Results 31 to 40 of about 1,413 (221)
Discrete analogues of singular Radon transforms [PDF]
Bulletin of the American Mathematical Society, 1990 Let K be the Calderón-Zygmund convolution kernel on \({\mathbb{R}}^ k\) and P: \({\mathbb{R}}^ k\to {\mathbb{R}}^ n\) a polynomial map. Consider the transformation \(T(f)(x)=\int_{{\mathbb{R}}^ k}f(x-P(y))K(y)dy\) on the Schwartz space of \({\mathbb{R}}^ n\) as a generalized principal-value.
Stein, E. M., Wainger, S.
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Breast cancer detection using combined curvelet based enhancement and a novel segmentation methods
Biomedical Papers, 2015 Aim: This paper describes the digital implementation of a mathematical transform namely 2D Fast Discrete Curvelet Transform (FDCT) via UnequiSpaced Fast Fourier Transform (USFFT) in combination with the novel segmentation method for effective detection ...
Balasubramaniam Senthilkumar +1 more
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Light: Science & Applications, 2021 Limited-angle tomography of an interior volume is a challenging, highly ill-posed problem with practical implications in medical and biological imaging, manufacturing, automation, and environmental and food security.
Iksung Kang +2 more
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Adaptive Discrete Radon Transforms for Greyscale Images
Electronic Notes in Discrete Mathematics, 2003 Abstract The Discrete Radon Transform (DRT) sums intensities along digital rays in a 2D, p × p Euclidean function I(x, y) such as an image. The ray sums along the line x = my + t are mapped to projection space R(t,m). Due to the global integration of intensity in the Radon transform, it is often beneficial to perform the DRT on a local subset of the ...
Andrew Kingston, Imants D. Svalbe
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Radon-Augmented Sentinel-2 Satellite Imagery to Derive Wave-Patterns and Regional Bathymetry
Remote Sensing, 2019 Climatological changes occur globally but have local impacts. Increased storminess, sea level rise and more powerful waves are expected to batter the coastal zone more often and more intense.
Erwin W. J. Bergsma +2 more
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Image reconstruction technique using projection data from neutron tomography system
Alexandria Engineering Journal, 2015 Neutron tomography is a very powerful technique for nondestructive evaluation of heavy industrial components as well as for soft hydrogenous materials enclosed in heavy metals which are usually difficult to image using X-rays.
Waleed Abd el Bar +3 more
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The discrete sine transform and the spectrum of the finite q-ary tree. [PDF]
, 2005 We compute the spectrum of the finite q-ary tree using radon transforms and the discrete sine ...
SCARABOTTI, Fabio
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Sampling properties of the discrete radon transform
Discrete Applied Mathematics, 2004 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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𝐿^{𝑝} boundedness of discrete singular Radon transforms [PDF]
Journal of the American Mathematical Society, 2005 We prove that if K : R
Ionescu, Alexandru D., Wainger, Stephen
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Tailoring Phonon‐Driven Responses in α‐MoO3 through Isotopic Enrichment
Advanced Materials, EarlyView.ABSTRACT The implementation of polaritonic materials into nanoscale devices requires selective tuning of parameters to realize desired spectral or thermal responses. One robust material, α‐MoO3, an orthorhombic crystal boasting three distinct phonon dispersions, provides three polaritonic dispersions of hyperbolic phonon polaritons (HPhPs) across the ...
Thiago S. Arnaud +31 more
wiley +1 more source