A fuzzy method for high resolution localization of ECG waves

An application of energy measure of fuzziness to the high-resolution alignment of QRS complexes of ECG signals is presented. Alignment is of crucial meaning for averaging and heart rate variability analysis. In the first part of the paper the formulation of the problem and an idea of energy measure of fuzziness is recalled. In the second part the main steps of the approach are shown. First a fuzzy signal is created on the basis of the original signal. Next for such a signal an energy measure of fuzziness is computed and filtered by means of a lowpass filter. Such a processed measure is finally applied to the alignment of QRS complexes. The performances of the method are compared by means of trade-off studies with the methods known from literature.