Body surface ECG mapping is one of the new diagnostic technique of heart disease. Tak ing the large noise in body surface ECG and the great difference between ECG leads into ac count , the authors proposed a high performance ECG processing algorithm, which includes 50Hz notch filter,zero-phase low-pass filter,and wide range parabolic baseline fitting al gorithm. Based on ECG processing,the authors combine the first and second order differential with amplitude in time domain to form the thresh...
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