3D physiological detection system and operating method thereof
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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Abstract
A physiological detection system including an image sensor, a converting unit, a retrieving unit and a processing unit is provided. The image sensor includes a plurality of pixels respectively configured to output a PPG signal. The converting unit is configured to convert a plurality of PPG signals of a plurality of pixels regions to a plurality of frequency domain signals. The retrieving unit is configured to respectively retrieve a spectral energy of the frequency domain signals corresponding to each of the pixel regions. The processing unit is configured to construct a 3D energy distribution according to the spectral energies.
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Citations
8 Claims
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1. A physiological detection system comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification