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The Motion Artifact Reduction from the PPG based on EWMA

지수가중 이동평균 기반의 PPG 신호 동잡음 제거

  • Lee, Jun-Yeon (Dept. of Media Engineering, Tongmyung University)
  • 이준연 (동명대학교 미디어공학과)
  • Received : 2013.06.18
  • Accepted : 2013.08.20
  • Published : 2013.08.28

Abstract

The Photoplethysmogram is a similar periodic signal that synchrinized to a heartbeat. In this paper, we propose a exponential weight moving average filter that use similarity of Photoplethysmogram. This filtering method has the average value of each samples through separating the cycle of PPG signal. If there are some motion artifacts in continuous PPG signal, disjoin the signal based on cycle. And then, we made these signals to have same cycle by coordinating the number of sample. After arrange these cycles in 2 dimension, we put the average value of each samples from starting till now. So, we can eliminate the motion artifacts without damaged PPG signal.

Keywords

exponential weighted moving average;photoplethysmography;periodic moving average filter;motion artifact reduction

Acknowledgement

Supported by : 동명대학교