نتایج جستجو برای: haar wavelet method

تعداد نتایج: 1656697  

2005
Markus Nilsson

In this paper, we present a method with a low complexity for analysing short and dynamic biomedical sequences. The method uses the Daubechies D4 wavelet in combination with similarity fitness schemes for retrieval. The method has been shown to outperform Fourier based methods in retrieving biomedical sequences of dynamic lengths, as well as the Haar wavelet.

2014
Kumar Sahu Praveen Kumar Sahu Anup Mishra

The aim of this project is to analyze and analytical solution of different optimal control problems are difficult to obtain because they involve differential equations with single or multiple boundary conditions. In this dissertation, numerical methods using Haar Wavelet a represented to overcome this difficulty. The method reduces the differential equations into a set of line a matrix algebrai...

Journal: :geopersia 2012
mohammad nakhaei amir saberi nasr

accurate groundwater level modeling and forecasting contribute to civil projects, land use, citys planning and water resources management. combined wavelet-artificial neural network (wann) model has been widely used in recent years to forecast hydrological and hydrogeological phenomena. this study investigates the sensitivity of the pre-processing to the wavelet type and decomposition level in ...

Journal: :Applied Mathematics and Computation 2009
G. Hariharan K. Kannan K. R. Sharma

In this paper, we develop an accurate and efficient Haar wavelet solution of Fisher's equation , a prototypical reaction–diffusion equation. The solutions of Fisher's equation are characterized by propagating fronts that can be very steep for large values of the reaction rate coefficient. There is an ongoing effort to better adapt Haar wavelet methods to the solution of differential equations w...

2013
Anuj Bhardwaj Rashid Ali

Wavelets are mathematical tools for hierarchically decomposing functions. Wavelet Transform has been proved to be a very useful tool for image processing in recent years. It allows a function which may be described in terms of a coarse overall shape, plus details that range from broad to narrow. The most distinctive feature of Haar Transform lies in the fact that it lends itself easily to simpl...

Journal: :journal of linear and topological algebra (jlta) 0
j nazari khorasgan branch, islamic azad university m nili ahmadabadi h almasieh department of mathematics, isfahan (khorasgan) branch, islamic azad university, isfahan, iran.

in this paper, an effective and simple numerical method is proposed for solving systems of integral equations using radial basis functions (rbfs). we present an algorithm based on interpolation by radial basis functions including multiquadratics (mqs), using legendre-gauss-lobatto nodes and weights. also a theorem is proved for convergence of the algorithm. some numerical examples are presented...

2012
S. G. Venkatesh S. K. Ayyaswamy G. Hariharan

In this paper, we present a framework to determine Haar solutions of Bratu-type equations that are widely applicable in fuel ignition of the combustion theory and heat transfer. The method is proposed by applying Haar series for the highest derivatives and integrate the series. Several examples are given to confirm the efficiency and the accuracy of the proposed algorithm. The results show that...

2007
Leonid Yaroslavsky Alex Gershman Zhi Ding Moncef Gabbouj Peter Grant Ferran Marqués Marc Moonen Hideaki Sakai Giovanni Sicuranza Sergios Theodoridis Valery A. Zheludev

Contents Preface ix 1. Wavelet and frame transforms originated from continuous and discrete splines, Amir Z. Averbuch and Valery A. Zheludev 1 1.1. Introduction 1 1.2. Preliminaries 4 1.3. Prediction filters originated from splines 9 1.4. Biorthogonal wavelet transforms generated by filter banks with downsampling factor N = 2 (diadic transforms) 17 1.5. Application of spline-based wavelet trans...

2014
Harpreet Kaur R. C. Mittal Vinod Mishra

In this paper, we present a numerical scheme using uniform Haar wavelet approximation and quasilinearization process for solving some nonlinear oscillator equations. In our proposed work, quasilinearization technique is first applied through Haar wavelets to convert a nonlinear differential equation into a set of linear algebraic equations. Finally, to demonstrate the validity of the proposed m...

Journal: :IEICE Transactions 2005
Yasunari Yokota Xiaoyong Tan

This paper analytically formulates both the optimal quantization noise allocation ratio and the coding gain of the two-dimensional morphological Haar wavelet transform. The two-dimensional morphological Haar wavelet transform has been proposed as a nonlinear wavelet transform. It has been anticipated for application to nonlinear transform coding. To utilize a transformation to transform coding,...

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