| 基于改进遗传算法的下采样图像水印算法研究 |
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| 引用本文： | 魏志成,李建雄,戴居丰. 基于改进遗传算法的下采样图像水印算法研究[J]. 光电子．激光, 2007, 18(7): 850-854 |
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| 作者姓名： | 魏志成 李建雄 戴居丰 |
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| 作者单位： | 天津大学电子信息工程学院,天津,300072;河北师范大学网络工程系,河北,石家庄,050016;天津大学电子信息工程学院,天津,300072 |
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| 摘 要： | 提出了一种基于遗传算法(GA)的下采样图像盲水印算法.首先对宿主图像下采样,然后用改进的GA全局搜索最优的子图水印嵌入序列,按顺序把符合标准正态分布的水印分量依次嵌入1对子图的离散余弦变换(DCT)系数中.提出的交叉算子和变异算子改进了GA的自适应性和搜索能力,提高了水印算法的综合顽健性.仿真结果表明,该算法添加水印后的图像在保持高保真度的同时,对低通、高通和压缩等攻击的顽健性有明显提升.
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| 关 键 词： | 数字水印 遗传算法(GA) 下采样 交叉算子 变异算子 |
| 文章编号： | 1005-0086（2007）07-0850-05 |
| 修稿时间： | 2006-06-01 |
GA-based Image Watermarking Using Subsampling |
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| WEI Zhi-cheng,LI Jian-xiong,DAI Ju-feng. GA-based Image Watermarking Using Subsampling[J]. Journal of Optoelectronics·laser, 2007, 18(7): 850-854 |
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| Authors: | WEI Zhi-cheng LI Jian-xiong DAI Ju-feng |
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| Affiliation: | 1. School of Electronic Information Engineering,Tianjin University,Tianjin 300072,China; 2. Department of Net work Engineering, Hebei Nonaml University,Shijiazhuang 050016 ,China |
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| Abstract: | In order to improve the robustness of digital image watermaking method,genetic algorithm(GA)based watermarking scheme is proposed in the study.The algorithm subsamples the host image for embedding the watermark information respectively and detecting the watermark bindly.GA is used to search the best embedding order sequence according to which the watermark with standard normal distribution will be inserted into the discrete cosine transform(DCT)coefficients of the subimages.The crossover and mutation operat... |
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| Keywords: | watermarking genetic algorithm(GA) subsampling crossover operator mutation operator |
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