Resumo

INFANTE, Saba; SANCHEZ, Luis  e  CEDENO, Fernando. Nonlinear filters to reconstruct electrocardiogram signals. Rev. Mat [online]. 2014, vol.21, n.2, pp.199-226. ISSN 1409-2433.

ECG signals have been used in cardiac pathology to detect disease heart. The main objective of this paper is to propose signal filtering techniques to reduce noise, extract information, to reconstruct the states and properties Morphological heartbeat. In addition, aims to represent the cardiac activity in a simple, informative, accurate, and easy to interpret for cardiologists. To achieve these objectives are proposed to implement the following algorithms: generic particle filter (GPF), resampling particle filter (RPF), unscented Kalman filter (UKF) and the unscented particle filter (UFP) considering the basic structure of synthetic dynamic model McSharry et al. (2003) [16]. The results show that filter performs very well in the reconstruction of the states heart rate system, while introducing small variations in the variances of the noises of the equation observation, ie, the methods have the ability to reproduce the original signal the synthetic model simulated and the synthetic model with real data accurately. Finally evaluates the performance of the filters in terms of the empirical standard deviation, showing little variability among the estimated errors and fast execution of algorithms.

Palavras-chave : synthetic ECG model; nonlinear filters; morphology of waves.

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