一种滤除心电信号中噪声的形态滤波方法

A Morphological Filtering Approach to Removing Noise in ECG Signals

心电信号在检测过程中 ,常常会引入噪声和发生基线漂移 ,这严重影响了对心电信号的进一步分析和处理。采用数学形态学中的形态滤波方法 ,通过采用不同尺寸结构元素的开—闭和闭—开运算平均组合 ,来滤除心电信号中的噪声和校正基线漂移 。

ECG signals are frequently corrupted by noises and base_line shift occurs when the ECG signals are detected. It will have severe effect on the analysis and processing of the ECG signals in further step. This paper uses a morphological filtering approach in mathematical morphology by combining open_closing and close_opening operations with different size structuring elements to remove the noises of the ECG signals and calibrate the base_line shift. The simulation results showed that the approach was effective.