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Optical character recognition (OCR) of seat belt buckle printing

Optical character recognition (OCR) of seat belt buckle printing

Machine vision equipment recognizes printed characters on seat belt buckles.

One of the largest obstacles to overcome in OCR inspection is choosing the correct lighting to accentuate the printed characters. KEYENCE supplies lighting and lenses in order to provide a complete solution to our customers. KEYENCE's original OCR function is also capable of stable inspection under conditions of varying print density, varying character size, and tilted characters.


Printing on seat belt buckles was previously inspected visually and occasional mistakes resulted in buckles of the wrong type entering the process. Since vehicle seat belts are safety components, oversights such as the installation of wrong seat belt buckles should never happen. Using machine vision equipment for this application makes it possible to inspect all parts reliably and prevents wrong parts from entering the process.

Applicable Product Catalogue


  • XG-8000 series - Customizable Vision System

    The XG Series contains high level vision system technology to provide flexibility and power to solve a wide range of applications.

  • XG-7000 series - Customizable Vision System

    The XG Series offers standard programming directly with the controller or advanced programming using the optional Vision Editor PC software.

  • CV-X series - Intuitive Vision System

    State-of-the-art algorithms are available for anyone.
    Quick and easy setup.
    One system can handle all applications due to the wide variety of supporting products.

  • CV-5000 series - Intuitive Vision System

    The CV-5000 Series has the largest number of camera types for its class, letting you select the optimum camera for a wide range of applications.

  • CV-3000 series - Intuitive Vision System

    Providing the ultimate flexibility with a wide variety of camera choices using the industry's highest-performance image processing engine.

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