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Image processing device and method for identifying an input image, and copier scanner and printer including same

  • US 5,845,008 A
  • Filed: 01/20/1995
  • Issued: 12/01/1998
  • Est. Priority Date: 01/20/1994
  • Status: Expired due to Term
First Claim
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1. An image processing device to detect a specified reference pattern, comprising:

  • a pattern detection device to detect a potential pattern within an image data by a rough search which matches a gradated image obtained by reducing a resolution of said image data against a gradated image of said specified reference pattern, said potential pattern being a potential match for said specified reference pattern which is predetermined;

    a pattern extracting device to extract said detected potential pattern from said image data; and

    a pattern matching device to match said extracted potential pattern with said specified reference pattern;

    wherein said specified reference pattern comprises a number of cells having a characteristic.

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