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