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2005
Springer

Robustness Enhancement of Content-Based Watermarks Using Entropy Masking Effect

10 years 8 months ago
Robustness Enhancement of Content-Based Watermarks Using Entropy Masking Effect
Image-Adaptive watermarking systems exploit visual models to adapt the watermark to local properties of the host image. This leads to a watermark power enhancement, hence an improved resilience against different attacks, while keeping the mark imperceptible. Visual models consider different properties of the human visual system, such as frequency sensitivity, luminance sensitivity and contrast masking. Entropy masking is another human visual system’s characteristic, which rarely has been addressed in visual models. In this paper we have utilized this masking effect to improve the robustness of Image-Adaptive watermarks while keeping their transparency. Experimental results show a significant amount of enhancement to the power of watermark. The work has been expanded to video watermarking, considering special properties of the entropy masking effect.
Amir Houman Sadr, Shahrokh Ghaemmaghami
Added 28 Jun 2010
Updated 28 Jun 2010
Type Conference
Year 2005
Where IWDW
Authors Amir Houman Sadr, Shahrokh Ghaemmaghami
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