| 抵抗几何攻击的数字图像水印 |
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| 引用本文： | 桑茂栋, 赵耀. 抵抗几何攻击的数字图像水印[J]. 电子与信息学报, 2004, 26(12): 1875-1881. |
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| 作者姓名： | 桑茂栋 赵耀 |
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| 作者单位： | 北京交通大学信息科学研究所,北京,100044;北京交通大学信息科学研究所,北京,100044 |
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| 基金项目： | 国家自然科学基金(60172062,60373028)，霍英东青年教师基金(81053)，留学回国人员科研启动基金资助课题 |
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| 摘 要： | 该文实现了一种抵抗几何攻击的数字图像水印方案。水印信号为根据密钥产生的服从正态分布的实数序列，对水印信号作预处理并进行周期化之后在空域将其嵌入数字图像中。检测端不需要原始图像，根据预测水印的自相关函数(ACF)判断水印图像遭受的几何变换攻击并进行逆变换，然后进行水印检测。实验表明该方案对压缩、滤波、剪切等常见的图像处理攻击同样具有很高的鲁棒性。
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| 关 键 词： | 数字图像水印 版权保护 鲁棒性 HVS 几何攻击 仿射变换 |
| 文章编号： | 1009-5896(2004)12-1875-07 |
| 收稿时间： | 2003-07-05 |
| 修稿时间： | 2003-07-05 |
Digital Image Watermarking Resisting to Geometrical Attacks |
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| Sang Mao-dong, Zhao Yao. Digital Image Watermarking Resisting to Geometrical Attacks[J]. Journal of Electronics & Information Technology, 2004, 26(12): 1875-1881. |
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| Authors: | Sang Mao-dong Zhao Yao |
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| Affiliation: | Institute of Info. Science Beijing Jiaotong University Beijing 100044 China |
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| Abstract: | In this paper a watermarking scheme for digital image that can resist geometrical attacks is proposed. The watermark is a key-dependent random vector according to Gaussian distribution. After preprocessed and periodized, the watermark is embedded into cover image in spatial domain exploiting the properties of HVS. The cover image is not needed in watermark detection process. First, compute the Autocorrelation Function(ACF) of estimated watermark. The peaks of ACF are used to determine the geometrical attacks applied to the stegoimage. Experimental results show the scheme is robust to compression, filtering, cropping as well as geometrical attacks. |
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| Keywords: | Digital image watermarking Copyright protection Robustness HVS Geometrical attacks Affine transformation |
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