percentile
Arguments:
- [mask],0<=_min_percentile[%]<=100,0<=_max_percentile[%]<=100.
Description:
Apply percentile averaging filter to selected images.
Default values:
min_percentile=0 and max_percentile=100.
Example of use:
$ gmic
image.jpg shape_circle 11,11 +percentile[0] [1],25,75

Command:
image.jpg shape_circle 11,11 +percentile[0] [1],25,75

Command:
image.jpg shape_circle 11,11 +percentile[0] [1],25,75

Command:
image.jpg shape_circle 11,11 +percentile[0] [1],25,75