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Ultrasound Assessment of Honey Using Fast Fourier Transform [PDF]
Sensors, 2021 Ultrasound inspection permits the characteristics of some foodstuffs to be determined easily and cheaply. This experimental study included the determination of various ultrasound parameters provided by the fast Fourier transform (FFT) which had not ...
Montaña Rufo +3 more
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An ultra-precise Fast Fourier Transform
Measurement: Sensors, 2022 The Fast Fourier Transform (FFT) is a cornerstone of digital signal processing, generating a computationally efficient estimate of the frequency content of a time series.
Manus Henry
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Computation of the normalized cross-correlation by fast Fourier transform. [PDF]
PLoS ONE, 2018 The normalized cross-correlation (NCC), usually its 2D version, is routinely encountered in template matching algorithms, such as in facial recognition, motion-tracking, registration in medical imaging, etc. Its rapid computation becomes critical in time
Artan Kaso
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Accelerating the Nonuniform Fast Fourier Transform [PDF]
SIAM Review, 2004 Summary: The nonequispaced Fourier transform arises in a variety of application areas, from medical imaging to radio astronomy to the numerical solution of partial differential equations. In a typical problem, one is given an irregular sampling of \(N\) data in the frequency domain and one is interested in reconstructing the corresponding function in ...
Leslie Greengard, June-Yub Lee
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Fast Complexified Quaternion Fourier Transform [PDF]
IEEE Transactions on Signal Processing, 2008 A discrete complexified quaternion Fourier transform is introduced. This is a generalization of the discrete quaternion Fourier transform to the case where either or both of the signal/image and the transform kernel are complex quaternion-valued. It is shown how to compute the transform using four standard complex Fourier transforms and the properties ...
Salem Said +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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Engineering Proceedings, 2023 For front-end wireless applications in small battery-powered devices, discrete Fourier transform (DFT) is a critical processing method for discrete time signals. Advanced radix structures are created to reduce the impact of transistor malfunction.
Ernest Ravindran Ramaswami Sachidanandan +2 more
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Fast and direct inversion methods for the multivariate nonequispaced fast Fourier transform
Frontiers in Applied Mathematics and Statistics, 2023 The well-known discrete Fourier transform (DFT) can easily be generalized to arbitrary nodes in the spatial domain. The fast procedure for this generalization is referred to as nonequispaced fast Fourier transform (NFFT). Various applications such as MRI
Melanie Kircheis, Daniel Potts
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Quartz-Tuning-Fork-Enhanced Spectroscopy Based on Fast Fourier Transform Algorithm
Frontiers in Physics, 2020 In this paper, a gas sensing technique based on quartz-crystal-tuning-fork-enhanced spectroscopy (QCTFES) and wavelength modulation spectroscopy (WMS) is reported.
Guangxiang Yang +3 more
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FourierPIM: High-throughput in-memory Fast Fourier Transform and polynomial multiplication
Memories - Materials, Devices, Circuits and Systems, 2023 The Discrete Fourier Transform (DFT) is essential for various applications ranging from signal processing to convolution and polynomial multiplication. The groundbreaking Fast Fourier Transform (FFT) algorithm reduces DFT time complexity from the naive O(
Orian Leitersdorf +4 more
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