Results 41 to 50 of about 20,542 (239)

A Comparative Study using Scale-2 and Scale-3 Haar Wavelet for the Solution of Higher Order Differential Equation [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2023
A comparative study of scale-2 and scale-3 Haar wavelet has been presented to illustrate the level of accuracy attained by both the wavelets by applying on higher order differential equations known as Emden fowler equation, which has great importance in ...
Ratesh Kumar, Jaya Gupta
doaj   +1 more source

DWT/PCA face recognition using automatic coefficient selection [PDF]

open access: yes, 2008
In PCA-based face recognition, there is often a trade-off between selecting the most relevant parts of a face image for recognition and not discarding information which may be useful.
Amira, A, Nicholl, P
core   +1 more source

Simulation of a non‐linear, time‐variant circuit using the Haar wavelet transform

open access: yesIET Science, Measurement & Technology, 2022
Wavelet theory has disentangled numerous complexities, including those pertinent to transient and steady‐state responses of systems, when Laplace and Fourier transforms face insoluble obstacles. Reactive linear components (e.g.
Georgios G. Roumeliotis   +2 more
doaj   +1 more source

Approximations to linear Klein–Gordon Equations using Haar wavelet

open access: yesAin Shams Engineering Journal, 2021
In this research article, two Haar wavelet collocation methods (HWCMs) (namely one dimensional HWCM and two dimensional HWCM) are adapted to approximate linear homogeneous and linear non-homogeneous Klein–Gordon equations.
Sana Ikram   +2 more
doaj   +1 more source

In-Band Disparity Compensation for Multiview Image Compression and View Synthesis [PDF]

open access: yes, 2010
This paper presents a novel framework to achieve scalable multiview image compression and view synthesis. The open-loop wavelet-lifting scheme for geometric filtering has been exploited to achieve signal-to-noise ratio scalability and view-type ...
Anantrasirichai, N   +3 more
core   +2 more sources

Comparison of KNN and SVM Algorithms in Facial Image Recognition Using Haar Wavelet Feature Extraction

open access: yesJurnal Riset Informatika, 2023
To process all the pixels in the face image, feature extraction can be performed using the Haar Wavelet method so that it processes identifiers with lower dimensions.
Neneng Rachmalia Feta
doaj   +1 more source

Source detection using a 3D sparse representation: application to the Fermi gamma-ray space telescope [PDF]

open access: yes, 2009
The multiscale variance stabilization Transform (MSVST) has recently been proposed for Poisson data denoising. This procedure, which is nonparametric, is based on thresholding wavelet coefficients. We present in this paper an extension of the MSVST to 3D
Anscombe   +25 more
core   +5 more sources

HAAR WAVELET METHOD FOR SOLVING STIFF DIFFERENTIAL EQUATIONS

open access: yesMathematical Modelling and Analysis, 2009
Application of the Haar wavelet approach for solving stiff differential equations is discussed. Solution of singular perturbation problems is also considered. Efficiency of the recommended method is demonstrated by means of four numerical examples, mostly taken from well‐known textbooks.
openaire   +4 more sources

Discrete differential operators in multidimensional Haar wavelet spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We consider a class of discrete differential operators acting on multidimensional Haar wavelet basis with the aim of finding wavelet approximate solutions of partial differential problems.
Carlo Cattani, Luis M. Sánchez Ruiz
doaj   +1 more source

Semi-Supervised Dim and Small Infrared Ship Detection Network Based on Haar Wavelet

open access: yesIEEE Access, 2021
Traditional deep learning detection network has poor effect on the detection of infrared dim and small targets on the sea in the case of interference or bad weather.
Zizhuang Song   +4 more
doaj   +1 more source

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