Results 11 to 20 of about 2,323 (178)
Weighted Haar wavelets on the sphere
International Journal of Wavelets, Multiresolution and Information Processing, 2007 Starting from the one-dimensional Haar wavelets on the interval [0, 1], we construct spherical Haar wavelets which are orthogonal with respect to a given scalar product.
Rosca, Daniela-Dorina
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Haar Wavelets in Data Analysis
Advanced Materials Research, 2010 One century ago (1910), the Hungarian mathematician Alfred Haar introduced the simplest wavelets in approximation theory, which are now known as the Haar wavelets. This type of wavelets can effectively be used to fit data in statistical applications.
Yong Ge Tian +2 more
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Time-modulated arrays with Haar wavelets
IEEE Antennas and Wireless Propagation Letters, 2020 Time-modulated arrays (TMAs) can effectively perform beamsteering over the first positive harmonic pattern by applying progressively delayed versions of stair-step approximations of a sine waveform to the antenna excitations.
Brégains, J. +3 more
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Solving PDEs with the aid of two-dimensional Haar wavelets
Computers and Mathematics With Applications, 2011 Two-dimensional Haar wavelets are applied for solution of the partial differential equations (PDEs). The proposed method is mathematically simple and fast.
U Lepik
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Haar wavelets: with applications
, 2014 This is the first book to present a systematic review of applications of the Haar wavelet method for solving Calculus and Structural Mechanics problems. Haar wavelet-based solutions for a wide range of problems, such as various differential and integral ...
Hein, Helle, Lepik, Ülo
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WE-UNet: A Wavelet-enhanced U-Net framework for radiation dose reduction in chest radiography. [PDF]
J Appl Clin Med PhysAbstract Background Reducing ionizing radiation exposure is a critical goal guided by the as‐low‐as‐reasonably‐achievable (ALARA) principle. Aggressively lowering radiation doses in radiography, however, amplifies image noise, compromising diagnostic quality.
Cohen EI +9 more
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Numerical solution of nonlinear Fredholm and Volterra integrals by newton-Kantorovich and Haar wavelets methods [PDF]
, 2020 The current study proposes a numerical method which solves nonlinear Fredholm and Volterra integral of the second kind using a combination of a Newton–Kantorovich and Haar wavelet.
Bachok, Norfifah +7 more
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Perturbations of the Haar wavelet [PDF]
Proceedings of the American Mathematical Society, 1997 Summary: Let \(m \in Z^+\) be given. For any \(\varepsilon > 0\) we construct a function \(f^{\{\varepsilon \}}\) having the following properties: (a) \(f^{\{\varepsilon \}}\) has support in \([-\varepsilon , 1 + \varepsilon ]\). (b) \(f^{\{\varepsilon \}} \in C^m(-\infty , \infty)\).
Govil, N. K., Zalik, R. A.
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Haar wavelets method for solving Pocklington's integral equation [PDF]
, 1991 summary:A simple and effective method based on Haar wavelets is proposed for the solution of Pocklington’s integral equation. The properties of Haar wavelets are first given.
G. Beylkin +6 more
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Inpainting by Flexible Haar-Wavelet Shrinkage [PDF]
SIAM Journal on Imaging Sciences, 2008 We present novel wavelet-based inpainting algorithms. Applying ideas from anisotropic regularization and diffusion, our models can better handle degraded pixels at edges. We interpret our algorithms within the framework of forward-backward splitting methods in convex analysis and prove that the conditions for ensuring their convergence are fulfilled ...
Raymond H. Chan +2 more
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