I have an HRTEM image and I have seen literature that uses IFFT to unambiguously identify crystal structures. How do I transform HRTEM to IFFT?
https://www.researchgate.net/post/How_could_the_fast_Fourier_method_be_used_to_calculate_d-spacing_values_from_a_TEM_nanoparticle_graphs#view=5807d70493553b1517613185
Keroles, if you use ImageJ, you should be able to easily do a FFT your image. ImageJ is a free download. Make sure you draw a line over your scale bar, then set the scale using Analyze>Set Scale; this will allow you to get accurate d-spacing measurements. Then, you should find the appropriate option under Process>FFT. Once you have the FFT image, you can just hover the cursor over the line/spot of interest and it will show you the d-spacing value. Let me know if you have any other questions.
that is what I did. but some papers have some "fancy" Inverse fast fourier images (IFFT not FFT) and I was wondering how to get those. When I do inverse in imageJ I just get my HRTEM back..
perhaps. I mean FFT, IFFT and even just the image say the same thing that I already know. but I am trying to figure out what is the best way to illusterate it.
I see. My only other suggestion is to do the FFT then edit the colors in ImageJ or in another program (Adobe Illustrator/Photoshop, Microsoft Office).
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