| 用于图像认证的水印算法设计与硬件实现 |
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| 引用本文： | 徐国银, 朱建银, 沈海斌, 时晓东,. 用于图像认证的水印算法设计与硬件实现[J]. 电子器件, 2007, 30(2): 546-549 |
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| 作者姓名： | 徐国银 朱建银 沈海斌 时晓东 |
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| 作者单位： | 杭州文化电视广播集团,杭州,310004;浙江大学超大规模集成电路设计研究所,杭州,310027 |
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| 摘 要： | 为实现图像完整性认证,在分析现有各种脆弱水印算法的基础上,一种新的变换域脆弱水印算法被提出.该算法利用离散余弦变换(DCT)系数查表生成水印,嵌入的水印不可见性好,水印图像能有效检测各种攻击,具有良好的认证效果.此外该算法适用于硬件实现,且能方便地嵌入到现有的JPEG压缩器中,具有速度快、面积小的特点.
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| 关 键 词： | 图像认证 脆弱水印 DCT JPEG |
| 文章编号： | 1005-9490(2007)02-0546-04 |
| 修稿时间： | 2006-04-21 |
Design and Implementation of a Watermarking Algorithm for Image Authentication |
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| XU Guo-yin,ZHU Jian-yin,SHEN Hai-bin,SHI Xiao-dong. Design and Implementation of a Watermarking Algorithm for Image Authentication[J]. Journal of Electron Devices, 2007, 30(2): 546-549 |
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| Authors: | XU Guo-yin ZHU Jian-yin SHEN Hai-bin SHI Xiao-dong |
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| Affiliation: | Institute of VLSI Design,Zhejiang University,Hangzhou 310027,China;2.Hangzhou Cultural Radio-Television group,Hangzhou 310004,China |
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| Abstract: | In order to authenticate the image integrality,a new and effective fragile watermarking algorithm is proposed based on the analysis of previous watermarking algorithm.Watermark in this algorithm is generated by using DCT coefficients via a look-up table.By using this algorithm,invisibility feature of watermark and anti-attack ability of the marked image are both greatly improved.Moreover,the proposed algorithm can not only be easily embedded into JPEG,but is very suitable for the hardware implementation. |
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| Keywords: | image authentication fragile watermarking DCT JPEG |
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