| 基于小波变换的低频数字水印嵌入算法 |
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| 引用本文： | 吕振肃,应隽,李宏.基于小波变换的低频数字水印嵌入算法[J].兰州大学学报(自然科学版),2004,40(6):39-42. |
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| 作者姓名： | 吕振肃 应隽 李宏 |
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| 作者单位： | 兰州大学,信息科学与工程学院,甘肃,兰州,730000 |
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| 基金项目： | 甘肃省自然科学基金资助项目(ZS011-A25-016-G). |
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| 摘 要： | 提出了一种基于小波变换低频系数的数字水印嵌入和检测算法．二值水印首先经过Arnold变换后再嵌入在原始图像的低频部分，仍能保持良好的视觉效果，进一步证明了低频部分不是水印的禁区．实验结果表明该算法有较好抗JPEG压缩、低通滤波等攻击的能力．
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| 关 键 词： | 小波变换 数字水印 扩频 |
| 文章编号： | 0455-2059(2004)06-0039-04 |
A kind of watermarking algorithm based on wavelet transform |
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| L U Zhen-su,YING Jun,LI Hong.A kind of watermarking algorithm based on wavelet transform[J].Journal of Lanzhou University(Natural Science),2004,40(6):39-42. |
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| Authors: | L U Zhen-su YING Jun LI Hong |
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| Abstract: | A new watermarking algorithm is proposed in the paper and watermarks were embedded in the low-frequency subband after multiresolution decomposition, which proved that a low-frequency subband is not a forbidden zone. Experiments showed that the algorithm in this paper could resist damage from JPEG compression, random noising and cropping attacks. |
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| Keywords: | wavelet transform digital watermark spread spectrum |
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