| DCT域中DC分量上嵌入水印的算法 |
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| 引用本文： | 程兴国,王襄,曾嵘.DCT域中DC分量上嵌入水印的算法[J].现代电子技术,2007,30(3):57-59. |
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| 作者姓名： | 程兴国 王襄 曾嵘 |
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| 作者单位： | 1. 襄樊学院,湖北,襄樊,441053
2. 十堰职业技术学院,湖北,十堰,442000 |
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| 摘 要： | 在DCT域中,存在AC,DC两个分量,通常在图像加密过程中,将水印嵌入AC分量,特别是中频系数上。本文从鲁棒性角度出发,通过实验证明,在实际应用中,DC分量比AC分量更适合嵌入水印。DC分量嵌入水印是有效的,且具有很好的鲁棒性,能抵御加在已嵌入水印的图像上的剪切、有损压缩的攻击。
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| 关 键 词： | 数字水印 离散余弦变换 鲁棒性 直流分量 交流分量 |
| 文章编号： | 1004-373X（2007）03-057-03 |
| 收稿时间： | 2006-07-05 |
| 修稿时间： | 2006年7月5日 |
Algorithm of Watermarks Embedded in DC Components in DCT |
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| CHENG Xingguo,WANG Xiang,ZENG Rong.Algorithm of Watermarks Embedded in DC Components in DCT[J].Modern Electronic Technique,2007,30(3):57-59. |
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| Authors: | CHENG Xingguo WANG Xiang ZENG Rong |
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| Affiliation: | 1. Xiangfan University, Xiangfan, 441053, China ; 2. Shiyan Technical Institute, Shiyan, 442000, China |
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| Abstract: | In DCT domain,exist AC and DC,the traditional means is to hide watermarking in the AC components,especially in the middle-frequency coefficients.From robustness,in actual application,watermarks are embedded in DC components since DC components have much larger perceptual capacity than any AC components.Experimental results demonstrate the strategy,which embeds watermarks in DC components is effective and generated good robustness,and images embedded watermarks can withstand attacks which exerted by tailoring,loss compression. |
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| Keywords: | digital watermark DCT robustness DC AC |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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