Re: [oc] 2D FFT using radix 4 complex fft

[shoe.man@freenet.de]

As I need a 2D ("Spatial") FFT for image processing, could anybody post an example code, e.g. a wrapper for the "radix4 complex fft" from Zhaom. 
Thanks very much in advance.
---------------------------
Zhaom, thanks very much for your reply.

Do you have some example code for utilizing this core for 2D images? Any help is greatly appreciated!


>The "radix 4 complex fft" core do not need multiplier,
>It use cordic to realize complex rotation.

>Zhaom
----- Original Message ----- 
From: <shoe.man@freenet.de>
To: <cores@opencores.org>
Sent: Monday, July 21, 2003 4:27 PM
Subject: [oc] 2D FFT using radix 4 complex fft


> Could anybody help me in how to implement a 2D FFT core for image
> processing by 2 times instantiation of the "radix 4 complex fft" core? 
> (which runs in 1D and is temporal instead of spatial)
> 
> Additionally, what changes have to be done to utilize the Virtex-II
> multipliers here?
> 
> Thanks very much!
> 




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