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Methods and systems for discriminating bands in scalograms

  • US 8,462,321 B2
  • Filed: 10/15/2012
  • Issued: 06/11/2013
  • Est. Priority Date: 06/30/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a light intensity signal indicative of light attenuated by body tissue of a subject;

    performing, using a processor, a wavelet transform based at least in part on the light intensity signal;

    generating, using the processor, a scalogram based at least in part on the wavelet transform of the light intensity signal;

    identifying, using the processor, first and second candidate bands in the scalogram;

    comparing, using the processor, at least one feature of the first and second bands;

    identifying, using the processor and based on the comparison, one of the first and second candidate bands as a band not of interest;

    discriminating, using the processor, the band not of interest; and

    calculating, using a processor, a physiological parameter of the subject based at least in part on the scalogram.

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