Adaptive EMG noise reduction in ECG signals using noise level approximation

Mohamed Marouf; Lazar Saranovac

doi:10.1117/12.2299841

19 December 2017 Adaptive EMG noise reduction in ECG signals using noise level approximation

Mohamed Marouf, Lazar Saranovac

Proceedings Volume 10613, 2017 International Conference on Robotics and Machine Vision; 106130E (2017) https://doi.org/10.1117/12.2299841
Event: Second International Conference on Robotics and Machine Vision, 2017, Kitakyushu, Japan

Abstract

In this paper the usage of noise level approximation for adaptive Electromyogram (EMG) noise reduction in the Electrocardiogram (ECG) signals is introduced. To achieve the adequate adaptiveness, a translation-invariant noise level approximation is employed. The approximation is done in the form of a guiding signal extracted as an estimation of the signal quality vs. EMG noise. The noise reduction framework is based on a bank of low pass filters. So, the adaptive noise reduction is achieved by selecting the appropriate filter with respect to the guiding signal aiming to obtain the best trade-off between the signal distortion caused by filtering and the signal readability. For the evaluation purposes; both real EMG and artificial noises are used. The tested ECG signals are from the MIT-BIH Arrhythmia Database Directory, while both real and artificial records of EMG noise are added and used in the evaluation process. Firstly, comparison with state of the art methods is conducted to verify the performance of the proposed approach in terms of noise cancellation while preserving the QRS complex waves. Additionally, the signal to noise ratio improvement after the adaptive noise reduction is computed and presented for the proposed method. Finally, the impact of adaptive noise reduction method on QRS complexes detection was studied. The tested signals are delineated using a state of the art method, and the QRS detection improvement for different SNR is presented.

Citation Download Citation

Mohamed Marouf and Lazar Saranovac "Adaptive EMG noise reduction in ECG signals using noise level approximation", Proc. SPIE 10613, 2017 International Conference on Robotics and Machine Vision, 106130E (19 December 2017); https://doi.org/10.1117/12.2299841

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