Results 1 to 10 of about 17,052 (308)
tomoCAM: fast model-based iterative reconstruction via GPU acceleration and non-uniform fast Fourier transforms [PDF]
Journal of Synchrotron RadiationX-ray-based computed tomography is a well established technique for determining the three-dimensional structure of an object from its two-dimensional projections.
Dinesh Kumar +2 more
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Nonlinearizad of Fast Fourier Transform
Цифровые модели и решения, 2023 A unified mathematical form of reversible nonlinear transformations based on a nonlinear tensor product is presented in the form of fast algorithms.
Valeriy Labunets +2 more
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New many-parameter Fourier–Clifford transforms
Цифровые модели и решения, 2023 The article shows how ordinary complex-valued Fourier transforms are extended to Cliffordean-valued many-parameter Fourier transforms (MPFCTs). Each MPFCT depends on finite set of independent parameters (angles), which could be changed independently one ...
V. G. Labunets +2 more
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The Discrete Fourier Transform Over the Binary Finite Field
IEEE Access, 2023 The novel methods for binary discrete Fourier transform (DFT) computation over the finite field have been proposed. The methods are based on a binary trace calculation over the finite field and use the cyclotomic DFT.
Sergei Valentinovich Fedorenko
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Efficient Algorithm for Finding Roots of Error-Locator Polynomials
IEEE Access, 2021 A novel method for finding roots of polynomials over finite fields has been proposed. This method is based on the cyclotomic discrete Fourier transform algorithm. The improvement is achieved by using the normalized cyclic convolutions, which have a small
Sergei Valentinovich Fedorenko
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A Spectral Algorithm for Decoding Systematic BCH Codes
IEEE Access, 2022 A novel method of spectral decoding for systematic BCH codes has been proposed. This method has a simple description and a small computational complexity.
Sergei Valentinovich Fedorenko
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Algorithms, 2022 We consider the numerical solution of the discrete multi-marginal optimal transport (MOT) by means of the Sinkhorn algorithm. In general, the Sinkhorn algorithm suffers from the curse of dimensionality with respect to the number of marginals.
Fatima Antarou Ba, Michael Quellmalz
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New Algorithm for Real-Valued Fourier Transform
Tikrit Journal of Engineering Sciences, 2023 This paper presents a direct algorithm for fast real discrete Fourier transform (RDFT) computing, using the discrete Fourier transform (DFT) conjugate symmetric property to reduce redundancies.
Sukaina K. Salih, Mounir T. Hamood
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Single Image Raindrop Removal Using a Non-Local Operator and Feature Maps in the Frequency Domain
IEEE Access, 2022 Taking a photo on a rainy day may result in a photo with raindrops. Images containing raindrops have a significant impact on the visual impression and accuracy when applied to image recognition systems.
Shinya Ezumi, Masaaki Ikehara
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IET Computers & Digital Techniques, 2021 Fast Fourier transform (FFT) is the most common low‐complexity implementation of the discrete Fourier transform, intensively employed to process real‐world signals in smart sensors for the internet of things.
Guilherme Ferreira +6 more
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