Remote photoplethysmography-based heart rate measurement

A photoplethysmography, heart rate technology, applied in diagnostic recording/measurement, biometric mode based on physiological signals, measurement of pulse rate/heart rate, etc., can solve problems such as sensor inconvenience

Pending Publication Date: 2022-05-27
TENCENT AMERICA LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, contact-based sensors are inconvenient in certain situations, such as when physical contact is undesirable or even infeasible

Method used

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  • Remote photoplethysmography-based heart rate measurement
  • Remote photoplethysmography-based heart rate measurement
  • Remote photoplethysmography-based heart rate measurement

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Embodiment Construction

[0011] Embodiments of the present application relate to non-contact, video-based physiological measurements that provide the possibility to use ubiquitous and low-cost webcams or smartphone cameras for imperceptibly concomitant measurements of vital vital signs.

[0012] Vital signs such as heart rate and blood oxygen saturation are currently measured using contact devices. However, both in hospital settings and in ubiquitous field health tracking (eg, on mobile phones and computers with webcams), non-contact methods of vital sign measurement are required. The present application provides a method for measuring heart rate based on remote photoplethysmography (RPPG, remote photoplethysmography), which detects a PPG signal from pixel changes of a face video. This method can be implemented with consumer-grade cameras such as webcams or mobile cameras without any additional external hardware. Under appropriate lighting conditions, heart rate obtained from PRRG can be very accurat...

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Abstract

A method of determining a heart rate of a subject, performed by at least one processor, includes obtaining video data of the subject; detecting a face of a subject in the video data; selecting at least one region of interest (ROI) in the face; acquiring a photoplethysmography (PPG) signal based on the at least one ROI; and determining the heart rate of the subject according to the PPG signal.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority to US Patent Application Serial No. 17 / 103,128, filed with the US Patent and Trademark Office on November 24, 2020, the entire contents of which are incorporated herein by reference. Background technique [0003] Regular and non-invasive measurements of vital signs, such as heart rate, are important both in hospital and at home because they play an important role in diagnosing and monitoring health conditions. Currently, many vital signs measurement technologies are based on contact sensors, such as pulse oximeters and blood pressure monitors. However, contact-based sensors are inconvenient in certain situations, such as when physical contact is not desirable or even feasible. SUMMARY OF THE INVENTION [0004] According to some possible implementations, the present application provides a method for determining the heart rate of a subject, executed by at least one processor, including: a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/024
CPCA61B5/02416A61B5/02427A61B5/0022G06V40/15G06V40/165G06V10/25A61B5/0037A61B5/14552A61B5/0816G16H30/40G06F2218/10A61B5/7278A61B5/7485A61B5/7203A61B2576/02G16H30/20A61B5/0077G06V20/40
Inventor 黄超韩连漪谭辉林斯姚霍志敏范伟
Owner TENCENT AMERICA LLC
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