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Applying rank filter to an image using the Pillow library
In this program, we will blur an image using a rank filter. The ImageFilter class in the pillow library contains a function called RankFilter() which helps to apply the rank filter. It takes two parameters, size of the kernel and rank. Rank is 0 for a min filter, size*size/2 for a median filter and size*size-1 for a max filter.
Original Image
Algorithm
Step 1: Import Image and ImageFilter from Pillow. Step 2: Open the image. Step 3: Call the rankfilter() method and specify the size and rank. Step 4: Display the output.
Example Code
from PIL import Image, ImageFilter im = Image.open('image_test.jpg') im1 = im.filter(ImageFilter.RankFilter(7, 0)) im1.show()
Output
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