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Low resolution OCR for camera acquired documents

  • US 7,499,588 B2
  • Filed: 05/20/2004
  • Issued: 03/03/2009
  • Est. Priority Date: 05/20/2004
  • Status: Active Grant
First Claim
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1. An optical character recognition system that facilitates text recognition on a low resolution image, comprising:

  • at least one processor that executes;

    a layout analysis component that determines a set of text lines in the low resolution image, the layout analysis component further segments each text line in the set of lines into individual text words, wherein the layout analysis employs at least two linear filters at each location of the low resolution image;

    a character recognition component that segments the individual text words into one or more character portions and provides an observation on the most probable character for each of the one or more character portions; and

    a word recognizer that employs dynamic programming mechanisms to ascertain words based upon a series of observations from the character recognition component.

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