| 一种基于秘密共享方案的数字图像水印算法 |
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| 引用本文： | 沈晓峰,马小虎.一种基于秘密共享方案的数字图像水印算法[J].计算机应用与软件,2009,26(1). |
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| 作者姓名： | 沈晓峰 马小虎 |
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| 作者单位： | 苏州大学计算机科学与技术学院,江苏,苏州,215006 |
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| 摘 要： | 提出了一种新的基于秘密共享方案的数字图像水印算法,其主要特点是将原始水印分成两份,一份嵌入载体图像增加系统安全性.通过载体图像生成一个辅助矩阵(极性矩阵),第二份和极性矩阵用来产生一个主密钥和若干个普通密钥.在此系统中,只有拥有主密钥的用户才能直接恢复出真正的水印,其他拥有普通密钥的用户只能恢复阴影水印,将那些阴影水印联合起来,才能恢复出真正的水印,所以算法具有一定的实用价值.实验结果证明:所提出的水印算法对JPEG压缩、椒盐噪声、剪切等图像处理攻击具有很好的鲁棒性.
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| 关 键 词： | 数字图像 数字水印 视觉密码 版权保护 |
DIGITAL IMAGE WATERMARKING SCHEME BASED ON SECRET SHARING |
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| Shen Xiaofeng,Ma Xiaohu.DIGITAL IMAGE WATERMARKING SCHEME BASED ON SECRET SHARING[J].Computer Applications and Software,2009,26(1). |
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| Authors: | Shen Xiaofeng Ma Xiaohu |
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| Affiliation: | School of Computer Science and Technology;Soochow University;Suzhou 215006;Jiangsu;China |
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| Abstract: | A new watermarking scheme with the ability of secret sharing is proposed.It splits the original watermark into two shares.One share is embedded into the cover image to increase the security of the system,and an assistant matrix that is a polarity matrix is established from the cover image.Another share and the polarity matrix are used to generate a master key and several normal keys.In this system,only the users who own the master key can retrieve the genuine watermark directly.Other users possess the norma... |
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