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andreasjansson/simple_noise.py

Created March 1, 2013 16:38
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simple_noise.py
def add_grain(im, depth=14):
pix = im.load()
width, height = im.size
pix = im.load()
for y in xrange(height):
for x in xrange(width):
pix[x, y] = tuple(map(lambda x: x + random.randint(-depth, depth),
list(pix[x, y])))
return im
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