| 基于小波变换的静态图像数字水印研究 |
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| 引用本文： | 祁伟,刘文芳,吕翠改,宋曼. 基于小波变换的静态图像数字水印研究[J]. 河北机电学院学报, 2012, 0(6): 398-400 |
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| 作者姓名： | 祁伟 刘文芳 吕翠改 宋曼 |
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| 作者单位： | [1]河北科技大学组织部,河北石家庄050018 [2]河北省财政厅信息中心,河北石家庄050051 [3]河北科技大学信息科学与工程学院,河北石家庄050018 [4]河北省信息资源管理中心,河北石家庄050071 |
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| 基金项目： | 石家庄市科技局科技支撑指令性课题资助项目（11113611A） |
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| 摘 要： | 通常静态图像经过离散余弦（DCT）小波变换后，纹理及边缘的特征主要集中在高频子带LH，HL和HH上，经过一般的图像处理以后，高频上的信息容易丢失。在嵌入的水印信息量较少的情况下，可以把水印信息嵌入到低频系数上，使人眼不易察觉，增强了水印的鲁棒性。实验表明，该算法有良好的不可感知性和强健的鲁棒性。
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| 关 键 词： | 数字水印 小波变换 静态图像 Matlab |
Research on digital watermark of static image based on wavelet transform |
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| QI Wei,LIU Wen-fang,LYU Cui-gai,SONG Man. Research on digital watermark of static image based on wavelet transform[J]. , 2012, 0(6): 398-400 |
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| Authors: | QI Wei LIU Wen-fang LYU Cui-gai SONG Man |
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| Affiliation: | 1. Department of Organization, Hebei University of Science and Technology, Shijiazhuang Hebei 050018,China; 2. Informa- tion Center, Hebei Provincial Department of Finance, Shijiazhuang Hebei 050051, China;3. College of Information Science and Engineering, Hebei University of Science and Technology, Shijiazhuang Hebei 050018,China; 4. Hebei Information Resource Management Center, Shijiazhuang Hebei 050071, China) |
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| Abstract: | Usually a static image is transformed by discrete cosine （DCT）, while texture and edge features concentrates in the high frequency subbands LH, HL and HH. The high-frequency information is easy to lose after a general image processing. This paper advised to embed the watermark information into the low-frequency coefficients in case of less embedded informa tion. It is invisible for human eyes, greatly enhancing the robustness of watermark. The experiments show that the algorithm has good imperceptibility and strong robustness. |
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| Keywords: | digital watermarking wavelet transform static image Matlab |
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