A wavelet-based method of zero-watermark
A wavelet-based method of zero-watermark
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DOI：
10.1109/icwapr.2009.5207492
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发表时间：
2009-07
期刊：
影响因子：
--
通讯作者：
Sheng-bing Che;Bin Ma;Zuguo Che;Quiangbo Huang
中科院分区：
文献类型：
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作者：
Sheng-bing Che;Bin Ma;Zuguo Che;Quiangbo Huang
本文利用零水印的优点，提出了一种基于小波变换的数字图像水印算法。该算法通过异或运算产生密钥，由于像素点的位置变化很小，因此具有很强的鲁棒性。同时由于它不修改原始图像的数据，所以具有很强的不可见性。实验表明，该算法对JPEG压缩、加噪、平滑滤波等图像处理具有较好的鲁棒性。同时，由于嵌入信息量大，数据位数达到原始图像像素数的四分之一。而且，它还能准确地确定恶意攻击的位置。
In this paper, a wavelet-based digital image watermarking algorithm is putforward, advantage of the zero-watermark. In proposed algorithm, the key is generated by XOR operation.This algorithm has very srong robustness, because of the pixel point are hardly changed. At the same time it has very strong invisibility because it dose not modify the data of the original image. Experiments show that a better robustness to the image processing such as JPEG compression, noise adding and smoothing filtering can be achieved. Meanwhile, embedding infomation in a large amount, the number of data bits reaches to a quarter that of the original image pixels. What's more, it can ascertain the position of vicious attack exactly.