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Measurement: Sensors
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
doaj +1 more source

A Multi-Resolution Texture Image Retrieval Using Fast Fourier Transform

The Journal of Engineering Research, 2010
Texture is an important visual property that characterizes a wide range of natural and artificial images which makes it a useful feature for retrieving images. Several approaches have been proposed to describe the texture contents of an image.
A. Abdesselam
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Separation of Variables and the Computation of Fourier Transforms on Finite Groups, II [PDF]

Discrete Mathematics & Theoretical Computer Science, 2020
We present a general diagrammatic approach to the construction of efficient algorithms for computingthe Fourier transform of a function on a finite group.
David Maslan, Daniel N. Rockmore, Sarah Wolff +2 more
doaj +1 more source

An investigation of pulsar searching techniques with the Fast Folding Algorithm

, 2017
Here we present an in-depth study of the behaviour of the Fast Folding Algorithm, an alternative pulsar searching technique to the Fast Fourier Transform.
Barr, E. D. +4 more
core +1 more source

Higher Order Convergent Fast Nonlinear Fourier Transform

, 2017
It is demonstrated is this letter that linear multistep methods for integrating ordinary differential equations can be used to develop a family of fast forward scattering algorithms with higher orders of convergence.
Vaibhav, Vishal
core +1 more source

GESPAR: Efficient Phase Retrieval of Sparse Signals [PDF]

, 2013
We consider the problem of phase retrieval, namely, recovery of a signal from the magnitude of its Fourier transform, or of any other linear transform. Due to the loss of the Fourier phase information, this problem is ill-posed.
Beck, Amir, Eldar, Yonina C., Shechtman, Yoav +2 more
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3D Non-Uniform Fast Fourier Transform Program Optimization

Applied Sciences
MRI (magnetic resonance imaging) technology aims to map the internal structure image of organisms. It is an important application scenario of Non-Uniform Fast Fourier Transform (NUFFT), which can help doctors quickly locate the lesion site of patients ...
Kai Nie +4 more
doaj +1 more source

Fast Fourier Transform Simulation Techniques for Coulomb Gases

, 2005
An improved approach to updating the electric field in simulations of Coulomb gases using the local lattice technique introduced by Maggs and Rossetto, is described and tested.
A. Duncan +22 more
core +1 more source

INFFTM: Fast evaluation of 3d Fourier series in MATLAB with an application to quantum vortex reconnections [PDF]

, 2016
Although Fourier series approximation is ubiquitous in computational physics owing to the Fast Fourier Transform (FFT) algorithm, efficient techniques for the fast evaluation of a three-dimensional truncated Fourier series at a set of \emph{arbitrary ...
Caliari, Marco, Zuccher, Simone
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Pioglitazone plus (−)‐epigallocatechin gallate: a novel approach to enhance osteogenic performance in aged bone marrow mesenchymal stem cells

FEBS Open Bio, EarlyView.
Aged human bmMSCs are seeded in the scaffold. Osteoblastic induction can slightly increase cell's bone‐forming activity to produce bone‐like tissues, shown as the sporadic xylenol orange‐stained spots (the lower left image). Notably, pioglitazone plus EGCG co‐treatment dramatically increases cell's bone‐forming activity and bone‐like tissue production (
Ching‐Yun Chen +6 more
wiley +1 more source

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