Methods of non-touch optical detection of vital signs from multiple filters
First Claim
Patent Images
1. A method of displaying a biological vital sign, the method comprising:
- identifying pixel values of at least two images in a first location in a memory that are representative of skin of an animal, resulting in identified pixel values that are stored in a second location the memory;
applying a first frequency filter to the identified pixel values that are stored in the second location of the memory, generating frequency filtered identified pixel values of the skin that are stored in a third location of the memory;
applying spatial clustering to the frequency filtered identified pixel values of the skin that are stored in the third location of the memory, yielding spatial clustered frequency filtered identified pixel values of the skin that are stored in a fourth location of the memory;
applying a second frequency filter to the spatial clustered frequency filtered identified pixel values of skin that are stored in the fourth location of the memory, yielding a temporal variation that is stored in a fifth location in the memory;
generating the biological vital sign in a sixth location of the memory from the temporal variation; and
displaying the biological vital sign from sixth location of the memory.
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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 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. A method of displaying a biological vital sign, the method comprising:
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identifying pixel values of at least two images in a first location in a memory that are representative of skin of an animal, resulting in identified pixel values that are stored in a second location the memory; applying a first frequency filter to the identified pixel values that are stored in the second location of the memory, generating frequency filtered identified pixel values of the skin that are stored in a third location of the memory; applying spatial clustering to the frequency filtered identified pixel values of the skin that are stored in the third location of the memory, yielding spatial clustered frequency filtered identified pixel values of the skin that are stored in a fourth location of the memory; applying a second frequency filter to the spatial clustered frequency filtered identified pixel values of skin that are stored in the fourth location of the memory, yielding a temporal variation that is stored in a fifth location in the memory; generating the biological vital sign in a sixth location of the memory from the temporal variation; and displaying the biological vital sign from sixth location of the memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of displaying a biological vital sign, the method comprising:
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identifying pixel values of at least two images that are representative of skin, resulting in identified pixel values; applying a first frequency filter to the identified pixel values, yielding frequency filtered identified pixel values of the skin; applying spatial clustering to the frequency filtered identified pixel values of the skin, yielding spatial clustered frequency filtered identified pixel values of the skin; applying a second frequency filter to the spatial clustered frequency filtered identified pixel values of skin, yielding a temporal variation; generating the biological vital sign from the temporal variation; and displaying the biological vital sign. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification