| 基于DWT域图像数字水印技术 |
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| 引用本文： | 顾宁,葛万成.基于DWT域图像数字水印技术[J].通信技术,2009,42(5):213-214. |
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| 作者姓名： | 顾宁 葛万成 |
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| 作者单位： | 同济大学中德学院,上海,200092 |
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| 基金项目： | 德国罗德与施瓦茨公司资助项目 |
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| 摘 要： | 提出了一种基于DWT域的自适应盲检测数字水印算法，将二值水印图像自适应地嵌入到经小波变换后的原始图像的逼近子图上。实验结果显示，不论是视觉主观还是客观计算上，此算法得到的水印图像都具有很好的不可见性，对常见图像攻击和处理后的水印检测情况证明此算法所得的水印图像具有很强的鲁棒性。
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| 关 键 词： | DWT 数字水印 置乱 |
Digital Watermarking Technology Based in DWT Domain |
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| GU Ning,GE Wan-cheng.Digital Watermarking Technology Based in DWT Domain[J].Communications Technology,2009,42(5):213-214. |
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| Authors: | GU Ning GE Wan-cheng |
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| Affiliation: | (Sino-German College for Postgraduates, Tongji University, Shanghai 200092, China) |
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| Abstract: | In this paper, an adaptive digital watermarking algorithm based on DWT is proposed. The digital image is transformed by using wavelet transform after scrambling. The watermark is adaptively embedded in the low frequency approximate sub-image of the original image according to neighboring symbol＇s mean value. The simulation results show that this algorithm has strong robustness against noise and attacks. |
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| Keywords: | DWT |
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