Loading...

Robustness enhancement of content-based watermarks using entropy masking effect

Sadr, A. H ; Sharif University of Technology | 2005

207 Viewed
  1. Type of Document: Article
  2. DOI: 10.1007/11551492_34
  3. Publisher: 2005
  4. Abstract:
  5. 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. © Springer-Verlag Berlin Heidelberg 2005
  6. Keywords:
  7. Adaptive systems ; Imaging systems ; Opacity ; Robustness (control systems) ; Speech intelligibility ; Contrast masking ; Entropy masking ; Host image ; Watermark power enhancement ; Digital watermarking
  8. Source: 4th International Workshop on Digital Watermarking, IWDW 2005, Siena, 15 September 2005 through 17 September 2005 ; Volume 3710 LNCS , 2005 , Pages 444-458 ; 03029743 (ISSN); 354028768X (ISBN); 9783540287681 (ISBN)
  9. URL: https://link.springer.com/chapter/10.1007/11551492_34