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Device and method for performing optical character recognition

  • US 10,503,994 B2
  • Filed: 11/19/2018
  • Issued: 12/10/2019
  • Est. Priority Date: 07/10/2014
  • Status: Active Grant
First Claim
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1. A method of performing character isolation in an optical character recognition process, the method comprising:

  • receiving image data representing one or more character columns;

    determining a respective number of black pixels in each column in the one or more character columns of the image data;

    defining a vertical separation threshold which is a maximum number of black pixels in a column;

    dividing the character columns into different pixel groups and groups of excluded columns by excluding any column with the respective number of black pixels below the vertical separation threshold; and

    identifying the pixel group representing a left most character column in the image data, further comprising;

    identifying a left most group of excluded columns;

    determining that a pixel group immediately to a right side of the left most group of excluded columns is below a minimum digit width threshold; and

    excluding the pixel group immediately to the right side of the left most group of excluded columns.

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