from matplotlib import pyplot as plt
from matplotlib import image as mpimg
import numpy as np
import itertools
from skimage import color


img = color.rgb2gray(mpimg.imread("/home/henrik/pictures/grayscale_bench.png"))
pyimg = img.tolist()

mergedlist = list(itertools.chain(*pyimg))


for x in mergedlist:
    if x < 0.51:
        mergedlist[x] = 0
    else:
        mergedlist[x] = 1


print(mergedlist)