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Method and device for authenticating identify by means of fusion of multiple biological characteristics

  • US 10,346,602 B2
  • Filed: 03/29/2016
  • Issued: 07/09/2019
  • Est. Priority Date: 10/20/2015
  • Status: Active Grant
First Claim
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1. A method for authenticating an identity based on fusion of a plurality of biological characteristics, comprising:

  • collecting at least two types of biological characteristic identity information of a to-be-identified user;

    performing characteristic extraction on each type of the at least two types of biological characteristic identify information, to obtain sets of characteristic information, wherein there is a one-to-one correspondence between the sets of characteristic information and the at least two types of biological characteristic identify information;

    establishing characteristic matrixes based on the sets of characteristic information, wherein there is another one-to-one correspondence between the sets of characteristic information and the characteristic matrixes;

    performing normalization processing on each of the characteristic matrixes;

    performing dynamic weighting fusion on all of the normalized characteristic matrixes, to obtain a fused characteristic matrix;

    matching the fused characteristic matrix with a preset standard matrix, to obtain a matching score; and

    obtaining an identity identification result of the to-be-identified user based on a Bayesian decision model and the matching score;

    wherein the performing dynamic weighting fusion on all of the normalized characteristic matrixes to obtain a fused characteristic matrix comprises;

    allocating an initial weighting value to each of the normalized characteristic matrixes according to a preset weighting value allocation criteria, wherein a sum of all of the initial weighting values is equal to 1;

    calculating an integrity rate for each of the sets of characteristic information corresponding to the characteristic matrixes, wherein the integrity rate is a ratio of a quantity of elements in the set of characteristic information to a quantity of elements in the corresponding characteristic matrix;

    adjusting the initial weighting value of each of the normalized characteristic matrixes based on the integrity rates while ensuring a sum of all of the adjusted weighting values is equal to 1; and

    performing weighting fusion on all of the normalized characteristic matrixes based on the adjusted weighting values, to obtain the fused characteristic matrix.

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