Adobe FFT/IFFT plugin

15 Jan 2004 

Setup instructions:

1. Extract files from archive into any folder 
2. Copy files FFT.8bf from FFT folder and IFFT.8bf from IFFT folder
into your "Plugins" folder such as C:\...\Paint Shop Pro 7\Plugins
3. Start you Adobe Photoshop or Jacs PaintShop as usually. Installed
plugins FFT and iFFT should appear in your plugins list.


How to use instructions:

1. Open any image of create new one for processing.
2. Make sure your image have 16.7e6 colors (24bit image), 
increase color depth before processing if necessary.
3. Select FFT, from menu. (it works as usual filter)
4. Complex phase information is stored in HUE channel 
while complex amplitude is stored in lightness channel.
5. Split channel to HSL (or HSV) in order to access different channels separately.
6. You can make changes in any channel (HUE-Phase, Lightness-Amplitude).
7. When you are done with editing, combine channels together in one image.
8. Select iFFT from menu. 

Alex Chirokov
chirokov@drexel.edu