关键词: 心电自动分析 QRS波检测 形态学运算

Abstract:

This paper describes a multi-structuring-element morphological approach with feedback correction for detecting the QRS complex in ECG signals. First,  impulsive noise is removed from the input ECG signals by the morphological filtering operation. Second, the morphological peak-valley extraction operati  on is employed to the filtered signals with two structuring elements of different sizes to obtain the information of the QRS complex about the steep shape and amplitude. Then,the QRS complex is located using the adaptive threshold detection. Finally, the detection results are evaluated and corrected acc  ording to the calculated RR interval, and the evaluation-correction process is repeated until the obtained detection results are satisfied. The proposed approach has been tested using the MIT-BIH Arrhythmia Database. And the results show that it performs well in detecting the QRS complex.

Key words:  （automatic ECG analysis, QRS complex detection, morphological operation）