| 一种基于NMF的零水印算法 |
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| 引用本文： | 牛万红,潘晨. 一种基于NMF的零水印算法[J]. 济南大学学报(自然科学版), 2009, 23(3): 270-274 |
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| 作者姓名： | 牛万红 潘晨 |
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| 作者单位： | 宁夏大学,远程教育学院,宁夏,银川,750021;中国计量学院,信息工程学院,浙江,杭州,310018 |
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| 摘 要： | 提出一种基于非负矩阵分解(Non-negative Matrix Factorization, NMF)构造密钥的二值零水印算法.先对载体图像进行NMF变换得到基于部分表示的基矩阵和相应的系数矩阵;再将水印置乱并扩展为系数矩阵的大小,比较相同位置上的二值水印与系数阵元素二进制编码的某个高位面值;当结果相同时,标记其位置在一个空白矩阵中,该矩阵随后作为密钥来检测水印.经过这样处理,水印信息嵌入到系数阵元素的高位面却并没有改变其值,使得嵌入水印图像表现出较好的抗攻击性能.通过与DCT零水印算法的比较实验,证明了本文算法的有效性.
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| 关 键 词： | 非负矩阵分解 零水印 鲁棒性 |
A Non-Watermarking Algorithm Based on NMF |
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| NIU Wan-hong,PAN Chen. A Non-Watermarking Algorithm Based on NMF[J]. Journal of Jinan University(Science & Technology), 2009, 23(3): 270-274 |
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| Authors: | NIU Wan-hong PAN Chen |
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| Affiliation: | 1.School of Remote Education;Ningxia University;Yinchuan;750021;China;2.College of Information Engineering;China Jiliang University;Hangzhou;310018;China |
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| Abstract: | This paper presents a non-watermarking algorithm via NMF structuring key.Firstly,Non-negative matrix factorization(NMF) is used to translate the vector image into the base matrix and the corresponding coefficient matrix.Secondly,the binary watermarking image is scrambled and extended to the size of the coefficient matrix.Then the value of pixel of watermarking is compared with the value of the high bit-plane in binary encoding of the coefficient matrix.If their values are equal,we mark the location of the c... |
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| Keywords: | non-negative matrix factorization non-watermarking robustness |
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