On recognizing the ECG P-wave based on approximating functions in the optimum region.
- Author:
Lu LI
1
;
Hao YANG
;
Yuping BIAN
;
Xiaoli QUAN
Author Information
1. Electric Engineering Institute of Chongqing University, Chongqing 400030, China. liluzi0556@sina.com
- Publication Type:Journal Article
- MeSH:
Algorithms;
Electrocardiography;
methods;
Humans;
Signal Processing, Computer-Assisted
- From:
Journal of Biomedical Engineering
2008;25(3):506-509
- CountryChina
- Language:Chinese
-
Abstract:
Aiming at the problem that it is difficult to accurately recognize the position and the figure of P wave in the ECGs easily influenced by the diversified interference,a P wave detection algorithm based on approximating functions in the optimum region is proposed in this paper. In the algorithm we use a conic to approach the P wave by means of the least square method in every region, which is shifted in local range. Then we find the optimum approach region of P wave by comparing the approximating error. Finally, we attain the characteristic points of P wave by using the approximating functions to approach P wave in the optimum region. The performance of the algorithm tested using the records of the MIT-BIH database is effective and accurate.
