抵抗几何攻击的数字图像水印

桑茂栋; 赵耀

抵抗几何攻击的数字图像水印

桑茂栋,
赵耀

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出版历程
- 收稿日期: 2003-07-05
- 修回日期: 2004-01-22
- 刊出日期: 2004-12-19

Digital Image Watermarking Resisting to Geometrical Attacks

摘要

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。
- 数字图像水印; 版权保护; 鲁棒性; HVS; 几何攻击; 仿射变换
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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参考文献(1)

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