Intelligent-terminal-camera-based method for analyzing short-time pulse rate variability

An intelligent terminal and camera technology, which is applied in the direction of biometric recognition mode, instrument, character and pattern recognition based on physiological signals, can solve the problems of high price, unfavorable popularization and promotion, complicated operation of human sign monitoring equipment, etc., and achieves improved accuracy. degree, and the effect of promoting the application

Inactive Publication Date: 2016-11-09
重庆海睿科技有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for short-term pulse rate variability analysis based on an intelligent terminal camera to solve the

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  • Intelligent-terminal-camera-based method for analyzing short-time pulse rate variability
  • Intelligent-terminal-camera-based method for analyzing short-time pulse rate variability
  • Intelligent-terminal-camera-based method for analyzing short-time pulse rate variability

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Embodiment

[0041] A method for short-term pulse rate variability analysis based on a smart terminal camera, such as figure 1 shown, including the following steps:

[0042] S1: Use the camera of the smart terminal to continuously collect images of the user's fingers. The continuous image collection is to use the camera of the smart terminal to collect images of the fingertips, and turn on the LED light on the back to reduce the interference of external light. The camera continuously collects 280*300 pixel image in 1 minute.

[0043] S2: Extract the grayscale information in each frame of image, and accumulate the grayscale value of each pixel in each frame of image as the overall grayscale value of each frame of image, and the overall grayscale value of consecutive images constitutes blood gray degree change waveform. In this embodiment, the real-time preview image format of the Android system camera is YUV420SP. Separate the gray value from each pixel, that is, the Y component of YUV42...

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Abstract

The invention provides an intelligent-terminal-camera-based method for analyzing short-time pulse rate variability. A camera of an intelligent terminal is used for collecting and capturing a small change of a color of blood in an artery blood vessel; a gray scale value is extracted to simulate a photoelectric plethysmography signal; and then the photoelectric plethysmography signal is processed, thereby realizing a short-time pulse rate variability analysis. With the method, stability of pulse wave collection by a camera as well as characteristic point identification precision is improved; and compared with a long-time pulse rate variability analysis, the short-time pulse rate variability analysis can be realized conveniently and rapidly; and pulse rate variability monitoring can be popularized and applied widely.

Description

technical field [0001] The invention relates to the technical field of human body sign parameter measurement, in particular to a method for analyzing short-term pulse rate variability based on an intelligent terminal camera. Background technique [0002] Because arterial activity causes subtle changes in the skin color of specific parts of the human body, high-resolution cameras can be used to collect information on skin color changes, and the required physical parameters can be measured based on the continuous images collected. Pulse rate variability (PRV) can accurately reflect the activity information of the heart, and provides a reference for the diagnosis of cardiac function changes and heart diseases. [0003] In the past two years, some research results have been obtained in the measurement of human physiological characteristic parameters using bio-optical information, but most of them are based on professional measurement equipment. Although such methods can obtain a...

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Application Information

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IPC IPC(8): G06K9/00G06K9/40G06K9/54
CPCG06V40/10G06V40/15G06V10/30G06V10/20
Inventor 庞宇周金华李章勇李捷王伟冉鹏
Owner 重庆海睿科技有限公司
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