【摘要】 介绍了一种利用中值滤波器来滤除信号中基线漂移的方法。由于中值滤波器是一种非线性信号处理方法,具有计算简单,处理速度快的特点,从而能在有效抑制基线漂移噪声的情况下,提高整体的运算速度。采用MIT-BIH数据库中的心电数据对该方法进行检验,结果显示该方法能很好地滤除ECG中的基线漂移噪声,同时将该方法与常用的两种方法进行实时性比较,实验结果表明该方法在确保信号不失真的情况下,提高了系统的运算速度。更多还原

【Abstract】 A method using median filter to remove the baseline wander in electrocardiogram is proposed in this paper. Because median filter is a kind of nonlinear signal filter with simple operation and high speed, so that it progress operation speed with controlling the baseline wander. This method is tested using MIT - BIH Database, and proved that it can effectively remove the baseline wander for ECG, and it is compared with two methods, the experiment results show that it can progress operation speed of system, when the signal is undistorted.更多还原