| 一种基于系数关系的小波域盲水印算法 |
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| 引用本文： | 白梅,王慧琴,杜高峰,毛力. 一种基于系数关系的小波域盲水印算法[J]. 信息安全与通信保密, 2007, 0(6): 171-173 |
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| 作者姓名： | 白梅 王慧琴 杜高峰 毛力 |
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| 作者单位： | 西安建筑科技大学信息与控制工程学院,陕西西安710055 |
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| 基金项目： | 陕西省教育厅资助项目;陕西省自然科学基金 |
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| 摘 要： | 论文提出了一种DWT域基于系数关系的盲提取图像水印算法。对原始图像进行两层小波分解,比较第二层的对角分量与近似分量得到一个逻辑矩阵,将该逻辑矩阵与置乱后的二值水印图像进行对比,根据对比的结果修改第二层的对角分量,使得逻辑矩阵与二值水印信息一致,从而实现了二值水印图像的嵌入。水印的提取实现了盲提取。
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| 关 键 词： | 数字水印 DWT变换 逻辑矩阵 置乱处理 |
| 文章编号： | 1009-8054(2007)06-0171-03 |
| 修稿时间： | 2006-11-07 |
A Blind Watermarking Algorithm Based on the Relationship of Coefficients in DWT Domain |
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| BAI Mei,WANG Huiqin,DU Gaofeng,MAO Li. A Blind Watermarking Algorithm Based on the Relationship of Coefficients in DWT Domain[J]. China Information Security, 2007, 0(6): 171-173 |
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| Authors: | BAI Mei WANG Huiqin DU Gaofeng MAO Li |
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| Abstract: | A blind watermarking algorithm based on the relationship of coefficients in the Discrete Wavelet Transform(DWT)domain is proposed.The original image is first decomposed with double wavelet transform,through comparing the second level diagonal coefficients with approximate coefficients,a logical matrix is obtained,and then by comparing it with the watermark scrambled image,modifying the diagonal coefficients according to the compared result,making the logical matrix accord with watermark,the process of embedding watermark is thus finished.The binary watermark is extracted from the watermarked image without original image.The experimental results indicate that the algorithm is invisible and robust against the general image-processing methods. |
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| Keywords: | Digital watermarking DWT logical matrix Scrambling |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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