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Non-touch optical detection of vital signs from amplified visual variations of reduced images

  • US 9,495,744 B2
  • Filed: 08/11/2014
  • Issued: 11/15/2016
  • Est. Priority Date: 07/04/2014
  • Status: Active Grant
First Claim
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1. An apparatus of motion amplification to communicate biological vital signs, the apparatus comprising:

  • a cropper that is operable to receive at least two images and crop the image to exclude a border area of the images, generating at least two cropped images;

    a skin-pixel-identifier that is operably coupled to the cropper and that identifies pixel values that are representative of the skin in at least two cropped images;

    a first frequency filter that is operably coupled to the skin-pixel-identifier and that applies a frequency filter to output of the skin-pixel-identifier;

    a regional facial clusterial module that is operably coupled to the first frequency filter and that applies spatial clustering to the output of the first frequency filter;

    a second frequency filter that is operably coupled to the regional facial clusterial module and that is applied to the output of the regional facial clusterial module;

    a temporal-variation identifier that is operably coupled to the second frequency filter and that identifies temporal variation of the output of the second frequency filter;

    a vital-sign generator that is operably coupled to the temporal-variation identifier that generates at least one vital sign from the temporal variation; and

    a display device that is operably coupled to the vital-sign generator that is operable to display the at least one vital sign.

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