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基于稀疏表示与密写的数字图像分存

Digital Image Sharing Based on Sparse Representation and Steganography
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摘要 提出了一种基于稀疏表示与密写的数字图像分存方法.将稀疏表示、信息隐藏、分存技术三者有机结合,利用的(r,n)门限方案生成n份影子图像;再用稀疏表示及密写编码的方案分别将它们伪装在n幅有意义的载体图像中.与传统的基于拉格朗日插值以及LSB(Least Significant Bit,最不重要比特位)替换的方法相比,在嵌入秘密信息量相同的情况下,该方法在很大程度上减少了对载体图像的修改量,极大地降低了信息隐藏引起的失真,并通过实验验证了该算法的有效性和优越性. An image sharing scheme based on sparse representation and steganography is proposed in this pa- per. The proposed scheme combines the sparse representation technique, information hiding and sharing technique. Firstly, the shadow images are generated by （ r, n） threshold approach, then the shadow images are embed into the meaningful cover images. Compared with traditional methods based on Lagrange least significant bit, the proposed scheme can reduce the amount of alterations necessary to be cover image. The experimental results show the effectiveness and superiority interpolation and introduced into a
作者 吴莉
机构地区 四川师范大学数学与软件科学学院 阿坝师范高等专科学校数学系
出处 《绵阳师范学院学报》 2013年第5期74-78,共5页 Journal of Mianyang Teachers＇ College
基金 四川省教育厅自然科学基金项目(12ZB002) 阿坝师专校级科研基金资助项目(ASB12-22)
关键词 图像分存 稀疏表示 密写 Image sharing sparse representation steganography
分类号 TP309.7 [自动化与计算机技术—计算机系统结构]
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参考文献11

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二级参考文献12

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共引文献8

绵阳师范学院学报
2013年 第5期

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