| 一种基于小波变换的图像盲水印算法 |
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| 引用本文： | 吕宗宝.一种基于小波变换的图像盲水印算法[J].计算机与现代化,2010(6):55-57,60. |
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| 作者姓名： | 吕宗宝 |
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| 作者单位： | 黑龙江科技学院计算机与信息工程学院,黑龙江,哈尔滨,150027 |
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| 基金项目： | 黑龙江省教育厅科学技术研究项目(11531335);;哈尔滨市科技创新人才研究专项资金资助项目(2008RFQXG110) |
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| 摘 要： | 提出一种基于小波变换的图像盲水印算法。在对原始图像进行二级小波变换后的低频子带上通过一定的策略选择感知重要系数作为水印的嵌入区域,并将水印重复嵌入到低频子带中以提高水印检测的正确率。通过对嵌入水印的图像进行加噪、压缩以及裁剪等实验,均能正确检测出水印,且水印透明性好,表明该算法具有较高的鲁棒性。
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| 关 键 词： | 数字水印 小波变换 图像置乱 盲检测 |
A Blind Image Watermarking Algorithm Based on Wavelet Transform |
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| L Zong-bao.A Blind Image Watermarking Algorithm Based on Wavelet Transform[J].Computer and Modernization,2010(6):55-57,60. |
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| Authors: | L Zong-bao |
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| Affiliation: | College of Computer and Information Engineering/a>;Heilongjiang Science and Technology University/a>;Harbin 150027/a>;China |
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| Abstract: | An algorithm based on wavelet transform for hiding digital watermark in image is presented. In this algorithm,a 2-level DWT decomposition of the original image is performed and then the important perceived factors are adopted by certain strategies as a watermark embedding regions. The watermark is embedded into the low-frequency sub-band repeatedly in order to improve the accuracy of the watermark detection. Test results show the good transparency of the watermark and the good robustness of the algorithm fo... |
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| Keywords: | digital watermark Discrete Wavelet Transform （ DWT） image scrambling blind detection |
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