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

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      Mathematical Problems in Engineering
      Hindawi Limited

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          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.

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          Most cited references8

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          Fast Discrete Curvelet Transforms

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            New tight frames of curvelets and optimal representations of objects with piecewiseC2singularities

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              Techniques for data hiding

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                Author and article information

                Journal
                Mathematical Problems in Engineering
                Mathematical Problems in Engineering
                Hindawi Limited
                1024-123X
                1563-5147
                2015
                2015
                : 2015
                :
                : 1-13
                Article
                10.1155/2015/937432
                dedb3b82-4515-40e6-af93-1ab19454bffe
                © 2015

                http://creativecommons.org/licenses/by/3.0/

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