Reduction of Walsh-transformed electrocardiograms by double logarithmic coding.
This work presents an electrocardiogram ECG data reduction method based on Walsh spectrum double logarithmic quantization. The technique is theoretically justified for a simulated ECG and its practical efficiency confirmed using MIT/BIH arrhythmia database signals. By classifying a "good" compression as one with MSE < or = 0.005 for 1:1 spectral reduction, a normal/abnormal ECG mix returned an 87% success rate for waveforms stored with 8- to 11-bit resolution.
Berti
E
E
General Impianti, Moie di Maiolati, AN, Italy.
Chiaraluce
F
F
Evans
N E
NE
McKee
J J
JJ
D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000503:physiopathology; D001698:Biomedical Engineering; D001699:Biometry; D003627:Data Interpretation, Statistical; D004562:Electrocardiography / Q000706:statistics & numerical data*; D006801:Humans