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Image retrieval and authentication using enhanced expectation maximization (EEM)

  • US 9,158,791 B2
  • Filed: 03/08/2012
  • Issued: 10/13/2015
  • Est. Priority Date: 03/08/2012
  • Status: Expired due to Fees
First Claim
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1. A method for employing an Enhanced Expectation Maximization (EEM) to determine data uniqueness and similarity, the method comprising:

  • receiving data to be analyzed;

    employing, a realization of uniform distribution in an initialization of the EEM on the received data to prevent a convergence to a local maximum and to allow another convergence to a global maximum;

    employing a positive perturbation scheme to avoid boundary overflow;

    generating a signature vector for the analyzed data andemploying the signature vector to determine one of uniqueness and similarity of the analyzed data to other data based on a similarity of the signature vector to signature vectors of the other data.

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