Non-contact method and system for synchronously measuring human respiration rate and heart rate

A non-contact, synchronous measurement technology, applied in the measurement of pulse rate/heart rate, diagnostic record/measurement, medical science, etc., to achieve the effect of huge application potential, obvious change characteristics and high accuracy

Active Publication Date: 2019-04-05
ANHUI UNIVERSITY
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Problems solved by technology

[0004] The purpose of the present invention is to provide a non-contact method for synchronously measuring human respiration rate and heart rate and to extract the respiration and heart rate signals synchronously from the body and face video of the system, which can overcome the problem of noise interference and realize the simultaneous measurement of two physiological parameters

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  • Non-contact method and system for synchronously measuring human respiration rate and heart rate
  • Non-contact method and system for synchronously measuring human respiration rate and heart rate

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Embodiment Construction

[0043] combine Figure 1 to Figure 11 To further illustrate, the non-contact method for synchronously measuring human breathing rate and heart rate, the measuring method includes the following steps,

[0044] S100. Obtain human face video information, and select two sensitive areas from the video frame image, which are the mouth area and the throat area;

[0045] S101. For the pixel values ​​of the selected dual sensitive areas in each frame of the video, respectively use the coherent averaging method to generate 2 groups of RGB observation signals, and then perform high-pass filtering, detrending, demeaning, and normalization on the 2 groups of RGB observation signals in sequence. One preprocessing operation;

[0046] S102, for performing 6-channel blind source separation on the two groups of RGB observation signals generated based on the dual sensitive areas, and separating the respiratory signal and the heart rate signal;

[0047] S103, for identifying the respiration sig...

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Abstract

The invention relates to a non-contact method and system for synchronously measuring human breathing rate and heart rate. The measuring method includes the following steps: acquiring human face video information, selecting two sensitive areas from video frame images; Select the pixel values ​​of the dual sensitive areas, respectively use the coherent average method to generate two groups of RGB observation signals, and then perform high-pass filtering, detrending, demeaning, and normalization preprocessing operations on the two groups of RGB observation signals; 6-channel blind source separation based on two sets of RGB observation signals generated by dual sensitive areas to separate the respiratory signal and heart rate signal; used to identify the respiratory signal and heart rate signal from the source signal after blind source separation, combined with the sliding window algorithm to extract Breathing and heart rate. The invention has the advantages of high accuracy in synchronous measurement of the breathing rate and the heart rate, strong anti-noise interference ability, great application potential and the like.

Description

technical field [0001] The invention relates to the technical field of biological sign research and application, in particular to a non-contact method and system for synchronously measuring human breathing rate and heart rate. Background technique [0002] Heart rate and respiration rate are important physical parameters. How to accurately measure these two parameters through non-contact measurement has always been one of the hot spots in the field of biomedical engineering and instrumentation. Imaging Photoplethysmography (IPPG) technology is a non-contact physiological parameter detection technology developed on the basis of PPG. Sensitive region (region of interest, ROI) is processed to realize a biomedical detection method for extracting physiological parameters such as heart rate, respiration rate, and blood oxygen saturation. IPPG technology has many advantages such as low cost, non-contact, safety, continuous measurement, and simple operation. It provides a new solut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0205
CPCA61B5/0205A61B5/024A61B5/0816A61B5/72A61B5/7203A61B5/725
Inventor 卫兵吴小培张超何璇吕钊张磊周蚌艳
Owner ANHUI UNIVERSITY
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