Non-contact type driver heart rate detection method

• Main Authors: CHEN CHANGCHUAN, LIU PENGZE, DAI SHAOSHENG, XIA KAIYI
• Format: Patent
• Language: Chinese; English
• Published: 25.04.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; DIAGNOSIS; ELECTRIC DIGITAL DATA PROCESSING; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; MEDICAL OR VETERINARY SCIENCE; PHYSICS; SURGERY

The invention relates to the technical field of remote photoelectric volume scanning, in particular to a non-contact type driver heart rate detection method. According to the method, a face image of a driver is obtained, and an rPPG signal matrix is obtained through a KTL algorithm, guide filtering and other modes; the rPPG signal matrix is subjected to dimension reduction, ICA and fast Fourier transform, and finally a heart rate measurement value at the current moment is obtained; and calculating a heart rate predicted value at the previous moment by adopting a Kalman filter, and obtaining a heart rate predicted value at the current moment according to the heart rate measured value at the current moment and the heart rate predicted value at the previous moment. 本发明涉及远程光电体积扫描术领域，具体涉及一种非接触式驾驶员心率检测方法；该方法获取驾驶员的人脸图像，通过KTL算法、引导滤波等方式获取rPPG信号矩阵；对rPPG信号矩阵进行降维、ICA和快速傅里叶变换，最终得到当前时刻的心率测量值；采用卡尔曼滤波器计算上一时刻的心率预测值，根据当前时刻的心率测量值和上一时刻的心率预测值得到当前时刻的心率预测值。