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基于嵌入式小波编码的数字图像水印算法

DOI: 10.11834/jig.20020226

Keywords: 数字水印,版权保护,离散小波变换,嵌入式小波编码,数字图象,水印算法,图象处理

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Abstract:

提出了一种基于嵌入式小波编码的水印算法。该算法根据Watsom关于小波系数量化噪声可见性研究的一些结果,将水印自适应地嵌入到小波变换的不同分辨率和不同方位的重要系数中。水印的检测是分级渐进地进行的,从而提高了水印检测的效率。文中实现了两种不同形式的水印:标志图象的水印和伪随机序列的水印。实验结果表明,该水印算法对图象处理和压缩等运算有较强的鲁棒性。

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