gistfile1.py

#!/usr/bin/env python
from PIL import Image
import binascii
import numpy as np

# Read image and convert pixels to array
im = Image.open('/home/someone/Downloads/picture.png')
matrix = np.array(im)

# Convert array to binary string (excluding red borders)
message = '0b'
for row in matrix:
    for item in row:
        if item in (0, 1):
            message += str(item)

# Convert binary string to ascii
message = binascii.unhexlify('%x' % int(message, 2))

# And print result...
print message