JOI style random picture

joi-random.py

# pdftoppm joi-style.pdf outputname -png -r 300 -scale-to 1024

import random
from PIL import Image

img = Image.open('joi-style-1.png')
w, h = img.size
print(img.size)
grid = 16
lw = w // grid
lh = h // grid
arr = [x for x in range(grid**2)]

random.shuffle(arr)

out = Image.new('RGB', size=(w, h))

for row in range(grid):
    for col in range(grid):
        temp = arr[row*grid+col]
        r, c = temp // grid, temp % grid
        # out[row*lh:row*(lh+1), col*lw:col*(lw+1)] = \
        part = img.crop((c*lw, r*lh, (c+1)*lw, (r+1)*lh))
        out.paste(part, (col*lw, row*lh))


out.save('out.png')