• US 20130096439A1
  • Filed: 07/31/2012
  • Published: 04/18/2013
  • Est. Priority Date: 10/14/2011
  • Status: Abandoned Application
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First Claim
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1. A method for contact-free heart rate measurement, comprising:

  • capturing a pattern information;

    judging at least one pixel being a skin-like point in the pattern information to output a flag value, and to obtain a color value corresponding to the pixel in the pattern information;

    determining the region of at least one target to be measured from the skin-like points to obtain a pixel information of the at least one target;

    calculating statistics on targets in a single picture in the pattern information to obtain at least one color value of at least one target region;

    obtaining a motion track of at least one target according to a space relation or appearance similarity between the at least one target region at multiple time points;

    taking statistics on the pixel information at multiple time points, to transform the pixel information into frequency domain to obtain signal distribution bands and magnitude thereof; and

    calculating a heart rate represented by a band according to a time interval between adjacent pictures in the pattern information.

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