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Method and system for extraction and detection of physiological features

  • US 5,921,937 A
  • Filed: 07/21/1998
  • Issued: 07/13/1999
  • Est. Priority Date: 03/25/1997
  • Status: Expired due to Fees
First Claim
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1. A method of extracting features from multichannel test data, said test data obtained from a physiological sensor suite, said method comprising the steps of:

  • (a) extracting feature-absent truth data containing physiological information from said sensor suite;

    (b) pre-processing said feature-absent truth data;

    (c) further processing said pre-processed data to obtain the parameters of a multichannel model to represent a feature-absent condition associated with said pre-processed data;

    (d) forming a feature-absent whitening filter using said parameters of said multichannel model;

    (e) extracting said test data containing physiological information from said sensor suite;

    (f) pre-processing said test data; and

    (g) processing said pre-processed test data with said feature-absent whitening filter to produce an output residual largely containing only white noise and a feature of interest.

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