Look more thoroughly at the AForge.NET documentation. It looks like the class
ComplexImage
supports 2D FFT:
http://www.aforgenet.com/framework/docs/html/8ec218c8-628b-e6b9-c398-3d65f14280d5.htm[
^].
If I'm not much mistaken, this is not the only way to use 2D FFT.
See also this CodeProject article:
2D FFT of an Image in C#[
^].
As you probably know, AForge.NET author
Andrew Kirillov is a CodeProject member. You can ask him your question if you post it as a comment in the section "Comments and Discussions" on the page of any if his articles.
http://www.codeproject.com/Articles/Andrew-Kirillov#Articles[
^].
Make sure you RTFM (which is decrypted as "Read The Following Manual", of course ;-)) first!
Good luck,
—SA