| 一种基于混沌加密的DCT域数字图像水印算法 |
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| 引用本文： | 郑融,金聪,魏文芬,李蓓.一种基于混沌加密的DCT域数字图像水印算法[J].计算机应用,2005,25(10):2365-2366. |
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| 作者姓名： | 郑融 金聪 魏文芬 李蓓 |
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| 作者单位： | 1. 华中师范大学,计算机科学系,湖北,武汉,430079
2. 华中师范大学,计算机科学系,湖北,武汉,430079;中国科学院院,信息安全国家重点实验室,北京,100039 |
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| 基金项目： | 国家自然科学基金资助项目（10477007）;湖北省教育厅重点基金资助项目（2003A012）;中科院信息安全国家重点实验室开放基金资助项目（03-02） |
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| 摘 要： | 提出了一种基于混沌加密的DCT域数字图像水印算法。该算法利用Logistic映射生成一个随机序列，利用该随机序列对经过置乱处理的二值图像进行调制，最后将其嵌入到原始图像的低频系数中。仿真实验结果表明，实现的水印具有不可见性，而且对于常见的噪声、裁剪、JPEG压缩具有较好的健壮性。
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| 关 键 词： | 离散余弦变换 混沌序列 图像置乱 数字水印 |
| 文章编号： | 1001-9081（2005）10-2365-02 |
| 收稿时间： | 2005-03-31 |
| 修稿时间： | 2005-03-312005-06-02 |
Digital image watermark algorithm in DCT domain with chaotic encryption |
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| Zheng Rong,JIN Cong,WEI Wen-fen,Li Bei.Digital image watermark algorithm in DCT domain with chaotic encryption[J].journal of Computer Applications,2005,25(10):2365-2366. |
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| Authors: | Zheng Rong JIN Cong WEI Wen-fen Li Bei |
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| Affiliation: | 1. Department of Computer Science, Central China Normal University, Wuhan Hubei 430079, China; 2. State Key Laboratory of Information Security, Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | A digital image watermark algorithm in DCT(Discrete Cosine Transform) domain with chaotic encryption was presented.A two-value image that had been dealt with by shuffle was modulated by a random watermark sequence created by using Logistic map,and then it was embedded to the low frequency coefficients of original image.Experimental results demonstrate that the watermark is invisible and robust against common noise,crop and JPEG compress etc. |
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| Keywords: | DCT(Discrete Cosine Transform) chaotic sequence image shuffle digital watermark |
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