17. ImageFilter MaxFilter

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

17.1. MaxFilter

Use the Image.filter(ImageFilter.MaxFilter(radius=3)) method to use the max pixel value in a pixel area given by the radius.
from PIL import Image, ImageFilter


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