Need help : IMAQ IFFT showing error

[sree99]

while executing Inverse FFT an error pops up.Please  help me  by possible solutions. Thanks in advance...

[BruceAmmons]

If you are doing an inverse FFT, the input image has to be Complex Single.  It won't work with other image types.  Are you sure you don't want the FFT instead?

Bruce

[sree99]

Hi Bruce, Thanks for your reply..

I tried IMAQ FFT and showed no error. But in my code I have to take the Inverse Fourier Transform of the Image( converted frm the array as shown in th image). Using FFT for IFFT is a Right soln.

[BruceAmmons · Accepted solution]

If you need the inverse FFT, then use the inverse FFT.  I just wanted to make sure you had the right function.

Change the type of your input image to Complex Single, and it should work.

Bruce

[sree99]

Thnx Bruce I got it right..

I have 2 more questions

1) The array (2D) multiplication I did in the pgm is correct?? or I have to go for matrix multiplication

2) How to input an image to math script?

[Klemen]

Hello,

the basic multiplication is performed element-by-element whereas the matrix operations are different.

To use the mathscript node, please see the image below:

Note that mathscript nodes are slower than native functions or .dll's.

Best regards,

K

[sree99]

THNX  klemen!!