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Maximum Correlation Search Based Watermarking Scheme Resilient to RST

  • Sergio Bravo
  • Felix Calderón
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3773)

Abstract

Many of the watermarking schemes that claim resilience to geometrical distortions embed information into invariant or semi-invariant domains. However, the discretisation process required in such domains might lead to low correlation responses during watermarking detection. In this document, a new strategy is proposed to provide resilience to strong Rotation, Scaling and Translation (RST) distortions. The proposed detection process is based on a Genetic Algorithm (GA) that maximises the correlation coefficient between the originally embedded watermark and the input image. Comparisons between a previous scheme, based on Log-Polar Mapping (LPM), and the present approach are reported. Results show that even a simple insertion process provides more robustness, as well as a lower image degradation.

Keywords

Watermark Scheme Geometrical Distortion Digital Watermark Quantisation Index Modulation Template Attack 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Sergio Bravo
    • 1
  • Felix Calderón
    • 1
  1. 1.División de Estudios de Posgrado de Ingeniería EléctricaUniversidad Michoacana de San Nicolás de HidalgoMoreliaMéxico

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