Optimization of Discrete Anamorphic Stretch Transform and Phase Recovery for ECG Signal Compression

2021 ◽  
pp. 1-15
Author(s):  
R. Thilagavathy ◽  
B. Venkataramani
Keyword(s):  
Ecg Signal ◽  
Signal Compression ◽  
Phase Recovery

scholarly journals The Effects of Compression on the Detection of Atrial Fibrillation in ECG Signals

2021 ◽  
Vol 11 (13) ◽  
pp. 5908
Author(s):  
Raquel Cervigón ◽  
Brian McGinley ◽  
Darren Craven ◽  
Martin Glavin ◽  
Edward Jones
Keyword(s):  
Atrial Fibrillation ◽  
Characteristic Curve ◽  
Set Partitioning ◽  
Constrained Systems ◽  
Battery Life ◽  
Detection Accuracy ◽  
Ecg Signal ◽  
Signal Compression ◽  
Ecg Signals ◽  
Cardiac Devices

Although Atrial Fibrillation (AF) is the most frequent cause of cardioembolic stroke, the arrhythmia remains underdiagnosed, as it is often asymptomatic or intermittent. Automated detection of AF in ECG signals is important for patients with implantable cardiac devices, pacemakers or Holter systems. Such resource-constrained systems often operate by transmitting signals to a central server where diagnostic decisions are made. In this context, ECG signal compression is being increasingly investigated and employed to increase battery life, and hence the storage and transmission efficiency of these devices. At the same time, the diagnostic accuracy of AF detection must be preserved. This paper investigates the effects of ECG signal compression on an entropy-based AF detection algorithm that monitors R-R interval regularity. The compression and AF detection algorithms were applied to signals from the MIT-BIH AF database. The accuracy of AF detection on reconstructed signals is evaluated under varying degrees of compression using the state-of-the-art Set Partitioning In Hierarchical Trees (SPIHT) compression algorithm. Results demonstrate that compression ratios (CR) of up to 90 can be obtained while maintaining a detection accuracy, expressed in terms of the area under the receiver operating characteristic curve, of at least 0.9. This highlights the potential for significant energy savings on devices that transmit/store ECG signals for AF detection applications, while preserving the diagnostic integrity of the signals, and hence the detection performance.

Computational efficient method for ECG signal compression based on modified SPIHT technique

2014 ◽  
Vol 15 (2) ◽  
pp. 173 ◽  
Author(s):  
Ranjeet Kumar ◽  
A. Kumar ◽  
G. Akhil ◽  
A. Singh ◽  
S.N.H. Jafri
Keyword(s):  
Efficient Method ◽  
Ecg Signal ◽  
Signal Compression

Mean-shape vector quantizer for ECG signal compression

1999 ◽  
Vol 46 (1) ◽  
pp. 62-70 ◽  
Author(s):  
J.L. Cardenas-Barrera ◽  
J.V. Lorenzo-Ginori
Keyword(s):  
Ecg Signal ◽  
Signal Compression ◽  
Vector Quantizer ◽  
Mean Shape ◽  
Shape Vector
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