Interactive method for rapidly and automatically extracting fetus electrocardio
A technology for automatic extraction of fetal ECG, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve problems such as difficult transplantation and application, and achieve high accuracy, accurate fetal ECG, and good robustness
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[0047] Using the third channel data of ecg771 in the Non-Invasive Fetal Electrocardiogram Database, it will be described in detail with practical examples.
[0048] Such as figure 1 As shown, the interactive fetal electrocardiogram fast automatic extraction method of the present invention comprises the following steps:
[0049] 1) Take every 3072 points of the maternal abdominal ECG signal, and preprocess the maternal abdominal ECG signal. The preprocessing is to automatically use the Butterworth band-stop filter to remove power frequency interference and automatically use the Butterworth low-pass filter Remove high-frequency noise interference;
[0050] 2) Perform stationary wavelet time-frequency transformation on the preprocessed maternal abdominal ECG signal, the specific operation method is as follows:
[0051] The preprocessed maternal abdominal ECG signal is decomposed by 6-level stationary wavelet with the default choice of 4th order Daubechies wavelet. figure 2 As...
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