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Calibration method for a visual sensor

  • US 5,329,469 A
  • Filed: 01/24/1992
  • Issued: 07/12/1994
  • Est. Priority Date: 05/30/1990
  • Status: Expired due to Term
First Claim
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1. A visual sensor calibration method of calibrating a visual sensor in a robot system comprising the steps of:

  • providing a pattern plate including a plurality of dots, for obtaining a calibration, on an arm of a robot;

    obtaining, using a robot controller, a first calibration pattern data of said pattern plate at a position of said pattern plate on said robot arm, said first calibration pattern data being coordinate positions of each of said plurality of dots in said pattern plate;

    sending said first calibration pattern data of said pattern plate from said robot controller to a visual sensor controller;

    obtaining, using said visual sensor controller, a second calibration pattern data from an image of said pattern plate, said second calibration pattern data being coordinate positions of each of said plurality of dots in said image of said pattern plate; and

    obtaining, using said visual sensor controller, calibration data from said first calibration pattern data and said second calibration pattern data, to thereby calibrate a visual sensor.

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