go("#137") -- split

_, _, s = string.find(result, ": (.+)")
parts = split(s, ", ")

-- copy image

w, h = img.width, img.height
pixels = {}
for y = 0, h-1 do
  for x = 0, w-1 do
    pixels[y*w+x+1] = img.getInt(x, y)
  end
end

-- invert the segments

for _, segment in ipairs(parts) do
  x1, x2 = unpack(split(segment, "-"))
  for x = x1, x2-1 do
    for y = 0, h-1 do
      pixels[y*w+x+1] = 0xFFFFFF - pixels[y*w+x+1]
    end
  end
end