Several years ago, A. Chirokov wrote a couple of FFT plugins for Photoshop and I've collected the relevant and most recent files from various user forums and decided to provide them in zipped files.
The main advantage of using FFT is that it retains the original sharpness of the image, unlike various de-screening filters which rely on blurring to remove the pattern.
The main disadvantages of FFT are:
- It does not remove the pattern all the way out to the image edges. You can mitigate this behavior by first using Layout...Document...Change Layer Size to add additional pixels around the image. I use formulas of w*1.5 and h*1.5 with a medium gray background to do this.
- Often, it does not remove all the pattern, particularly in the brightest areas of the image. You can use PL's de-screen or blur filter followed by a sharpen filter to correct that. The result will usually be sharper than simply using a blurring filter (without FFT) to de-screen.
http://en.file-upload.net/download-8785 ... -.zip.html
http://en.file-upload.net/download-8785 ... -.zip.html
Installation (32-bit)
Copy all four files into your 32-bit plugins directory.
Installation (64-bit)
- Copy the two *.8bf files into your 64-bit plugins directory.
- Copy the DLL file into your PhotoLine directory (the same directory as the PL executable).
http://dl.dropboxusercontent.com/u/6795 ... n/main.htm
has some sample demonstrations, explains the use of the plugin, and provides an explanation of the theory behind the FFT plugin. N.B.: The 32-bit version of the plugin uses the Green channel as the operative channel.
In subsequent posts, I'll show a sample and provide a mini-tutorial about using the plugins with tips I've learned through experience.
Enjoy!