Title :
Wavelet based distortion measurement and enhancement of ECG signal
Author :
Awal, Md Abdul ; Ahmad, Mohiuddin ; Daut, I. ; Mid, E.C. ; Rashid, M.A.
Author_Institution :
Dept. of Biomed. Eng., Khulna Univ. of Eng. & Technol., Khulna, Bangladesh
Abstract :
This paper describes the research carried out to eliminate the noise found in ECG signal and cardiac rhythm using Coiflet wavelet since its scaling function is closely related to the shape of ECG and suited for denoising for many applications. Different adaptive and soft threshold functions are used to enhance the ECG signal. The output SNR shows an outstanding performance of 6.2 dB as compared with other methods. In addition to SNR improvement and different statistical tools, a new time-scale qualitative distortion measure named scalogram difference factor is also proposed.
Keywords :
distortion measurement; electrocardiography; medical signal processing; signal denoising; wavelet transforms; Coiflet wavelet; ECG signal distortion measurement; ECG signal enhancement; adaptive functions; cardiac rhythm; noise elimination; output signal-noise ratio; scaling function; scalogram difference factor; soft threshold functions; time scale qualitative distortion measure; wavelet based distortion measurement; 1f noise; Continuous wavelet transforms; Electrocardiography; Noise reduction; Signal to noise ratio; Coiflet wavelet; ECG; SNR improvement; denoising; scalogram difference factor;
Conference_Titel :
Biomedical Engineering (ICoBE), 2012 International Conference on
Conference_Location :
Penang
Print_ISBN :
978-1-4577-1990-5
DOI :
10.1109/ICoBE.2012.6179041
