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基于函数映射机制的鲁棒性二重数字水印算法
张渊,丁勇,罗小华
作者单位E-mail
张渊 浙江大学 460851971@qq.com 
丁勇 浙江大学  
罗小华 浙江大学  
摘要:
针对二重数字水印嵌入信息量相对较大及其水印之间相互干扰的特点,本文提出了一种基于函数映射机制的二重数字水印算法。将第一、二重水印建立某种函数映射关系,在嵌入水印时,只需嵌入一份水印样本,并联合小波变换、离散余弦变换和奇异值分解技术,将水印嵌入在寄主图像中。实验表明,该算法不仅有很好的透明性,而且对各种常规数字信号处理和几何攻击也有很强的鲁棒性。
关键词:  数字水印  小波变换  离散余弦变换  几何攻击
DOI:
分类号:
基金项目:国家高技术研究发展计划(863计划)
Robust Dual Digital Watermarking Algorithm Based on Function Mapping Mechanism
zhangyuan,dingyong,luoxiaohua
Abstract:
For the characteristics of dual digital watermarking, in which information capacity to be embedded is relative large and the two watermarks interfere with each other, a robust dual digital watermarking algorithm based on function mapping mechanism is proposed in this paper. In the algorithm some kind of function mapping relationship between the first level watermark and the second level watermark is established. Thus, only one watermark is needed. Then the watermark is embeded in host image using the discrete wavelet transform, discrete cosine transform and singular value decomposition technology. Experimental results show that the proposed scheme not only has a good transparency ,but also is robust to many kinds of common digital signal processing and geometrical attacks
Key words:  digital watermarking  discrete wavelet transform  discrete cosine transform  geometrical attacks

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