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System and method for improved optical character recognition for automated set-top box testing

  • US 9,516,304 B2
  • Filed: 12/22/2011
  • Issued: 12/06/2016
  • Est. Priority Date: 11/26/2010
  • Status: Active Grant
First Claim
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1. A test system comprising:

  • a processor to;

    obtain a video frame, comprising images in sequence, from a device under test;

    select a filter configuration for at least one filter to test;

    filter an image included in the images in sequence using the filter configuration to generate a filtered image;

    extract text from the filtered image using an optical character recognition (OCR) engine;

    determine a filter performance for the image based on comparing the text extracted from the filtered image to an expected result;

    when the filter performance is a positive result, filter another image included in the images in sequence using the filter configuration;

    when the filter performance is a negative result, repeatedly select a different filter configuration and filter the image using the different filter configuration until the positive result is determined; and

    determine a suitable filter configuration when the filter performance for each image in the images in sequence is positive for a same filter configuration.

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