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Python PIL | UnsahrpMask() method
  • Last Updated : 29 Jun, 2019
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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