Photo Plethysmo Graph image (PPGi) is a method of using vision to collect and analyze the color changes of human skin caused by blood charging.Compared with traditional methods of using electrodes,this noncontact method can provide more comfortable physiological information extraction,and is very important in health monitoring and humancomputer interaction scenarios of some nonclinical scenes.A method of extracting pulse signals based on automatic face tracking and principal component analysis RGB color channel was proposed.Video was taken on 10 subjects,and the experiment was carried out in three situations:daylight,light and the presence of daylight and light at the same time.The 10 subjects were recorded by a smart phone camera and acquiring the ECG signal by a PSG simultaneously for comparison.The experimental results show that the algorithm can not only extract the pulse rate accurately,but also reduce the computation time.
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李铁军,王旭之,刘今越,田浩辰,齐恒佳.运用视觉和主成分分析的非接触式心率测量[J].机床与液压,2018,46(22):72-75. . Noncontact Pulse Rate Measurements Using Vision and PCA[J]. Machine Tool & Hydraulics,2018,46(22):72-75