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OCR Matrix extractor

  • US 4,403,340 A
  • Filed: 01/06/1981
  • Issued: 09/06/1983
  • Est. Priority Date: 01/06/1981
  • Status: Expired due to Term
First Claim
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1. In the processing of scanned images for character recognition, a method for isolating areas of the scanned medium for recognition processing comprising the steps of:

  • storing representations of said scanned images in a memory;

    scanning said memory in a first direction so as to detect the end of a packet of data in said memory;

    sensing the location of said end of said packet in said memory;

    back-scanning said memory through said packet in a second direction, opposite to said first direction so as to detect the end of said packet in said second direction;

    recording the extent of said packet in memory in the direction perpendicular to said first and second directions during said back-scanning;

    sensing the location of the end of said packet in said second direction;

    whereby data in memory is isolated which can be removed to recognition processing.

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