All Outputs (10)

Wavelet transform reassignment and the use of low-oscillation complex wavelets. (2006)
Journal Article
Addison, P., Morvidone, M., Watson, J. N., & Clifton, D. (2006). Wavelet transform reassignment and the use of low-oscillation complex wavelets. Mechanical Systems and Signal Processing, 20, 1429-1443. https://doi.org/10.1016/j.ymssp.2005.03.002

In this paper, we explore the use of new time-frequency reassignment tools for the enhancement of prominent features in the time-frequency plane of the wavelet transform. The reassignment method allows for the localisation of time-frequency and time-... Read More about Wavelet transform reassignment and the use of low-oscillation complex wavelets..

A comparison of continuous wavelet transform and modulus maxima analysis of characteristic ECG features. (2005)
Conference Proceeding
Romero Legarreta, I., Addison, P., Grubb, N. R., Clegg, G. R., Robertson, C. E., & Watson, J. N. (2005). A comparison of continuous wavelet transform and modulus maxima analysis of characteristic ECG features. In Computers in Cardiology, 2005 (755-758). https://doi.org/10.1109/CIC.2005.1588214

The continuous wavelet transform (CWT) offers a valuable tool for the analysis of signals as it provides precise location in time of high frequency components. The selection of a mother wavelet with high correlation with the signal under study provid... Read More about A comparison of continuous wavelet transform and modulus maxima analysis of characteristic ECG features..

Wavelet analysis of the ECG: A review (2005)
Journal Article
Addison, P. (2005). Wavelet analysis of the ECG: A review. Physiological Measurement, 26(5), 155-199. https://doi.org/10.1088/0967-3334/26/5/R01

The wavelet transform has emerged over recent years as a powerful time–frequency analysis and signal coding tool favoured for the interrogation of complex nonstationary signals. Its application to biosignal processing has been at the forefront of the... Read More about Wavelet analysis of the ECG: A review.

Heart rate variability measurements and the prediction of ventricular arrhythmias. (2005)
Journal Article
Reed, M. J., Addison, P., & Robertson, C. E. (2005). Heart rate variability measurements and the prediction of ventricular arrhythmias. QJM: An International Journal of Medicine, 98, 87-95. https://doi.org/10.1093/qjmed/hci018

Heart rate variability (HRV) is the temporal variation between sequences of consecutive heartbeats. It is possible that HRV confers a survival advantage.In normal subjects, a variable heart rate is the normal physiological state. A loss of variabili... Read More about Heart rate variability measurements and the prediction of ventricular arrhythmias..

Improved prediction of defibrillation success for out-of-hospital VF cardiac arrest using wavelet transform methods (2004)
Journal Article
Watson, J. N., Uchaipichata, N., Addison, P., Clegg, G. R., Robertson, C. E., Eftestol, T., & Steen, P. A. (2004). Improved prediction of defibrillation success for out-of-hospital VF cardiac arrest using wavelet transform methods. Resuscitation, 63(3), 269-275. https://doi.org/10.1016/j.resuscitation.2004.06.012

We report an improved method for the estimation of shock outcome prediction based on novel wavelet transform-based time-frequency methods. Wavelet-based peak frequency, energy, mean frequency, spectral flatness and a new entropy measure were studied... Read More about Improved prediction of defibrillation success for out-of-hospital VF cardiac arrest using wavelet transform methods.

Secondary wavelet feature decoupling (SWFD) and its use in detecting patient respiration from the photoplethysmogram. (2003)
Conference Proceeding
Addison, P., & Watson, J. N. (2003). Secondary wavelet feature decoupling (SWFD) and its use in detecting patient respiration from the photoplethysmogram. In Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (IEEE Cat. No.03CH37439) (2602-2605). https://doi.org/10.1109/IEMBS.2003.1280448

We describe a method for the identification of time-frequency features associated with patient respiration in the wavelet decomposition of the photoplethysmogram where the respiration features are masked by other signal components with similar spectr... Read More about Secondary wavelet feature decoupling (SWFD) and its use in detecting patient respiration from the photoplethysmogram..

R-wave detection using continuous wavelet modulus maxima. (2003)
Conference Proceeding
Romero Legarreta, I., Addison, P., Grubb, N. R., Clegg, G. R., Robertson, C. E., Fox, K. A. A., & Watson, J. N. (2003). R-wave detection using continuous wavelet modulus maxima. In Computers in Cardiology, 2003 (565-568). https://doi.org/10.1109/CIC.2003.1291218

Modulus maxima derived from the continuous wavelet transform offers an enhanced time-frequency analysis technique for ECG signal analysis. Features within the ECG can be shown to correspond to various morphologies in the continuous modulus maxima dom... Read More about R-wave detection using continuous wavelet modulus maxima..

Finding coordinated atrial activity during ventricular fibrillation using wavelet decomposition. (2002)
Journal Article
Addison, P., Watson, J. N., Clegg, G. R., Steen, P. A., & Robertson, C. E. (2002). Finding coordinated atrial activity during ventricular fibrillation using wavelet decomposition. IEEE engineering in medicine & biology magazine the quarterly magazine of the Engineering in Medicine & Biology Society, 21, 58-65. https://doi.org/10.1109/51.993194

Until recently, the ECG recorded during ventricular fibrillation was thought to represent disorganized and unstructured electrical activity of the heart. Using a new signal analysis technique based on wavelet decomposition, we have begun to reveal pr... Read More about Finding coordinated atrial activity during ventricular fibrillation using wavelet decomposition..

Wavelet-based filtering for the clinical evaluation of atrial fibrillation. (2001)
Conference Proceeding
Watson, J. N., Addison, P., Grubb, N. R., Clegg, G. R., Robertson, C. E., & Fox, K. A. A. (2001). Wavelet-based filtering for the clinical evaluation of atrial fibrillation. In 2001 Conference Proceedings of the 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (302). https://doi.org/10.1109/IEMBS.2001.1018919

Summary form only given. This paper describes the work in progress to develop a new ECG signal filtering technique to aid the clinical analysis of atrial fibrillation. The method separates the wavelet transform modulus maxima corresponding to the sig... Read More about Wavelet-based filtering for the clinical evaluation of atrial fibrillation..

Evaluating arrhythmias in ECG signals using wavelet transforms. (2000)
Journal Article
Addison, P., Watson, J. N., Clegg, G. R., Holzer, M., Sterz, F., & Robertson, C. E. (2000). Evaluating arrhythmias in ECG signals using wavelet transforms. IEEE engineering in medicine & biology magazine the quarterly magazine of the Engineering in Medicine & Biology Society, 19, 104-109. https://doi.org/10.1109/51.870237

Recent work has attempted to utilize wavelet techniques in the analysis of biomedical signals including ECGs. Here, the authors present an energy-based method of interrogating the ECG in VF using high-resolution, log-scale continuous wavelet plots. W... Read More about Evaluating arrhythmias in ECG signals using wavelet transforms..