location and posture such that the position to be measured of the workpiece stays within the high-magnification field of view; a high-magnification imaging section that photographs with a high magnification the position to be measured; an edge extracting section that extracts an edge of the position to be measured from the high-magnification image; and a dimension value calculating section that obtains a dimension value of the position to be measured.
    Type: Application
    Filed: January 10, 2012
    Publication date: August 2, 2012
    Applicant: KEYENCE CORPORATION
    Inventor: Yasutaka Kawa
  • Publication number: 20120027289
    Abstract: Present invention is an image measurement device capable of easily identifying a degree of disagreement between contours for a plurality of workpieces, and including: an edge extraction unit that extracts an edge line from a workpiece image; an image comparison unit that compares the workpiece image with the previously held master image, an error calculation unit that calculates, based on the comparison result, an error indicating an amount of displacement between an edge position of the workpiece image and a position of the master image corresponding to this edge position; a statistical information calculation unit that calculates statistical information of the calculated error for a plurality of workpiece images and for each edge position; a statistical information display unit that displays the statistical information along the edge line extracted from the workpiece image or the master image in a display mode suitable for the values of the statistical information.
    Type: Application
    Filed: July 14, 2011
    Publication date: February 2, 2012
    Applicant: KEYENCE CORPORATION
    Inventors: Takashi Naruse, Yasutaka Kawa, Hayato Oba