Results 1 to 10 of about 584,919 (306)
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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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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Advances in Mechanical Engineering, 2019 The rolling element bearing is one of the most critical components in a machine. Vibration signals resulting from these bearings imply important bearing defect information related to the machinery faults.
Hsiung-Cheng Lin, Yu-Chen Ye
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Suppression law of quantum states in a 3D photonic fast Fourier transform chip. [PDF]
Nat Commun, 2016 The identification of phenomena able to pinpoint quantum interference is attracting large interest. Indeed, a generalization of the Hong–Ou–Mandel effect valid for any number of photons and optical modes would represent an important leap ahead both from ...
Crespi A +9 more
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The Use of Continuous Wavelet Transform Based on the Fast Fourier Transform in the Analysis of Multi-channel Electrogastrography Recordings. [PDF]
J Med Syst, 2016 This paper presents the analysis of multi-channel electrogastrographic (EGG) signals using the continuous wavelet transform based on the fast Fourier transform (CWTFT). The EGG analysis was based on the determination of the several signal parameters such
Komorowski D, Pietraszek S.
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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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Processes, 2020 In response to the high demand of the operation reliability and predictive maintenance, health monitoring and fault diagnosis and classification have been paramount for complex industrial systems (e.g., wind turbine energy systems).
Yichuan Fu +4 more
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A parallel non-uniform fast Fourier transform library based on an "exponential of semicircle" kernel [PDF]
SIAM Journal on Scientific Computing, 2018 The nonuniform fast Fourier transform (NUFFT) generalizes the FFT to off-grid data. Its many applications include image reconstruction, data analysis, and the numerical solution of differential equations. We present FINUFFT, an efficient parallel library
A. Barnett +2 more
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