Fourier transform of non-square image

[djc11]

Hello,

I'm trying to compute the FFT of a greyscale image (1920x1200 pixels) but I cannot find a way to do this do an image that isn't perfectly square.
Any help would be much appreciated thanks.

Regards
DJC

[rpursley8]

I don't see any limitation with that respect when I do an image FFT.

The IMAQ FFT function works fine with my image (2272x1704).  You do need a complex image type though.

In addition the FFT function is orthogonal so if you wanted to, you can convert the image to an array and perform an FFT on each row of the image and then one on each column and get the 2D answer you are looking for.



Message Edited by rpursley8 on 02-08-2008 10:30 AM