Python PIL | UnsahrpMask() method

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

PIL.ImageFilter.UnsharpMask() method applies the Unsahrp mask filter to the input image.

Syntax: PIl.ImageFilter.UnsharpMask(radius=2, percent=150, threshold=3)

Parameters:
radius: Blur Radius
percent: Unsharp strength, in percent
threshold: Threshold controls the minimum brightness change that will be sharpened

See this digital unsharp masking for the explanation of the parameters

Image used:

# Importing Image and ImageFilter module from PIL package   
from PIL import Image, ImageFilter  
       
# creating a image object  
im1 = Image.open(r"C:\Users\sadow984\Desktop\download2.JPG")  
       
# applying the unsharpmask method  
im2 = im1.filter(ImageFilter.UnsharpMask(radius = 3, percent = 200, threshold = 5))  
       
im2.show() 

Output:

# Importing Image and ImageFilter module from PIL package   
from PIL import Image, ImageFilter  
       
# creating a image object  
im1 = Image.open(r"C:\Users\sadow984\Desktop\download2.JPG")  
       
# applying the unsharpmask method  
im2 = im1.filter(ImageFilter.UnsharpMask(radius = 4, percent = 500, threshold = 8))  
       
im2.show() 

Output:

# Importing Image and ImageFilter module from PIL package   
from PIL import Image, ImageFilter  
       
# creating a image object  
im1 = Image.open(r"C:\Users\sadow984\Desktop\download2.JPG")  
       
# applying the unsharpmask method  
im2 = im1.filter(ImageFilter.UnsharpMask(radius = 5, percent = 500, threshold = 10))  
       
im2.show() 

Output:

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