centered Fourier transforms

Versione 3.2.0.0 (24,7 KB) da Tatiana Latychevskaia
1d, 2d and 3d centered Fourier transforms
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Aggiornato 10 giu 2017

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Fast Fourier transforms ofter require use of "fftshift" command.
Here are routines for 1d, 2d and 3d centered Fourier and inverse Fourier transforms which do not require "fftshift" command. These Fourier transforms are for signals whose center is at the origin of coordinate system, as for example a wavefront distribution with its center on the optical axis.
The algorithms for these Fourier transforms are described in
Tatiana Latychevskaia and Hans-Werner Fink
"Practical algorithms for simulation and reconstruction of digital in-line holograms",
Appl. Optics 54, 2424 - 2434 (2015)

Cita come

Tatiana Latychevskaia (2024). centered Fourier transforms (https://www.mathworks.com/matlabcentral/fileexchange/55929-centered-fourier-transforms), MATLAB Central File Exchange. Recuperato .

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FTs/

Versione Pubblicato Note della release
3.2.0.0

shifts by 1 pixel in 1d and 3d FTs are corrected
3.1.0.0

shifts by 1 pixels are corrected in 1d and 3d FT
3.0.0.0

corrected 3d FT
2.0.0.0

3d added
1.0.0.0