Blur Image borders using Python Pillow

python-pillow-image-edge-blur.py

from PIL import Image, ImageFilter

# blur radius and diameter
radius, diameter = 20, 40

# open an image
img = Image.open("test_image.jpg")

# Paste image on white background
background_size = (img.size[0] + diameter, img.size[1] + diameter)
background = Image.new('RGB', background_size, (255, 255, 255))
background.paste(img, (radius, radius))

# create new images with white and black
mask_size = (img.size[0] + diameter, img.size[1] + diameter)
mask = Image.new('L', mask_size, 255)

black_size = (img.size[0] - diameter, img.size[1] - diameter)
black = Image.new('L', black_size, 0)

# create blur mask
mask.paste(black, (diameter, diameter))

# Blur image and paste blurred edge according to mask
blur = background.filter(ImageFilter.GaussianBlur(radius / 2))
background.paste(blur, mask=mask)
background.save("test_image_blurred.jpg", quality=100))

# show blurred edged image in preview
background.show()

Thanks for sharing

Thanks for sharing

You're welcome.