نتایج جستجو برای: multiplicative approach

تعداد نتایج: 1301778  

2013
Pedro A. A. Penna Nelson D. A. Mascarenhas

Image denoising approaches have attracted many researchers. The main tackled problem is the removal of additive Gaussian noise. However, it is very important to expand the filters capacity to other types of noise, for example the multiplicative noise of SAR images. The state of the art methods in this area work with patch similarity. This paper shows a new approach for speckle removal based on ...

2012
G. Radhamani

Problem statement: One of the most common degradations in medical images is their poor contrast quality and noise. The DICOM image consists of speckle (multiplicative noise). While the image is enhanced, the multiplicative noise present in the image is also enhanced. Approach: This study describes the hybrid method to improve the image quality of Digital Imaging and Communications in Medicine (...

Journal: :IOP conference series 2022

Abstract Since the charging processes of electric vehicles are stochastic and time-dependent, paper views an approach based on a statistical analysis real data electricity consumption at station connection points. Other types (geographical, public sites, distance between individual stations, etc.) also taken into account when making analysis. Multiplicative models most suitable for studying for...

Journal: :SIAM J. Math. Analysis 2011
Sandra Cerrai

We prove the validity of an averaging principle for a class of systems of slow-fast reaction-diffusion equations with the reaction terms in both equations having polynomial growth, perturbed by a noise of multiplicative type. The models we have in mind are the stochastic Fitzhugh– Nagumo equation arising in neurophysiology and the Ginzburg–Landau equation arising in statistical mechanics.

2007
Huanshui Zhang Xiao Lu Weihai Zhang Wei Wang

Abstract: The paper deals with the Kalman stochastic filtering problem for linear continuoustime systems with both instantaneous and time-delayed measurements. Different from the standard linear system, the system state is corrupted by multiplicative white noise, and the instantaneous measurement and the delayed measurement are also corrupted by multiplicative white noise. A new approach to the...

2015
Zhaojuan Wang Shengfan Zhou Z. J. Wang S. F. Zhou

In this paper we study the asymptotic dynamics of the stochastic strongly damped wave equation with multiplicative noise under homogeneous Dirichlet boundary condition. We investigate the existence of a compact random attractor for the random dynamical system associated with the equation.

Journal: :RASI 2013
Juan David Velásquez Henao Viviana Maria Rueda Mejia Carlos Jaime Franco Cardona

The combination of SARIMA and neural network models are a common approach for forecasting nonlinear time series. While the SARIMA methodology is used to capture the linear components in the time series, artifi cial neural networks are applied to forecast the remaining nonlinearities in the shocks of the SARIMA model. In this paper, we propose a simple nonlinear time series forecasting model by ...

2010
REINHARD BÖRGER

We present a general treatment of measures and integrals in certain (monoidal closed) categories. Under appropriate conditions the integral can be defined by a universal property, and the universal measure is at the same time a universal multiplicative measure. In the multiplicative case this assignment is right adjoint to the formation of the Boolean algebra of idempotents. Now coproduct prese...

2016
Norden E. Huang Kun Hu Albert C. C. Yang Hsing-Chih Chang Deng Jia Wei-Kuang Liang Jia Rong Yeh Chu-Lan Kao Chi-Hung Juan Chung Kang Peng Johanna H. Meijer Yung-Hung Wang Steven R. Long Zhauhua Wu

The Holo-Hilbert spectral analysis (HHSA) method is introduced to cure the deficiencies of traditional spectral analysis and to give a full informational representation of nonlinear and non-stationary data. It uses a nested empirical mode decomposition and Hilbert-Huang transform (HHT) approach to identify intrinsic amplitude and frequency modulations often present in nonlinear systems. Compari...

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