基于频率选择扩容的JPEG图像可逆信息隐藏技术
TP309.2%TN918.4; JPEG图像的可逆信息隐藏技术已被广泛利用,为了提高JPEG图像在可逆信息隐藏过程中的嵌入容量和嵌入效率,文中提出了一种基于频率选择扩容的可逆信息隐藏技术.首先对原始图像进行量化,生成若干个离散余弦变换(DCT)块,将DCT块根据块内是否含有±3和±4值的交流系数值分成两种类型,以选择不同的嵌入位置进行嵌入,并根据频率选择策略计算块内各位置的嵌入失真,按照嵌入失真排序后的频率选择嵌入位置并嵌入秘密信息.实验结果表明,文中的算法扩大了嵌入容量且减小了文件增加量....
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| Published in | 华南理工大学学报（自然科学版） Vol. 50; no. 1; pp. 109 - 121 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | Chinese |
| Published |
安徽大学多模态认知计算安徽省重点实验室安徽合肥230601
2022
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-565X |
| DOI | 10.12141/j.issn.1000-565X.210062 |
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| Abstract | TP309.2%TN918.4; JPEG图像的可逆信息隐藏技术已被广泛利用,为了提高JPEG图像在可逆信息隐藏过程中的嵌入容量和嵌入效率,文中提出了一种基于频率选择扩容的可逆信息隐藏技术.首先对原始图像进行量化,生成若干个离散余弦变换(DCT)块,将DCT块根据块内是否含有±3和±4值的交流系数值分成两种类型,以选择不同的嵌入位置进行嵌入,并根据频率选择策略计算块内各位置的嵌入失真,按照嵌入失真排序后的频率选择嵌入位置并嵌入秘密信息.实验结果表明,文中的算法扩大了嵌入容量且减小了文件增加量. |
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| AbstractList | TP309.2%TN918.4; JPEG图像的可逆信息隐藏技术已被广泛利用,为了提高JPEG图像在可逆信息隐藏过程中的嵌入容量和嵌入效率,文中提出了一种基于频率选择扩容的可逆信息隐藏技术.首先对原始图像进行量化,生成若干个离散余弦变换(DCT)块,将DCT块根据块内是否含有±3和±4值的交流系数值分成两种类型,以选择不同的嵌入位置进行嵌入,并根据频率选择策略计算块内各位置的嵌入失真,按照嵌入失真排序后的频率选择嵌入位置并嵌入秘密信息.实验结果表明,文中的算法扩大了嵌入容量且减小了文件增加量. |
| Author | 檀胜 吕皖丽 |
| AuthorAffiliation | 安徽大学多模态认知计算安徽省重点实验室安徽合肥230601 |
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| Author_FL | TAN Sheng Lü Wanli |
| Author_FL_xml | – sequence: 1 fullname: Lü Wanli – sequence: 2 fullname: TAN Sheng |
| Author_xml | – sequence: 1 fullname: 吕皖丽 – sequence: 2 fullname: 檀胜 |
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| DocumentTitle_FL | Reversible Data Hiding Technology for JPEG Images Based on Frequency Selective Expansion |
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| Keywords | JPEG图像;可逆信息隐藏;交流系数;直方图平移;频率选择 |
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