Non-contact mental stress assessment system

Abstract

The invention discloses a non-contact mental stress evaluation system, which comprises a video acquisition module, a data processing module and an analysis and evaluation module; the video acquisition module is used for acquiring an upper body video of the to-be-tested person; the data processing module is used for carrying out feature point detection on the divided face region and identifying the micro-expression of the person to be detected, performing color amplification on the divided face area by utilizing Euler color amplification, and extracting a pulse wave signal to obtain heart rate and heart rate variability physiological parameters, acquiring the displacement signal and the breathing rate of the chest wall through Euler motion amplification, performing data dimension reduction on the extracted micro-expression, heart rate and heart rate variability physiological parameters, the displacement signal of the chest wall and the respiratory rate by using a data dimension reduction technology; an analysis and evaluation module which is used for analyzing and evaluating the data output by the data processing module by using a non-contact mental stress evaluation model, or training the non-contact mental stress evaluation model. The method has the advantages of few sensors, simplicity in operation and low cost.

Description

technical field [0001] The invention relates to technical fields such as optical engineering, medicine, psychology and computer algorithms, and in particular to a non-contact mental stress assessment system. Background technique [0002] In the context of rapid social development, people are under increasing mental stress from work, study, and life. If they are under high-pressure work, study, and life for a long time, it will further affect the physical health of the human body, causing high blood pressure, High-risk chronic diseases such as heart disease lead to insomnia and decreased immune function. Long-term strong mental stress without timely relief may lead to serious consequences such as depression and even suicide. According to statistics from the World Health Organization in 2017, the number of depression patients worldwide reached 350 million, and by 2020 it may become the second largest disease in humans. A survey shows that in the practice of psychological coun...

AI Technical Summary

Problems solved by technology

These methods are either complicated, or have a strong sense of intrusion, which to a certain extent reduces the willingness of the subject to actively cooperate with the test, resulting in delays in the condition

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