Measuring method for blood oxygen saturation of human body based on network camcorder lens

Abstract

The invention discloses a measuring method for blood oxygen saturation of a human body based on a network camcorder lens. The measuring method comprises the steps of: obtaining video information of aface of the human body, selecting a forehead from video frame images as a sensitive region, and generating a Red/Green/Blue(RGB) three-channel signal based on the sensitive region; and performing blind source separation treatment on the RGB signal in a sliding window manner, and replacing AC amplitude of a red-blue channel of a RGB signal in a disclosed method with a red-blue channel coefficient corresponding with alternating components (AC) pertinent to human body arterial blood volume pulse (BVP) in a separated matrix. According to the measuring method disclosed by the invention, the problemthat in disclosed methods, an original signal is poor in signal-noise ratio, and a red-blue channel combination cannot be effectively suitable for a Beer-Lambert Law so that the robustness of an algorithm is influenced in a similar blood oxygen saturation extracting method is solved, and the measuring method has the advantages of being high in measuring accuracy, high in noise interference resisting capacity, large in 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 method for measuring blood oxygen saturation of a human body based on a network camera. Background technique [0002] Blood oxygen saturation (SpO2) reflects the concentration of oxygenated hemoglobin (HbO2) in hemoglobin in human arteries, and is an important physiological indicator in clinical health monitoring. The extraction of blood oxygen saturation relies on Lambert-Beer's law, that is, two incident light of different wavelengths are selected. The absorption coefficients of HbO2 and deoxyhemoglobin (Hb) for these two wavelengths are similar and different, respectively. By measuring the two The blood oxygen saturation is estimated by the transmitted or reflected light intensity of this kind of light after passing through human tissue. The traditional method uses the oximeter to measure the finger parts of the human body to obtain the bloo...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for measuring human blood oxygen saturation based on a network camera, in order to solve the problem that the original signal-to-noise ratio difference an

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