Autodetection of J Wave Based on Random Forest with Synchrosqueezed Wavelet Transform

Figure 4

The time-frequency curve of the ECG fragment when the center frequency is 45hz. (a) The TF-plane WT-based of J wave-positive. (b) The TF-plane WT-based of J wave-negative. (c) The TF-plane SST-based of J wave-positive. (d) The TF-plane SST-based of J wave-negative.

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(b)

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