hello,

I have a question about image processing and Matlab :). How is it possible
to do radial/circular average of 2D FFT. I have an image, I did 2D FFT on
it, and now I would like to have amplitude over r (r = radius).

So, the 2D FFT of my image represents a "spot" now, so I would like to
take different values of radius r (to say 10-20, for example), for every
radius to calculate the mean value of the points to the distance r from
the center of 2D FFT, and finally, to obtain Amplitude over radius.  

I could not find any function in Matlab which can do radial average, to
obtain this kind of plot, so if you can hep me with a hint, I would be
happy :). Thank you.