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Image-based character recognition

  • US 9,043,349 B1
  • Filed: 11/29/2012
  • Issued: 05/26/2015
  • Est. Priority Date: 11/29/2012
  • Status: Active Grant
First Claim
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1. A computer-implemented method, comprising:

  • under control of one or more computer systems configured with executable instructions,obtaining an image captured by at least one camera of a computing device;

    analyzing the image to locate a region of text in the image;

    selecting a subset of the image associated with the region of text;

    binarizing the subset of the image associated with the region of text to yield a binarized region;

    communicating the binarized region to a first text recognition engine and at least one second text recognition engine;

    recognizing the text of the binarized region with the first text recognition engine to yield first recognized text;

    recognizing, independently, the text of the binarized region with the at least one second text recognition engine to yield second recognized text, the first text recognition engine being different relative to the at least one second text recognition engine;

    determining a first confidence score for the first recognized text from the first text recognition engine and at least a second confidence score for the second recognized text from the at least one second text recognition engine; and

    applying a linear combination function of the first confidence score and the second confidence score to generate a consensus string of text comprising at least a portion of at least one of the first recognized text from the first text recognition engine or the second recognized text from the at least one second text recognition engine.

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