ABSTRACT
The deployment of multimedia protection algorithms to practical systems has moved to the standardization and implementation phase. This chapter proposes a generic attack for removing the watermark with minimum distortion if the detector is publicly available. It describes the pitfalls of the current detectors when the detector is publicly available and introduces the generic attack, which aims at removing the watermark with minimum distortion. The chapter examines possible implementations of the attack for the correlator and quantization-based detectors and looks at the new detector structure with a fractal decision boundary and provide a practical implementation of it. It provides an overview of the results that show that the distortion is essentially similar to the original detector. The chapter analyzes the structure of the decision boundary of common watermark detectors. The basic idea of the attack on quantization-based schemes is to estimate the entries of the different codebooks and use them to remove the watermark with minimum distortion.
