| 基于调色板图像的信息隐藏技术研究 |
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| 引用本文： | 伍宏涛,杨义先.基于调色板图像的信息隐藏技术研究[J].计算机工程与应用,2005,41(1):51-54,76. |
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| 作者姓名： | 伍宏涛 杨义先 |
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| 作者单位： | 北京邮电大学信息安全中心,北京,100876;北京邮电大学信息安全中心,北京,100876 |
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| 基金项目： | 国家973基础研究规划项目资助(编号:G1999035804) |
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| 摘 要： | 文章对已有的调色板图像的信息隐藏技术进行了分析,指出其存在的脆弱性问题,提出了一种空域高效鲁棒性信息隐藏算法,该算法可以抵抗“全选”、“拷贝”、“粘贴”到原始图像的操作,可以抵抗对调色板颜色的轻微修改,可以抵抗调色板图像在真彩和索引图像之间的转换,隐藏容量高达25%。出于信息隐藏安全性考虑,文章提出了一种改进算法,牺牲了隐藏容量,提高了视觉效果。
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| 关 键 词： | 信息隐藏 调色板 索引图像 |
| 文章编号： | 1002-8331-(2005)01-0051-04 |
Investigation of Information Hiding Technology to Palette-based Image |
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| Wu Hongtao,Yang Yixian.Investigation of Information Hiding Technology to Palette-based Image[J].Computer Engineering and Applications,2005,41(1):51-54,76. |
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| Authors: | Wu Hongtao Yang Yixian |
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| Abstract: | After pointing out the weakness of the known palette-based image information hiding by palette matrix,a new spacial effective robust information hiding algorithm is proposed,which can resist the operation of 'select all','copy','paste' from cover to original,and can resist gently modification the palette matrix,and can resist the image format changed between true color image and palette-based image.The hiding capacity can reach 25% of the number of pixel index matrix.Due to the advisement of information hiding security an update algorithm is proposed at the end of the paper,with the capacity reduced and increase of vision effect. |
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| Keywords: | information hiding palette index image |
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