نتایج جستجو برای: haar wavelet

تعداد نتایج: 39487  

Journal: :CoRR 2014
Sodeif Ahadpour Yaser Sadra

In this paper, after reviewing the main points of Haar wavelet transform and chaotic trigonometric maps, we introduce a new perspective of Haar wavelet transform. The essential idea of the paper is given linearity properties of the scaling function of the Haar wavelet. With regard to applications of Haar wavelet transform in image processing, we introduce chaotic trigonometric Haar wavelet tran...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده ریاضی و کامپیوتر 1392

این تحقیق قصد دارد تا میزان توانایی تبدیل موجک هار (haar) را در پیشبینی دادههای سریزمانی مالی مورد ارزیابی قرار دهد. بههمین منظور دادههای بورس نزدک را از سایت یاهو فاینانس انتخاب کرده و سریزمانی بازدهی این دادهها را ابتدا توسط مدل garch پیشبینی، و نتایج را ثبت کرده ایم و سپس همان سری دادهها را با استفاده از تبدیل موجک هار (haar) تبدیل و با استفاده از مدل arima این دادههای تبدیل یافته را نیز، پی...

2008
S. J. Park

In this paper, Haar wavelet based identification of a continuous-time linear time-varying (LTV) system is proposed. For that purpose, input and output data are analyzed to derive an algebraic equation, leading to estimation of Haar wavelet coefficients for the impulse response. Finally, it is demonstrated that an LTV system can be effectively identified by solving the algebraic equation and by ...

2015
SangeetBhuwal Amandeep Mahesh Kumar

The tenacity of this paper is logical investigation of prevailing ANPR system research by cataloguing existing methods analyzing and equate old and new techniques. Automatic number plate recognition is a technique to read character from image and isolate number using various processes and practices. Automatic number plate credit is a image processing techniques. In this paper we used efficient ...

In this study, the thermal performance analysis of porous fin with temperature-dependent thermal conductivity and internal heat generation is carried out using Haar wavelet collocation method. The effects of various parameters on the thermal characteristics of the porous fin are investigated. It is found that as the porosity increases, the rate of heat transfer from the fin increases and the th...

Journal: :international journal of mathematical modelling and computations 0
morteza khodabin karaj branch, islamic azad university iran, islamic republic of khosrow maleknejad iran, islamic republic of mohsen fallahpour iran, islamic republic of

in this paper, we introduce an efficient method based on haar wavelet to approximate a solutionfor the two-dimensional linear stochastic fredholm integral equation. we also give an example to demonstrate the accuracy of the method.

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...

2012
Mingxu Yi Yiming Chen

In this paper, Haar wavelet operational matrix method is proposed to solve a class of fractional partial differential equations. We derive the Haar wavelet operational matrix of fractional order integration. Meanwhile, the Haar wavelet operational matrix of fractional order differentiation is obtained. The operational matrix of fractional order differentiation is utilized to reduce the initial ...

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,...

2006
Bo Zhang Jalal M. Fadili

In this paper, we present the estimation of Poisson intensity based on hypothesis testing in the wavelet domain for any dimensional data. The testing framework for wavelet-based Poisson intensity estimation was first introduced by Kolaczyk, where a thresholding estimator, which realizes the hypothesis testing, is derived for Haar wavelet coefficients. Here we propose for the same wavelet a new ...

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