centered Fourier transforms

バージョン 3.2.0.0 (24.7 KB) 作成者: Tatiana Latychevskaia

1d, 2d and 3d centered Fourier transforms

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更新 2017/6/10

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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)

引用

Tatiana Latychevskaia (2024). centered Fourier transforms (https://www.mathworks.com/matlabcentral/fileexchange/55929-centered-fourier-transforms), MATLAB Central File Exchange. 取得済み April 18、2024.

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FTs/

バージョン	公開済み	リリースノート
3.2.0.0	2017/6/10	shifts by 1 pixel in 1d and 3d FTs are corrected	ダウンロード
3.1.0.0	2017/6/10	shifts by 1 pixels are corrected in 1d and 3d FT	ダウンロード
3.0.0.0	2016/10/28	corrected 3d FT	ダウンロード
2.0.0.0	2016/10/16	3d added	ダウンロード
1.0.0.0	2016/3/12		ダウンロード