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METHOD OF PATTERN RECOGNITION USING NOISE REDUCTION UNCERTAINTY

  • US 20080281591A1
  • Filed: 07/25/2008
  • Published: 11/13/2008
  • Est. Priority Date: 05/20/2002
  • Status: Active Grant
First Claim
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1. A method of recognizing pattern states from a noisy signal, the method comprising:

  • removing noise from a representation of a portion of the noisy signal to produce a representation of a portion of a cleaned signal by applying a correction vector for a mixture component;

    identifying an uncertainty associated with removing the noise by applying a variance for a prior probability distribution of a clean signal and a variance associated with selecting the correction vector for the mixture component to a function;

    using the uncertainty to adjust a probability distribution to form a modified probability distribution for the mixture component; and

    applying the representation of a portion of the cleaned signal to the modified probability distribution to decode a pattern state.

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