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Robust watermarking against print and scan attack through efficient modeling algorithm

Amiri, S. H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.image.2014.07.004
  3. Abstract:
  4. This article proposes a blind discrete wavelet transform-discrete cosine transform (DWT-DCT) composite watermarking scheme that is robust against print and scan distortions. First, two-dimensional DWT is applied to the original image to obtain the mid-frequency subbands. Then, a one-dimensional DCT is applied to the selected mid-frequency subbands to extract the final coefficients for embedding the watermark. To specify watermarking parameters, we utilize a Genetic Algorithm to achieve a predefined image quality after watermark insertion. Suitable locations for watermarking are determined by analyzing the effect of a modeling algorithm. This model simulates noise and nonlinear attacks in printers and scanners through noise estimation and system identification methods. The experimental results demonstrate that the proposed algorithm has a high robustness against print and scan attack such that its robustness is higher than related watermarking algorithms
  5. Keywords:
  6. Image Quality ; Modeling ; Robustness ; Algorithms ; Digital watermarking ; Discrete cosine transforms ; Discrete wavelet transforms ; Genetic algorithms ; Models ; Robustness (control systems) ; Wavelet transforms ; Model algorithms ; Noise estimation ; Print-and-scan attacks ; Robust watermarking ; System identification methods ; Watermark insertion ; Watermarking algorithms ; Watermarking schemes ; Image watermarking
  7. Source: Signal Processing: Image Communication ; Vol. 29, issue. 10 , November , 2014 , p. 1181-1196 ; ISSN: 09235965
  8. URL: http://www.sciencedirect.com/science/article/pii/S0923596514001106