python-pillowHow to add noise

Pillow doesn't have integrated noise methods, but noise can be easily simulated using putpixel() to set random color for random pixels of an image:

from PIL import Image
import random

im = Image.open('/var/www/examples/heroine.png')
for i in range( round(im.size[0]*im.size[1]/5) ):
  im.putpixel(
    (random.randint(0, im.size[0]-1), random.randint(0, im.size[1]-1)),
    (random.randint(0,255),random.randint(0,255),random.randint(0,255))
  )

im.show()ctrl + cgithub

`PIL` import Pillow package modules	`Image.open` open given image with Pillow
`round(im.size[0]*im.size[1]/5` each 5th pixel will be noised out (change `5` to larger values to decrease noise density)	`.putpixel(` sets color of a given pixel
`.show()` displays resulting image

Usage example

from PIL import Image, ImageFilter
import random

im = Image.open('/var/www/examples/heroine.png')
for i in range( round(im.size[0]*im.size[1]/5) ):
  im.putpixel(
    (random.randint(0, im.size[0]-1), random.randint(0, im.size[1]-1)),
    (random.randint(0,255),random.randint(0,255),random.randint(0,255))
  )

im.show()

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python-pillowHow to add noise

Usage example

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