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Method and apparatus for caption detection

  • US 8,929,461 B2
  • Filed: 04/17/2007
  • Issued: 01/06/2015
  • Est. Priority Date: 04/17/2007
  • Status: Active Grant
First Claim
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1. A method comprising:

  • detecting a plurality of text boxes from a plurality of video frames, wherein detecting includesobtaining a first percentage of the plurality of text boxes whose locations associated with the plurality of the video frames fall within a location range,wherein the first percentage and the location range are regarded as acceptable if the first percentage is equal to or greater than a first determined value and if the location range is equal to or less than a second predetermined value, andobtaining a second percentage of the plurality of text boxes whose sizes fall within a size range,wherein the second percentage and the size range are regarded as acceptable if the second percentage is equal to or greater than a third predetermined value and if the size range is equal to or less than a fourth predetermined value;

    identifying a text box of the plurality of text boxes as a caption candidate if the first percentage, the location range, the second percentage, and the size range relating to the text box are acceptable; and

    selecting the identified text box as the caption candidate.

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