Laboratory in the woods
It's a bit strange inscription in the laboratory, isn't it?
A picture with some noise is given.
After search by image I've found original image with the same size (1280x800).
Then I tried to make a difference between these two images.
from PIL import Image def diff_images(): file_stego_image = Image.open('picture.jpg') file_original_image = Image.open('orig.jpg') width, height = file_stego_image.size steg_pixels = file_stego_image.load() orig_pixels = file_original_image.load() diff_image = Image.new('RGB', (width, height)) diff_pixels = diff_image.load() for y in xrange(height): for x in xrange(width): steg_color = steg_pixels[x, y] orig_color = orig_pixels[x, y] diff_color = (abs(steg_color - orig_color), abs(steg_color - orig_color), abs(steg_color - orig_color)) diff_pixels[x, y] = diff_color diff_image.save('diff.jpg')
And the result is an image with flag: AnSw3|2