Study on P Wave Detection Method Based on Optimal Fitting Function
Abstract：Objective To accurately detect ECG P wave, a P wave detection algorithm based on fitting function in the optimal interval is proposed and evaluated in this paper, for resolving very difficult problems. Such as differences of positions and figures in ECG P wave as well as easily suffered diversified interferences. Methods In this algorithm the quadratic function to fit the P wave with least square method in every interval was used, which was shifted in local range. Then the optimal fitting interval of P wave was found by comparing the error of fitting. Finally, the characteristic points of P wave were obtained with the fitting function to fit P wave in the optimal interval. Results The performance of this algorithm tested with the records of the MIT-BIH database was effective and accurate. Conclusion This algorithm on the wide range of heart rate variation and small P wave of ECG P wave detection has good effect. Also it has some capabilities of anti-interference and quite low dismissal probability in particular.
Keywords：P wavefitting function methodoptimal intervalthe least square method
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)