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| 基于小波变换的静态图像数字水印研究 | |
| 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]. 河北工业科技, 2012, 29(6): 398-400 |
| 作者姓名： | 祁伟 刘文芳 吕翠改 宋曼 |
| 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 |
| 基金项目： | 石家庄市科技局科技支撑指令性课题资助项目 |
| 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。 |
| 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]. Hebei Journal of Industrial Science & Technology, 2012, 29(6): 398-400 | |
| Authors: | QI Wei LIU Wen-fang LYU Cui-gai SONG Man |
| Affiliation: | 1.Department of Organization,Hebei University of Science and Technology,Shijiazhuang Hebei 050018,China;2.Information 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) |
| 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 information.It is invisible for human eyes,greatly enhancing the robustness of watermark.The experiments show that the algorithm has good imperceptibility and strong robustness. |
| Keywords: | digital watermarking wavelet transform static image Matlab |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |