14. ImageFilter ModeFilter

See: https://pillow.readthedocs.io/en/stable/reference/ImageFilter.html#PIL.ImageFilter.ModeFilter

14.1. ModeFilter

Use the Image.filter(ImageFilter.ModeFilter(radius=3)) method to use the mode of the pixel value in a pixel area given by the radius.
Picks the most frequent pixel value in a box with the given size. Pixel values that occur only once or twice are ignored; if no pixel value occurs more than twice, the original pixel value is preserved.
from PIL import Image, ImageFilter


with Image.open("test_images/river_valley.jpg") as im:
    new_im = im.filter(ImageFilter.ModeFilter(size=3))
    new_im.save("filters/ModeFilter.png")
Unfiltered, MinFilter, MedianFilter, ModeFilter and MaxFilter are compared below:
../_images/compare_Filters.png