Highpass
Emphasizes areas of detail in an image and stylizes the colors in the resulting image to create a mind-blowing psychedelic display.
Adjust this filter using the parameter controls in the Filters Inspector:
Radius: Sets the amount of variance of detail to consider. Values range from 0 (entire range of color) to 100 (only the most detailed portions).
Amount: Sets the amount of emphasis.
Mix: Sets the percentage of the original image to be blended with the filtered image.