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| DCT域水印嵌入新策略和算法 | |
| 引用本文： | 余燕忠,王新伟,刘建华.DCT域水印嵌入新策略和算法[J].计算机应用与软件,2004,21(1):12-13,60. |
| 作者姓名： | 余燕忠 王新伟 刘建华 |
| 作者单位： | 1. 泉州师范学院物理系,泉州,362000 2. 华东师范大学计算机科学系,上海,200062 3. 桂林航天工业高等专科学校计算机系,桂林,541004 |
| 基金项目： | 国家 973项目资助 (编号 :G1 9980 30 4 1 92 - 2 ) |
| 摘 要： | 本文提出一种新的水印嵌入策略，将水印信号嵌入到原始图像块DCT域的AC分量和DC分量中。基于该策略提出了一个自适应图像水印算法。该算法先把原始图像和水印图像分别进行分块DCT，然后将水印信号的AC分量和DC分量以不同的能量分别嵌入到原始图像块DCT域的AC分量和DC分量中。实验结果表明，该算法具有良好的鲁棒性。 |
| 关 键 词： | DCT域 水印嵌入策略 自适应图像水印算法 图像处理 鲁棒性 图像信息安全 |
A NEW ALGORITHM FOR WATERMARKING IN DCT |
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| Yu Yanzhong,Wang Xinwei,Liu Jianhua.A NEW ALGORITHM FOR WATERMARKING IN DCT[J].Computer Applications and Software,2004,21(1):12-13,60. | |
| Authors: | Yu Yanzhong Wang Xinwei Liu Jianhua |
| Affiliation: | Yu Yanzhong 1 Wang Xinwei 2 Liu Jianhua 3 1 |
| Abstract: | In this paper,a new strategy by which embeds watermarks are embedded into AC components and DC components of original image blocks in DCT is proposed.An algorithm for adaptive image watermarking based on this strategy is also proposed.First,the proposed algorithm splits the original image and watermark image into some blocks and transformed them by DCT respectively.Then, AC components and DC components of watermark with different strength are embedded into AC components and DC components of original image blocks in DCT .Experimental results show that the proposed algorithm is possessed of good robustness. |
| Keywords: | Digital watermarking DCT AC components DC components |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |