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SYSTEM FOR AUTOMATED TEXT AND HALFTONE SEGMENTATION

  • US 20150356740A1
  • Filed: 06/05/2014
  • Published: 12/10/2015
  • Est. Priority Date: 06/05/2014
  • Status: Active Grant
First Claim
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1. A method for segmenting a text region from a pictorial region within a scanned image comprising:

  • scanning a document to obtain scanned image data representing the document;

    generating a binary image from the scanned image data, wherein the binary image comprises a two dimensional array of pixels and where a value of the pixel corresponds to the pixel being one of an ON pixel and an OFF pixel;

    identifying a connected component within the binary image, the connected component comprises a group of pixels enclosing a set of connected pixels having the same value;

    determining at least two of a size label, a solidity label, and run length label for the connected component, wherein each of the size label, the solidity label, and the run length label identifies the connected component as being either a text area or a non-text area, and where the connected component corresponds to a text component if the at least two of the size label, the solidity label, and the run length label identify the connected component as being a text component; and

    classifying the connected component as a text region within the scanned image when the connected component is identified as being a text component.

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