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ECG Signal Baseline Wander Removal Using Wavelet Analysis

机译:小波分析的ECG信号基线漂移消除

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One of the most common problems of ECG re cordings is the baseline wandering in the ECG signals during data collection. Baseline wander elimination is considered as a classical problem in ECG signal filtering. This paper presents two wavelet analysis (WA) based ECG signal baseline wander removal methods, The Discrete Wavelet transform based method uses a high level decomposition and eliminates the lowest frequency component The wavelet packet based searching algorithm uses the energy of the signal in different scales to identify the baseline wander. The algorithm calculates the corresponding energy of wavelet packet coefficients at each scale. After a comparison, the branch of the wavelet binary tree corresponding to higher energy wavelet spaces is chosen. These procedures are tested using specific data records.
机译:心电图记录最常见的问题之一是数据收集过程中心电图信号的基线漂移。消除基线漂移被视为ECG信号滤波中的经典问题。本文提出了两种基于小波分析(WA)的ECG信号基线漂移消除方法,基于离散小波变换的方法使用了高级分解并消除了最低频率分量。基于小波包的搜索算法使用了不同尺度的信号能量确定基线漂移。该算法在每个尺度上计算小波包系数的相应能量。比较之后,选择对应于较高能量小波空间的小波二叉树的分支。这些过程已使用特定的数据记录进行了测试。

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