Rational dither modulation: a high-rate data-hiding method invariant to gain attacks

  title={Rational dither modulation: a high-rate data-hiding method invariant to gain attacks},
  author={Fernando P{\'e}rez-Gonz{\'a}lez and Carlos Mosquera and Mauro Barni and Andrea Abrardo},
  journal={IEEE Transactions on Signal Processing},
A novel quantization-based data-hiding method, called Rational Dither Modulation (RDM), is presented. This method retains most of the simplicity of the conventional dither modulation (DM) scheme, which is largely vulnerable to amplitude scalings and modifies it in such a way that the result becomes invariant to gain attacks. RDM is based on using a gain-invariant adaptive quantization step-size at both embedder and decoder. This causes the watermarked signal to be asymptotically stationary… CONTINUE READING
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Revisiting scalar quantization-based data hiding: Exact analysis and results

  • L. Pérez-Freire, F. Pérez-Gonzalez, S. Voloshynovskiy
  • IEEE Trans. Signal Processing, submitted for…
  • 2004
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