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    题名: An Ownership Protection Scheme Based on Visual Cryptography and the Law of Large Numbers
    作者: Hou, Young-chang;Huang, Pei-hsiu
    贡献者: 淡江大學資訊管理學系
    关键词: Visual cryptography;law of large numbers;intellectual property rights protection;unexpanded share
    日期: 2012-06
    上传时间: 2012-06-01 09:04:08 (UTC+8)
    出版者: Kumamoto: I C I C International
    摘要: Digital watermarking is a technique for the protection of intellectual property rights. In this study a novel ownership protection scheme based on visual cryptography and the law of large numbers is proposed, where 2 phases, namely an ownership construction phase and an ownership authentication phase, each with 3 steps, are designated to illustrate how it works. In our scheme, two pixels at a time are selected randomly from the host image, then compared with the other and the results determine the corresponding content of the shares. The law of large numbers is employed to ensure the random distribution of half-black-and-half-white shares, which satisfies the demand needed for security in visual cryptography. The proposed method enjoys several advantages over conventional methods such as it does not to alter the host image, it can identify the ownership without the help of the original host image, and it allows multiple watermarks or larger watermarks to be registered in a smaller host image. Finally, experimental results are given to illustrate the robustness of our scheme against several common attacks.
    關聯: International Journal of Innovative Computing, Information and Control 8(6), pp.4147-4156
    显示于类别:[資訊管理學系暨研究所] 期刊論文


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