Non-touch optical detection of vital signs from amplified visual variations of reduced images of skin
First Claim
Patent Images
1. An apparatus of motion amplification to communicate biological vital signs, the apparatus comprising:
- a cropper module 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-identification module that is operably coupled to the cropper module and that identifies pixel values that are representative of the skin in at least two cropped images;
a first frequency filter module that is operably coupled to the skin-pixel-identifier and that includes a first frequency filter and that applies the first frequency filter to output of the skin-pixel-identifier;
a regional facial clusterial module that is operably coupled to the first frequency filter module and that applies spatial clustering to the output of the first frequency filter module;
a second frequency filter module that is operably coupled to the regional facial clusterial module and that includes a second frequency filter and that applies the second frequency filter to output of the regional facial clusterial module, generating a temporal variation;
a vital-sign generator that is operably coupled to the second frequency filter module 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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Abstract
A microprocessor is operably coupled to a camera from which patient vital signs of reduced images of skin are determined. A temporal variation of reduced images of skin from the camera is generated from multiple filters and then amplified from which the patient vital sign, such as heart rate or respiratory rate, can be determined and then displayed or stored.
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Citations
20 Claims
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1. An apparatus of motion amplification to communicate biological vital signs, the apparatus comprising:
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a cropper module 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-identification module that is operably coupled to the cropper module and that identifies pixel values that are representative of the skin in at least two cropped images; a first frequency filter module that is operably coupled to the skin-pixel-identifier and that includes a first frequency filter and that applies the first frequency filter to output of the skin-pixel-identifier; a regional facial clusterial module that is operably coupled to the first frequency filter module and that applies spatial clustering to the output of the first frequency filter module; a second frequency filter module that is operably coupled to the regional facial clusterial module and that includes a second frequency filter and that applies the second frequency filter to output of the regional facial clusterial module, generating a temporal variation; a vital-sign generator that is operably coupled to the second frequency filter module 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus of motion amplification to communicate biological vital signs, the apparatus comprising:
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a cropper module that is operable to receive at least two images and operable to crop the images to exclude a border area of the images, generating at least two cropped images; a first frequency filter module that includes a first frequency filter and that applies the first frequency filter to the at least two cropped images; a regional facial clusterial module that is operably coupled to the first frequency filter module and that applies spatial clustering to output of the first frequency filter module; a second frequency filter module that is operably to the regional facial clusterial module and that includes a second frequency filter and that applies the second frequency filter to output of the regional facial clusterial module, generating a temporal variation; a vital-sign generator that is operably coupled to the second frequency filter module 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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification