fast Fourier transform


Also found in: Acronyms, Encyclopedia, Wikipedia.

fast Fourier transform

An MRI term for a very fast and efficient computational method of performing a Fourier transform—the mathematical process by which raw data is processed into a usable image.
References in periodicals archive ?
In those cases, a feasible method is to use the convolution theorem and fast Fourier transforms.
in computerised tomography [18, 32, 34, 29, 28], for fast summation algorithms [35, 36, 23], for moving least squares approximation [12], as fast Fourier transform on the sphere [25], or as part of the ridgelet and curvelet transforms [27, 6].
Instead, we will use a fast summation algorithm [14] that is based on the Nonequispaced Fast Fourier Transform (NFFT) [17].
The Fast Fourier Transform module represents an advancement in process control for spunbonded producers by offering machine directional control in addition to cross web directional control.
The latest software version features new add-on capabilities-Trimble eCognition software integration, support for non-Trimble total stations and frequency domain analysis based on Fast Fourier Transform calculations-to better analyze complex data communicated from a broad range of sensors and enable better decision making.
A Fast Fourier Transform (FFT) is applied to successive sample sets of the incoming data and displayed graphically.
della Calabria, Italy) use their own extensive research on this system to present, via DVD-ROM, over 900 "chaotic attractors" through 3D color images, time series and fast Fourier transform algorithms.
This pressure map is converted to a digital image and analyzed with fast Fourier transform (FFT) image analysis techniques to quantify its separate periodic and stochastic components.
It is more efficient to implement Fast Fourier Transform using (2.
02 is said to offer a new Fast Fourier Transform feature, reaction force and maximum stress functions and improved display options.
To use the gauge as a troubleshooting tool, the data are fed into a spectral analyzer via an RS232 port for an on-line Fast Fourier Transform (FFT) analysis.
Full browser ?