Abstract

Info

Title:: Application of Euler video amplification technology in non-contact measurement: an analysis based on multi-scale sample entropy

Author(s):: BAO Kailin; CHEN Zhaoxue; School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Keywords:: Euler video amplification multi-scale sample entropy pulse wave pulse rate measurement photoplethysmography

Abstract:: Euler video amplification technology is frequently used in the enhancement of pulse photoplethysmography signals, and the pulse rate measurement is often necessary during the process. In order to determine whether the pulse rate is affected during the magnification, the key characteristics of the peak value of the signals before and after magnification are researched. Entropy is used to represent the complexity of signals by calculating and analyzing the average generation rate of information, and the calculation of multi-scale sample entropy has a good consistency and does not depend on the length of data. Therefore, the instantaneous heart rate of pulses is compared based on multi-scale sample entropy. The experimental results show that the basic pulse rate is maintained after pulse signal amplification, but the sample entropy value after amplification is slightly lower than that before amplification, which indicates that Euler video amplification technology has a weakening effect on the complexity of data and meanwhile makes the signals more stable.