This is pretty obscure and took me a while to get working right. If you’re looking for a Fast Fourier Transform plugin for 64 bit Photoshop, it can be pretty hard to find. Thankfully someone named Phil Thornton modified a plugin that was originally made for 32bit Photoshop by Alex Chirikov to run on 64bit versions.
(what can the FFT plugin do for you? See this )
This was tested on a machine running Photoshop CC 2015 under Windows 8.1. I originally copied everything into the plugins folder and kept running into a disk error for some reason but managed to get it to work by moving the .dll file to the Photoshop root folder. The exact steps taken were.
1.Copy the .8bf-files from “\bin\x64” to “C:\Program Files\Adobe\Adobe Photoshop CC 2015\Plug-ins”
2.Copy libfftwx64_3-3.dll from “\bin\x64” to “C:\Program Files\Adobe\Adobe Photoshop CC 2015\”
I already had the Microsoft C and C++ development libraries installed on my system so I didn’t need the other .dll’s but I’d have to assume that the files go in the same place.
Hope that helps someone out there!