2D Fourier shift

Version 1.1.0.0 (1,54 ko) par Tim
Cyclically shift a 2D matrix or image using the Fourier shift theorem.
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Mise à jour 11 fév. 2010

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This shifts cyclically shifts an image or other 2D matrix by an arbitrary number of pixels (which can be fractional). I haven't tested it much but the code is very short so it should be easy enough to adapt.

Usage:

y = FourierShift(x, [delta_x delta_y])

x is the input matrix. y is the output. delta_x and _y are the shift amounts in each dimension.

It takes about 1s to run for a 1024x1024 image on my PC. There are faster ways to shift images, but probably not any simpler sub-pixel methods.

Citation pour cette source

Tim (2024). 2D Fourier shift (https://www.mathworks.com/matlabcentral/fileexchange/23440-2d-fourier-shift), MATLAB Central File Exchange. Récupéré le .

Compatibilité avec les versions de MATLAB
Créé avec R2008a
Compatible avec toutes les versions
Plateformes compatibles
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Version Publié le Notes de version
1.1.0.0

Added small fix for even-length signals.
1.0.0.0