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Methods and apparatus for generating signatures

  • US 8,489,884 B2
  • Filed: 06/24/2010
  • Issued: 07/16/2013
  • Est. Priority Date: 08/18/2004
  • Status: Active Grant
First Claim
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1. A method for generating signatures, comprising:

  • identifying a first plurality of filtered values by performing a wavelet transform on a first frame of media samples;

    determining a first energy value based on a first portion of the first plurality of filtered values;

    determining a second energy value based on a second portion of the first plurality of filtered values;

    determining a first descriptor of the first frame of media samples based on a comparison of the first energy value and the second energy value;

    generating, via a processor, a first signature based on the first descriptor;

    determining a second descriptor of a second frame of media samples; and

    generating a second signature based on the second descriptor.

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