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A Novel Scrambling Digital Image Watermark Algorithm Based on Double Transform Domains

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  • Taiyue Wang
  • Hongwei Li

Abstract

Digital watermark technology is a very good method for protecting copyright. In this paper, in terms of requisition of imperceptibility and robustness of watermarking, the multidirectional, multiscale, and band-pass coefficient features of Curvelet transform are introduced and a novel image watermark scheme based on Curvelet and human visual system is proposed. Digital watermark information is embedded into the first 16 directions with larger energy in the fourth layer. Experimental results indicate that the proposed watermark scheme is feasible and simple. Simultaneously, the embedded watermark images just have tiny difference with the original images and the extracted watermark is accurate. Moreover, it is imperceptible and robust against various methods of signals processing such as cropping, noise adding, and rotating and altering.

Suggested Citation

  • Taiyue Wang & Hongwei Li, 2015. "A Novel Scrambling Digital Image Watermark Algorithm Based on Double Transform Domains," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-13, August.
    • Handle: RePEc:hin:jnlmpe:937432
    DOI: 10.1155/2015/937432
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