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3D physiological detection system and operating method thereof

  • US 10,335,046 B2
  • Filed: 09/08/2015
  • Issued: 07/02/2019
  • Est. Priority Date: 12/23/2014
  • Status: Active Grant
First Claim
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1. A physiological detection system comprising:

  • an image sensor comprising a plurality of pixels each configured to output a PPG signal;

    a converting unit configured to convert the PPG signal of each of a plurality of pixel regions of the image sensor to a frequency domain signal thereby generating a plurality of frequency domain signals each corresponding to one pixel region, wherein each pixel region comprises at least one pixel of the image sensor;

    a retrieving unit configured to respectively retrieve a spectral energy value of the frequency domain signals corresponding to each of the pixel regions; and

    a processing unit configured to construct a three dimensional energy distribution of the spectral energy values, each spectral energy value corresponding to one of the pixel regions, by distributing the spectral energy values in a two dimensional space of the pixel regions as the three dimensional energy distribution that has an energy value corresponding to each of the pixel regions.

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