A novel approach to decoding: Exploiting anticipated
attack information using genetic programming
International Journal of Knowledge-Based and
Intelligent Engineering Systems, 10 (5):
337--346 (2006)Abstract
In a water marking system, the decoder structures are
mostly fixed. They do not account for the normal
processing or intentional attacks. In the present work,
a method of automatically modifying the decoder
structure in accordance to the given cover image and
conceivable attack is illustrated. The proposed Genetic
Programming based watermark decoding scheme is a blind
one. It exploits the search space regarding types of
dependencies of the decoder on different factors.
Especially, information pertaining to watermarked cover
coefficients is utilized to reduce host interference,
while the conceivable-attack information is utilized to
circumvent the anticipated distortion. The actual
performance of the genetic decoder is assessed through
experiments, which justify the use of intelligent
search techniques in signal detection/decoding.
Simulation results show that the resultant genetic
decoder has superior performance as compared to the
conventional decoder against the attacks of Checkmark
benchmark.
