| 基于图像压缩量化系数的自适应水印算法 |
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| 引用本文： | 吴国庆,郑东.基于图像压缩量化系数的自适应水印算法[J].电视技术,2011,35(17):18-20. |
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| 作者姓名： | 吴国庆 郑东 |
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| 作者单位： | 1. 青海民族大学物理与电子信息工程学院,青海西宁,810007
2. 上海交通大学信息安全学院,上海,200240 |
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| 摘 要： | 提出了一种基于图像压缩系数量化的自适应数字图像水印算法。该算法利用图像压缩中量化系数的特性,在其中嵌入水印。为增强水印的安全性用LFSR将置乱后的二值水印图像量化嵌入到载体图像的系数中,水印检测过程不需要原始图像的参与。实验结果表明,该算法不仅具有良好的不可见性,而且对常见攻击如JPEG压缩、噪声、滤波和几何攻击等具有较强的稳健性。
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| 关 键 词： | 数字水印 量化系数 离散余弦变换 |
Self-adaptive Digital Watermarking Algorithm Based on Quantizing Coefficients in Image Compression |
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| WU Guoqing,ZHENG Dong.Self-adaptive Digital Watermarking Algorithm Based on Quantizing Coefficients in Image Compression[J].Tv Engineering,2011,35(17):18-20. |
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| Authors: | WU Guoqing ZHENG Dong |
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| Affiliation: | WU Guoqing1,ZHENG Dong2(1.School of Physics and Electronic and Information Engineering,Qinghai University for Nationalities,Xining 810007,China,2.School of Information Security Engineering,Shanghai Jiao Tong University,Shanghai 200240,China) |
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| Abstract: | A watermark embedding and extracting method for quantizing coefficients in Image compression is proposed.It uses the characteristics of scalar quantize.In the embedding process,a Linear Feedback Shift Register(LFSR) is used to hide the watermark information and the watermark positions.The watermark can be extracted without resorting the original image.The experimental results show that the proposed method satisfies enough imperceptibility and robustness for common attacks such as JPEG compression,adding noi... |
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| Keywords: | digital watermarking quantized coefficients Discrete Cosine Transform(DCT) |
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