| 一种基于位置图的可逆水印方案 |
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| 引用本文： | 王继军.一种基于位置图的可逆水印方案[J].计算机工程与应用,2013(4):87-90. |
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| 作者姓名： | 王继军 |
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| 作者单位： | 广西财经学院 信息与统计学院,南宁 530003 |
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| 基金项目： | 广西教育厅项目(No.201106LX485);广西财经学院校级课题(No.2011A04) |
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| 摘 要： | 提出一种基于位置图的可逆水印算法,选取载体图像的低位平面值作为水印嵌入位置,将载体图像分块,根据分块中低位平面像素值的大小关系将其分成三种不同类型的组,并用变长编码方式对组别进行算术编码,经逐组顺次判断便形成位置图编码,根据位置图信息,将位置图编码、水印信息、位置图所占用像素的LSB全部嵌入载体图像的低位,形成加密图像;提取时,先获取位置图,然后根据位置图无损提取水印,无损还原载体图像。算法具有可逆性和可多重嵌入性,安全性高、隐蔽性好、适用性强。
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| 关 键 词： | 可逆水印 位置图 无损数据嵌入 信息隐藏 最低有效位 |
Algorithm for reversible watermarking based on location map |
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| WANG Jijun.Algorithm for reversible watermarking based on location map[J].Computer Engineering and Applications,2013(4):87-90. |
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| Authors: | WANG Jijun |
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| Affiliation: | WANG Jijun Guangxi University of Finance and Economics, Nanning 530003, China |
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| Abstract: | This paper presents an algorithm for reversible watermarking based on location map. The host image is divided into blocks, then make sure the kind of every block according to the data magnitude, after that location map and its coding are produced. The watermarking is embedded according to location map and mixed embedding method. Theory and experimental result indicates that this method can meet the different needs by selecting the appropriate parameter. Theoretical analysis and experimental results show that the algorithm is reversible and effective and secure. |
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| Keywords: | reversible watermarking location map reversible data embedding information hiding Least Significant Bit(LSB) |
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