Non code fag here, apologize in advance if this is retarded. With the CBS logo. It should be pretty simple black and white. Can you overlay a "good" one and compare to the messaged one? Wouldn't there be differences in pixels from the "original" picture to the messaged picture? Can you test it by making a picture, putting in a simple message and comparing both.
yup kinda retarded. Did find this though.
http://www.ws.binghamton.edu/fridrich/research/f5.pdf
Been thinking about the pixel knot thing for a while. Non
code monkey/crypto fag.I am not sure you would need a
password to decrypt. I don't know alot of the language so it
may be rough in translation, I am more of a visual type.
Experiment: take a picture and run it through pixelknot.
Create new picture with the changes between the original and
the new pixelknot photo. This will create a template of the
changes to work with on the experiment. This may not be
necessary in the future, but it is a starting point. Run it
through an algorythm/formula and create a new pic. Do this
with 10K-100K algorythms.
It is my hypothesis that the static overlay will behave
slightly different than the hardcoded message. Maybe less
than 1/10th%. Create a program that looks for anomalies. A
couple of pixels in a straight line or curve. Overlay the
pics, all 10-100K and look for letters based on anomalies
that form possible letters in a stacked formation in the top
50% (or whatever).
I would liken it to creating waves in the picture and much
like looking for subs as the Chinese satelites are purported
to do with wave photographs. Or, like tuning into UHF, there
is alot of static, but you can see the words or image even
though it is not crystal clear. After doing this a few
hundred times, you may be able to analyze which algorythms
are more successful.
I don't know how much computing power that would take or if
anyone has that much. If this is viable, there is no need
to send anyone to knock on my door, I am just working on a
puzzle.