| 元胞自动机变换可恢复图像认证算法 |
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| 引用本文： | 金军,舒红平.元胞自动机变换可恢复图像认证算法[J].电子科技大学学报(社会科学版),2009(6). |
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| 作者姓名： | 金军 舒红平 |
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| 作者单位： | 四川大学计算机学院;成都信息工程学院计算机系; |
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| 基金项目： | 四川省青年科技基金(06ZQ026-054) |
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| 摘 要： | 提出一种基于元胞自动机变换的可恢复图像认证算法,将图像分割成不重叠子块,对每个子块进行两层二维元胞自动机变换CAT,从第二层低频系数生成子块认证水印和恢复水印,分别嵌入当前子块和对应子块的第一层低频系数,形成含水印图像;用认证水印进行图像认证;用恢复水印恢复被篡改图像子块。实验表明,该算法安全性高,且具有很强的抗VQ攻击能力。
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| 关 键 词： | 元胞自动机变换 图像认证 图像恢复 安全 篡改定位 |
Restorable Image Authentication with Cellular Automata Transform |
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| JIN Jun , SHU Hong-ping.Restorable Image Authentication with Cellular Automata Transform[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2009(6). |
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| Authors: | JIN Jun SHU Hong-ping |
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| Institution: | JIN Jun1 , SHU Hong-ping2(1.College of Computer Science,Sichuan University Chengdu 610065,2.Department of Computers,Chengdu University of Information Technology Chengdu 610041) |
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| Abstract: | A restorable image authentication with cellular automata transform is proposed.The original image is splited into non-overlppin blocks and two layer cellular automata transform(CAT) is performed on each block.Authentication watermark and restoration watermark are produced from the second-layer low frequency coefficients and embedded into the first-layer low frequency coefficients of the current block and the corresponding block separately.Image authentication is played with the authentication watermark,and ... |
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| Keywords: | cellular automata transform image authentication image restoration security tamper location |
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