Moire Pattern RemovalThe free Fourier Transform plug-in (only for Windows) has been designed to make filtering in the frequency domain available for free.

It uses one of the fastest implementations of the Discrete Fourier Transform and has many applications, such as:

- Separating or removing periodical patterns.
- Analyzing and enhancing certain periodical patterns.

Remove Moire from Color Image
The plug-in is developed mainly for B&W images but also works well with some color images after using this little Lunacore trick:

- open image that needs to be fixed
- duplicate image (image/duplicate)
- apply FT filter to the original image
- drag/drop the duplicate with the mouse (while holding down the shift key) to the current document
- use filter/noise/median to blur this color image until pattern disappears
- set blending mode of this layer to color