Title :
Modelling 1-D signals using Hermite basis functions
Author :
Rasiah, A.I. ; Togneri, R. ; Attikiouzel, Y.
Author_Institution :
Motorol Australia Software Centre, Adelaide, SA, Australia
fDate :
12/1/1997 12:00:00 AM
Abstract :
The paper discusses a method for estimating the Hermite coefficients of a discrete-time one-dimensional signal. To estimate the Hermite coefficients a solution based on Gaussian quadratures is used. The paper also looks at various least mean squared (LMS) estimation methods to estimate two further parameters which are incorporated into the orthonormal Hermite basis function; a spread term and a shift term. In addition, the effects of scaling, dilation and translates of a signal on its Hermite coefficients, spread and shift terms are presented. The paper concludes with a brief discussion on the potential application of the Hermite parameters as features for use in problems requiring shape discrimination within a one-dimensional signal. It also mentions those applications where this was found to be appropriate
Keywords :
Gaussian processes; discrete time systems; electrocardiography; feature extraction; least mean squares methods; medical signal processing; parameter estimation; signal representation; 1D signal modelling; ECG signal; Gaussian quadratures; Hermite basis functions; Hermite coefficients estimation; LMS parameter estimation; QRS detection; applications; dilation; discrete-time one-dimensional signal; feature extraction; least mean squared estimation methods; scaling; shape discrimination; shift term; signal translates; spread term;
Journal_Title :
Vision, Image and Signal Processing, IEE Proceedings -
DOI :
10.1049/ip-vis:19971613