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A comparative study of chaotic and white noise signals in digital watermarking

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  • Mooney, Aidan
  • Keating, John G.
  • Pitas, Ioannis

Abstract

Digital watermarking is an ever increasing and important discipline, especially in the modern electronically-driven world. Watermarking aims to embed a piece of information into digital documents which their owner can use to prove that the document is theirs, at a later stage. In this paper, performance analysis of watermarking schemes is performed on white noise sequences and chaotic sequences for the purpose of watermark generation. Pseudorandom sequences are compared with chaotic sequences generated from the chaotic skew tent map. In particular, analysis is performed on highpass signals generated from both these watermark generation schemes, along with analysis on lowpass watermarks and white noise watermarks. This analysis focuses on the watermarked images after they have been subjected to common image distortion attacks. It is shown that signals generated from highpass chaotic signals have superior performance than highpass noise signals, in the presence of such attacks. It is also shown that watermarks generated from lowpass chaotic signals have superior performance over the other signal types analysed.

Suggested Citation

  • Mooney, Aidan & Keating, John G. & Pitas, Ioannis, 2008. "A comparative study of chaotic and white noise signals in digital watermarking," Chaos, Solitons & Fractals, Elsevier, vol. 35(5), pages 913-921.
    • Handle: RePEc:eee:chsofr:v:35:y:2008:i:5:p:913-921
    DOI: 10.1016/j.chaos.2006.05.073
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    Cited by:

    1. Sidiropoulos, Panagiotis & Nikolaidis, Nikos & Pitas, Ioannis, 2009. "Invertible chaotic fragile watermarking for robust image authentication," Chaos, Solitons & Fractals, Elsevier, vol. 42(5), pages 2667-2674.
    2. Vázquez-Medina, R. & Díaz-Méndez, A. & del Río-Correa, J.L. & López-Hernández, J., 2009. "Design of chaotic analog noise generators with logistic map and MOS QT circuits," Chaos, Solitons & Fractals, Elsevier, vol. 40(4), pages 1779-1793.
    3. Mooney, Aidan & Keating, John G. & Heffernan, Daniel M., 2009. "Performance analysis of chaotic and white watermarks in the presence of common watermark attacks," Chaos, Solitons & Fractals, Elsevier, vol. 42(1), pages 560-570.

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