Results 21 to 30 of about 1,413 (221)
A novel glaucomatous representation method based on Radon and wavelet transform
BMC Bioinformatics, 2019 Background Glaucoma is an irreversible eye disease caused by the optic nerve injury. Therefore, it usually changes the structure of the optic nerve head (ONH).
Beiji Zou +6 more
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 Enhancement of vessel detection performance in synthetic aperture radar (SAR) images generated academic advancements related to amelioration of the algorithmic accuracy and training data procurement.
Juyoung Song +3 more
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Discretization of the radon transform and of its inverse by spline convolutions [PDF]
IEEE Transactions on Medical Imaging, 2002 We present an explicit formula for B-spline convolution kernels; these are defined as the convolution of several B-splines of variable widths h(i) and degrees n(i). We apply our results to derive spline-convolution-based algorithms for two closely related problems: the computation of the Radon transform and of its inverse.
Stefan Horbelt +2 more
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Sensors, 2023 In this work, two methods are proposed for solving the problem of one-dimensional barcode segmentation in images, with an emphasis on augmented reality (AR) applications. These methods take the partial discrete Radon transform as a building block.
Óscar Gómez-Cárdenes +4 more
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Analyse des signaux multicomposante à modulation de fréquence linéaire par la transformation de Teager-Huang-Hough [PDF]
, 2014 A novel detection approach of linear FM (LFM) signals, with single or multiple components, in the time-frequency plane of Teager-Huang (TH) transform is presented.
BOUDRAA, Abdelouahab +4 more
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Compressive Sensing Approach to Harmonics Detection in the Ship Electrical Network
Sensors, 2020 The contribution of this paper is to show the opportunities for using the compressive sensing (CS) technique for detecting harmonics in a frequency sparse signal. The signal in a ship’s electrical network, polluted by harmonic distortions, can be modeled
Beata Palczynska +2 more
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A Multi-Frequency Tomographic Inverse Scattering Using Beam Basis Functions
Sensors, 2022 We present an overview of a beam-based approach to ultra-wide band (UWB) tomographic inverse scattering, where beam-waves are used for local data-processing and local imaging, as an alternative to the conventional plane-wave and Green’s function ...
Ram Tuvi
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Exact image representation via a number‐theoretic Radon transform
IET Computer Vision, 2014 This study presents an integer‐only algorithm to exactly recover an image from its discrete projected views that can be computed with the same computational complexity as the fast Fourier transform (FFT). Most discrete transforms for image reconstruction
Shekhar Chandra, Imants Svalbe
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On the Range of the Radon Transform on Zn and the Related Volberg’s Uncertainty Principle
Journal of Mathematics, 2015 We characterize the image of exponential type functions under the discrete Radon transform R on the lattice Zn of the Euclidean space Rn n≥2. We also establish the generalization of Volberg's uncertainty principle on Zn, which is proved by means of this
Ahmed Abouelaz +2 more
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Discrete fractional Radon transforms and quadratic forms [PDF]
Duke Mathematical Journal, 2012 We consider discrete analogues of fractional Radon transforms involving integration over paraboloids defined by positive definite quadratic forms. We prove that such discrete operators extend to bounded operators from $\ell^p$ to $\ell^q$ for a certain family of kernels.
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