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首页> 外文会议>Electrical amp; Electronics Engineering (EEESYM), 2012 IEEE Symposium on >Study of digital image watermarking algorithm using fractal
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Study of digital image watermarking algorithm using fractal

机译：基于分形的数字图像水印算法研究

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This paper firstly introduces the research present situation and related concepts of the digital watermarking. In others' algorithm study and on the basis of introducing chaos theory, the paper is based on the wavelet digital watermark of composite scrambling: firstly, it uses the cat transforming (Arnold scrambling) towards the binary watermarking images that were scrambling encryption, and then it produced a set of Logistic mapping random sequence, and the random sequence and scrambling encryption watermark are exclusive or the operation is in encryption. The wavelet transforming of original carrier image and the embedded watermark encryption are the final data to the low frequency sub-band of carrier image wavelet decomposition, and the embedding strength on the adjustment is according to the experimental results. From the watermark transparency and robustness of 2 experimental results, the experimental results show that it not only has good watermark transparency, but it also has strong robustness. After the introducing fractal theory, this paper puts forward the fractal combined with the digital watermark of wavelet domain: to make full use of wavelet transform after the direction with the son correlation, the decomposition of the series in wavelet decomposition is according to different coefficient construct wavelet tree, but it is in different wavelet tree series with the fractal structure. The watermark is embedded in the similar data matching tree. In the last algorithm simulation testing, the analysis of experimental results shows that the new algorithm has certain robustness and transparency.
机译：本文首先介绍了数字水印的研究现状及相关概念。在他人的算法研究中，在引入混沌理论的基础上，本文基于复合加扰的小波数字水印：首先，将cat变换（Arnold加扰）用于加扰加密的二进制水印图像，然后它产生了一组Logistic映射随机序列，该随机序列和加扰加密水印是互斥的，或者是加密操作。原始载波图像的小波变换和嵌入的水印加密是载波图像小波分解的低频子带的最终数据，调整的嵌入强度取决于实验结果。从2个实验结果的水印透明度和鲁棒性来看，实验结果表明它不仅具有良好的水印透明度，而且还具有很强的鲁棒性。在介绍了分形理论之后，提出了结合小波域数字水印的分形：为了充分利用子相关方向后的小波变换，小波分解中的级数分解根据不同的系数构造小波树，但它在不同的小波树序列中具有分形结构。水印被嵌入类似的数据匹配树中。在最后的算法仿真测试中，对实验结果的分析表明，新算法具有一定的鲁棒性和透明性。

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