نتایج جستجو برای: discrete singular convolution dsc

تعداد نتایج: 235432  

Journal: :Proceedings of the American Mathematical Society 1977

Journal: :Mathematical Modelling and Numerical Analysis 2021

For the Maxwell’s equations in a Havriliak–Negami (H-N) dispersive medium, associated energy dissipation law has not been settled at both continuous level and discrete level. In this paper, we rigorously show that of H-N model can be bounded by initial is well-posed. We analyse backward Euler-type semi-discrete scheme, prove modified decays monotonically time. Such strong stability ensures sche...

Journal: :Journal of the American Mathematical Society 1996

Journal: :CoRR 2015
Xing Ouyang Cleitus Antony Fatima Gunning Hongyu Zhang Yong Liang Guan

 Abstract—Discrete trigonometric transformations, such as the discrete Fourier and cosine/sine transforms, are important in a variety of applications due to their useful properties. For example, one well-known property is the convolution theorem for Fourier transform. In this letter, we derive a discrete Fresnel transform (DFnT) from the infinitely periodic optical gratings, as a linear trigon...

Journal: :Bulletin of the American Mathematical Society 1982

Journal: :IJWMIP 2011
R. S. Pathak

Translation and convolution associated with discrete wavelet transform are investigated using properties of Calderón-Zygmund operator and Riesz fractional integral operator. Dual convolution is also studied. The wavelet convolution is applied to approximate functions belonging to certain p L-spaces.

2011
Xiaofan Li Yiqiong Li Meigen Zhang Tong Zhu

High-precision modeling of seismic-wave propagation in heterogeneous media is very important to seismological investigation. However, such modeling is one of the difficult problems in the seismological research fields. For developingmethods of seismic inversion and high-resolution seismic-wave imaging, the modeling problem must be solved as perfectly as possible. Moreover, for long-term computa...

2015
Tsegaselassie Workalemahu TSEGASELASSIE WORKALEMAHU Marina Arav Saeid Belkasim Frank Hall Zhongshan Li Michael Stewart Margo Alexander George Davis Lifeng Ding Donald Edwards Kyle Frantz Alexandra Smirnova

The Singular Value Decomposition (SVD) has many applications in image processing. The SVD can be used to restore a corrupted image by separating significant information from the noise in the image data set. This thesis outlines broad applications that address current problems in digital image processing. In conjunction with SVD filtering, image compression using the SVD is discussed, including ...

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