Patents Assigned to European Electronic Systems Limited
  • Calibration method for an optical measuring system employing reference grids in a series of reference planes
    Patent number: 4670659
    Abstract: The invention proposes an electro-optical measurement system to be used to measure the width and possibly also the thickness of a strip 14 being rolled. The strip is imaged onto an electro-optical transducer each of which views the whole width of the strip. To compensate for inaccuracies resulting from the imaging system, a calibration of the imaging system is effected by means of a grid of known dimensions. The calibration results are recorded during a setting up process and used by a digital or analogue computer to correct any measurements taken by the imaging system during operation. There is also disclosed an improved technique for edge detection and for processing video data in real time.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: June 2, 1987
    Assignee: European Electronic Systems Limited
    Inventor: Peter W. Loose
  • Optical width measuring system using two cameras
    Patent number: 4490617
    Abstract: The invention proposes an electro-optical measurement system to be used to measure the width and possibly also the thickness of a strip 14 being rolled. The strip is imaged onto an electro-optical transducer each of which views the whole width of the strip. To compensate for inaccuracies resulting from the imaging system, a calibration of the imaging system is effected by means of a grid of known dimensions. The calibration results are recorded during a setting up process and used by a digital or analogue computer to correct any measurements taken by the imaging system during operation. There is also disclosed an improved technique for edge detection and for processing video data in real time.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: December 25, 1984
    Assignee: European Electronic Systems Limited
    Inventor: Peter W. Loose