Re: How to Get 1D Power Spectra from 2D FFT Image

Hi Dean,

X-axis in wave vector units is of interest to me too, since I
use Radial profile almost exclusively on power spectra
calculated from HRTEM images. Please let me know how to do that.

Thanks,
Divakar


--- Dean Waldow <waldow1@xxxxxxxxxxxx> wrote:

> Hi,
> 
> You can try the radial profile plugin as Divakar suggests. I
> also  
> ended up rewriting the radial profile plugin so the x-axis is
> wave  
> vector to compare with scattering data. If that is of
> interest, let  
> me know.
> 
> Dean Waldow
> 
> 
> On Mar 27, 2006, at 7:07 PM, Ben wrote:
> 
> > Dear All,
> >   Sorry for bothering.
> >   I had a 2D TEM image and I already used ImageJ to get a 2D
> power  
> > spectra. (FFT transform on the TEM image).
> >    The problem is: I wan to average the radial intensity  
> > distribution of all the direction on the 2D power spectra to
> get a  
> > 1D power spectra. That is to say, how to extract a 1D
> magnitude of  
> > the 2D transform. So, I am wondering is there such a plugin
> to  
> > average over the azimuthal angel to yield the radial power
> spectra?
> >    Thanks a lot and your respons will be well appreciated!
> >   Regards
> >   Ben
> >
> >             
> > ---------------------------------
> > Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone
> calls.   
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> 



---------------------------------
 Divakar@Yahoo 
---------------------------------



                
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