Applying an FFT filter to an image

1. Click Grayscale»FFT Filter or click FFT Filter in the Grayscale tab of the Processing Functions palette.
2. Select the Truncate or Attenuate option.
3. Select the Mode. Low Pass removes or attenuates high frequencies, and High Pass removes or attenuates low frequencies.
4. If you selected Truncate, set the Truncation Frequency %. Otherwise, proceed to the next step.
5. Click OK to apply the FFT Filter, add this step to the script, and close the Parameter window.

Note  This function is computer-intensive and can take several seconds.

Tip  If you want to see the complex image created by the FFT Filter, select the Display FFT option. To see details of the FFT Filter, select the Gradient color palette from the Display Color Palette control in the toolbar.

Related Topics

FFT Filter (Grayscale»FFT Filter)