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| 小波域的自适应灰度图像水印算法 | |
| 引用本文： | 黄政,陈文举,王开建. 小波域的自适应灰度图像水印算法[J]. 贵州工业大学学报(自然科学版), 2008, 37(1): 48-52 |
| 作者姓名： | 黄政 陈文举 王开建 |
| 作者单位： | 贵州大学职业技术学院,贵州,贵阳,550003 |
| 摘 要： | 提出了一种基于小波变换的自适应灰度数字水印算法,该算法利用位平面方法将经过Arnold变换加密后的灰度水印图像转化为一系列的二值信息,然后将其内嵌到原始图像经过小波多分辨率分解后的低频子带上,并利用人眼视觉掩蔽特性对水印的添加强度进行自适应调节,并设立标志矩阵记录水印嵌入信息,从而实现水印的盲检测.理论分析与仿真结果表明应用本算法实现的水印具有很好的鲁棒性和不可见性. |
| 关 键 词： | 数字水印 小波变换 自适应 鲁棒性 |
| 文章编号： | 1009-0193(2008)01-0048-04 |
| 修稿时间： | 2007-09-12 |
A Self-Adaptive Algorithm of Gray-Level Image Watermark Based on Wavelet Transform |
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| HUANG Zheng,CHEN Wen-ju,WANG Kai-jian. A Self-Adaptive Algorithm of Gray-Level Image Watermark Based on Wavelet Transform[J]. Journal of Guizhou University of Technology(Natural Science Edition), 2008, 37(1): 48-52 | |
| Authors: | HUANG Zheng CHEN Wen-ju WANG Kai-jian |
| Affiliation: | HUANG Zheng,CHEN Wen-ju,WANG Kai-jian (College of Vocational Technology,Guizhou University,Guiyang 550003,China) |
| Abstract: | a self-adaptive algorithm of watermark based on wavelet transform is put forward,which decomposes a gray-level image watermark treated with Arnold scrambling into eight binary bit planes,and embeds eight binary bit planes into the wavelet-transformed original image.The method uses the characteristic of Human Visual System to adjust the intensity of the watermark adaptively.A sign matrix is set to record information about embedding watermark and be used for blind detecting the watermark.Theoretical analysis ... |
| Keywords: | digital watermarking wavelet transform adaptive robustness |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |