FFT of an image

[Mathew]

Hello

I have an image of size M X N (pixel).

Fisrt of all i have read the image from the path location. Then I used Unflatten Pixmap VI to convert the image to array. Now i need to find the 2 D FFT. I have to do the FFT by fist computing the transforms of the rows in parallel and then the transforms of the columns of the result. For that i extracted the N Resolution value and gave it to ta for loop ( since there are N rows for the image.) Then I calculated the FFT for these rows. The resulting array is transposed to do the FFT for the columns. Is the VI i made correct? Please see the attchement for the image.

How can i get the 2D- FFT plot ?

Thankss

[MikaelH]

Try this:

Cheers,

Mikael

[Nanxiong Zhang]

What version of LabVIEW are you using? After LabVIEW 8.0, The FFT.vi supports 2D input. FFT.vi on the Signal Processing>>Transform palette is a polymorphic VI. You can link either 1D or 2D data to it.

[MikaelH]

QUOTE (Nanxiong Zhang @ Nov 20 2008, 11:53 AM)

What version of LabVIEW are you using? After LabVIEW 8.0, The FFT.vi supports 2D input. FFT.vi on the Signal Processing>>Transform palette is a polymorphic VI. You can link either 1D or 2D data to it.

8.5

//mikael