1 import sys
  2 from collections import defaultdict
  3 from PIL import Image
  4
  5 img = sys.argv[1]
  6 im = Image.open(img)
  7 p = im.load()
  8
  9
 10 cr, cg, cb = defaultdict(int), defaultdict(int), defaultdict(int)
 11
 12 cnt = defaultdict(int)
 13 for x in range(512):
 14     for y in range(512):
 15         r, g, b = p[x, y]
 16
 17         cr[r] += 1
 18         cg[g] += 1
 19         cb[b] += 1
 20
 21         if r == 113 or g == 167 or b == 243:
 22             p[x, y] = (255, 0, 0)
 23
 24 for name, color in [('Red', cr), ('Green', cg), ('Blue', cb)]:
 25     print()
 26     print(name)
 27
 28     for i in range(256):
 29         print(1 if i in color else 0, end='')
 30     print()
 31
 32 im.show()