Results 91 to 100 of about 2,506 (223)
Modified Thresholding Technique to Compress Images Using Haar Wavelets
, 1997 Wavelets are functions that can be used to represent images. Not only are wavelets used to represent images, they are also used to compress them. Many different types of wavelets are available for compression, however this research focuses on Haar ...
Zeleznik, Heidi
core
HAAR WAVELET ANALYSIS OF CLIMATIC TIME SERIES
International Journal of Wavelets, Multiresolution and Information Processing, 2014 In order to extract the intrinsic information of climatic time series from background red noise, in this paper, we will first give an analytic formula on the distribution of Haar wavelet power spectra of red noise in a rigorous statistical framework. After that, by comparing the difference of wavelet power spectra of real climatic time series and red ...
Zhang, Zhihua +2 more
openaire +2 more sources
Joint Kalman–Haar Algorithm Applied to Signal Processing
Revista de Matemática: Teoría y Aplicaciones, 2012 Under the analysis of signals disturbed by noise, in this paper we propose a working methodology aimed to seize the best estimate of combining Kalman filtering with the characterization that is achieved by applying a multiresolution analysis (MRA) using ...
Alejandro Viegener +8 more
doaj +1 more source
Wavelets de Haar y Daubechies y sus aplicaciones [PDF]
, 2018 Treball Final de Grau en Matemàtica Computacional. Codi: MT1030. Curs: 2017/2018El análisis de señales se aplica a diferentes campos de estudios y una forma de extraer y tratar la información de estas señales es a través de las wavelets.
Olivera Rodríguez, Nahuel
core
Estimation of Delay Time in Linear Dynamic Systems Using Wavelets [PDF]
المجلة العراقية للعلوم الاحصائيةThis research explores the use of wavelets in estimating delay time in stochastic linear dynamic systems, as delay time plays a crucial role in diagnosing the system by determining the time interval between inputs and outputs.
Reem Taha +2 more
doaj +1 more source
Non-parametric linear time-invariant system identification by discrete wavelet transforms
, 2006 We describe the use of the discrete wavelet transform (DWT) for non-parametric linear time-invariant system identification. Identification is achieved by using a test excitation to the system under test (SUT) that also acts as the analyzing function for ...
Luk, RWP +3 more
core +1 more source
Results in Physics, 2018 It is remarkably known that one of the difficulties encountered in a numerical method for hyperbolic heat conduction equation is the numerical oscillation within the vicinity of jump discontinuities at the wave front.
Suazlan Mt Aznam, M.S.H. Chowdhury
doaj +1 more source
Funções wavelets de haar e aplicações
, 2014 Resumo: Neste trabalho, apresenta-se um estudo de bases ortogonais wavelets, com ênfase no sistema de Haar e suas aplicações. Inicialmente é feita uma breve revisão de conceitos, partindo em seguida para resultados da análise de multirresolução para ...
Wisniewski, Felipe
core
Multi-Resolution Wavelet-Transformed Image Analysis of Histological Sections of Breast Carcinomas
Cellular Oncology, 2005 Multi-resolution images of histological sections of breast cancer tissue were analyzed using texture features of Haar- and Daubechies transform wavelets.
Hae-Gil Hwang +5 more
doaj +1 more source
Optimizing pantograph fractional differential equations: A Haar wavelet operational matrix method
Partial Differential Equations in Applied MathematicsIn this study, we developed an operational matrix method of integration using Haar wavelets to solve both linear and nonlinear pantograph fractional differential equations by taking Atangana's beta derivative.
Najeeb Alam Khan +5 more
doaj +1 more source