Python PIL’s MedianFilter() and ModeFilter() Methods

PIL is the Python Imaging Library, which provides image editing capabilities for the Python interpreter. The ImageFilter module contains definitions for a set of predefined filters.
These can be used in conjunction with the Image.filter() method.

PIL.ImageFilter.MedianFilter() creates a median filter. It selects the median pixel value within a window of a given size.

Syntax: PIL.ImageFilter.MedianFilter(size=3)

Parameters:
size: The kernel size, in pixels.

Images used:

# Importing Image and ImageFilter module from PIL package
from PIL import Image, ImageFilter
     
#creating an image object
im1 = Image.open(r"C:Userssadow984Desktopdownload2.JPG")
     
# applying the median filter
im2 = im1.filter(ImageFilter.MedianFilter(size = 3)) 
     
im2.show() 

Output:

The PIL.ImageFilter.ModeFilter() method creates a mode filter. It selects the most frequent pixel value within a box of a 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 retained.

# Importing Image and ImageFilter module from PIL package
from PIL import Image, ImageFilter
     
#creating an image object
im1 = Image.open(r"C:Userssadow984Desktopdownload2.JPG")
     
# applying the mode filter
im2 = im1.filter(ImageFilter.ModeFilter(size = 3))
     
im2.show()