Pain assessment method combining heart rate variation features and facial expression features

Abstract

The invention provides a pain assessment method combining heart rate variation features and facial expression features. According to the invention, the expression feature information and the heart rate variation feature information are merged into a pain fusion feature set, and input into a SVR regression classifier for training and learning, a facial expression image sequence and the heart rate data of a patient to-be-evaluated are collected to generate a pain fusion feature set to-be-tested, and sent to a trained SVR classifier for regression prediction to complete the assessment of pain level. The pain assessment method of the fusion heart rate variation feature and the facial expression feature of the present invention can not only quickly and accurately evaluate the pain level, but also eliminates interference of light, the facial features, the physiological response characteristics, the pain tolerance and other factors on pain expression recognition, and improves the accuracy androbustness of pain assessment.

Description

technical field [0001] The present invention relates to the field of intelligent medical technology, and more specifically relates to a pain assessment method that integrates heart rate variation features and facial expression features. Background technique [0002] Pain is often expressed as an unpleasant emotion with potential tissue damage. In 2001, the World Health Organization (WHO) officially recognized pain as a human disease, the "fifth vital sign" after the four vital signs of breathing, pulse, body temperature and blood pressure, and pain relief as a a basic human right. With the development of society, the continuous improvement of medical level and the increasing demand of patients for pain treatment, pain treatment has been paid more and more attention by the medical and health departments. Many hospitals have set up special pain departments or pain centers to provide all-round Carry out the medical treatment, scientific research and teaching work related to p...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a pain assessment method that combines heart rate variability features and facial expression features to solve the inaccurate judgment problem in the prior art caused by judging the pain level of a patient based only on facial expression features , to eliminate the interference of the patient's pain level judgment result due to individual differences such as the patient's facial features, physiological response features, and pain tolerance, to ensure the robustness and accuracy of the pain assessment method that integrates heart rate variability features and facial expression features. accuracy

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