Python PIL | UnsharpMask() 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:
Python3
# Importing Image and ImageFilter module from PIL package from PIL import Image, ImageFilter # creating a image objectim1 = Image.open(r"C:\Users\sadow984\Desktop\download2.JPG") # applying the unsharpmask methodim2 = im1.filter(ImageFilter.UnsharpMask(radius = 3, percent = 200, threshold = 5)) im2.show() |
Output:
Python3
# Importing Image and ImageFilter module from PIL package from PIL import Image, ImageFilter # creating a image objectim1 = Image.open(r"C:\Users\sadow984\Desktop\download2.JPG") # applying the unsharpmask methodim2 = im1.filter(ImageFilter.UnsharpMask(radius = 4, percent = 500, threshold = 8)) im2.show() |
Output:
Python3
# Importing Image and ImageFilter module from PIL package from PIL import Image, ImageFilter # creating a image objectim1 = Image.open(r"C:\Users\sadow984\Desktop\download2.JPG") # applying the unsharpmask methodim2 = im1.filter(ImageFilter.UnsharpMask(radius = 5, percent = 500, threshold = 10)) im2.show() |
Output:
