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US 2020/0268281 A1Published application
Systems and methods for video-based monitoring of vital signs
AssigneeCovidien LP
InventorsDominique Jacquel, Paul Stanley Addison, David Foo
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Abstract
The present invention relates to the field of medical monitoring, and in particular non-contact, video-based monitoring of pulse rate, respiration rate, motion, and oxygen saturation. Systems and methods are described for capturing images of a patient, producing intensity signals from the images, filtering those signals to focus on a physiologic component, and measuring a vital sign from the filtered signals. Examples include flood fill methods and skin tone filtering methods.
Claims20
A video-based method of measuring a patient's vital sign, comprising:
- receiving, from a video camera, a video signal having a field of view;
- identifying, using a processor, a first seed point in the field of view;
- flood filling, using the processor, a first contiguous region from the first seed point to a boundary;
- extracting, using the processor, a first intensity signal from the first contiguous region;
- measuring a vital sign from the first intensity signal;
- and
- dynamically updating the contiguous region over time, including tracking the first seed point and updating the first contiguous region to create a dynamically morphing contiguous region.
4 more elements
Dependencies are inferred from the claim text.