[ "徐甲甲(1987-),男,安徽亳州人,中国科学技术大学博士生,主要研究方向为信息隐藏、视频编码与视频分析。" ]
[ "张卫明(1976-),男,河北定州人,中国科学技术大学副教授,主要研究方向为信息隐藏、密码学和媒体内容安全。" ]
[ "蒋瑞祺(1989-),男,安徽淮南人,中国科学技术大学博士生,主要研究方向为信息隐藏、媒体内容安全。" ]
[ "俞能海(1964-),男,安徽无为人,中国科学技术大学教授、博士生导师,主要研究方向为图像处理与媒体内容安全、互联网信息检索与数据挖掘。" ]
[ "胡校成(1988-),男,湖南常德人,中国科学技术大学博士生,主要研究方向为信息隐藏、媒体内容安全。" ]
网络首发:2016-02,
纸质出版:2016-02-15
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徐甲甲, 张卫明, 蒋瑞祺, 等. 最优结构相似约束下的可逆信息隐藏算法研究[J]. 网络与信息安全学报, 2016,2(2):55-61.
Jia-jia XU, Wei-ming ZHANG, Rui-qi JIANG, et al. Optimal structural similarity constraint for reversible data hiding[J]. Chinese Journal of Network and Information Security, 2016, 2(2): 55-61.
徐甲甲, 张卫明, 蒋瑞祺, 等. 最优结构相似约束下的可逆信息隐藏算法研究[J]. 网络与信息安全学报, 2016,2(2):55-61. DOI: 10.11959/j.issn.2096-109x.2016.00032.
Jia-jia XU, Wei-ming ZHANG, Rui-qi JIANG, et al. Optimal structural similarity constraint for reversible data hiding[J]. Chinese Journal of Network and Information Security, 2016, 2(2): 55-61. DOI: 10.11959/j.issn.2096-109x.2016.00032.
绝大多数可逆信息隐藏技术常用峰值信噪比(PSNR)来评价算法的效果,PSNR 是基于均方误差(MSE)的评价指标。但是 PSNR 在图像评价方面是存在客观局限性的。近年来,结构相似性(SSIM)作为一种评价图像相似程度的指标受到了广泛的关注,相较于传统的PSNR,SSIM在图像品质的衡量上更能符合人眼对图像品质的判断,如何利用SSIM的特性去设计可逆信息隐藏算法很关键。针对SSIM结构相似约束,提出了一种最优可逆信息隐藏的算法。首先,推导出了SSIM对应的度量函数;其次,构造了最优结构相似约束下的率失真函数;最后,根据递归直方图修改算法实现了最优嵌入。实验结果表明,相比以前的算法,在嵌入同样信息量的情况下,在SSIM评价方面取得了更好的效果,有效提升了可逆信息隐藏的效率。
Most reversible data hiding (RDH) techniques have been evaluated by PSNR
which is based on MSE.Unfortunately
MSE turns out to be an extremely poor measure when the purpose is to predict perceived signal fidel-ity or quality.The structural similarity index has gained widespread popularity as an alternative motivating principle for the design of image quality measures.How to utilize the characterize of SSIM to design RDH algorithm is very critical.An optimal RDH algorithm under structural similarity constraint was proposed.Firstly
the metric of the structural similarity constraint was deduced.Secondly
the rate-distortion function of optimal structural similarity constraint was constructed
which was equivalent to minimize the average distortion for a given embedding rate.Fi-nally
the optimal transition probability matrix under the structural similarity constraint was obtained.Experiments show that the proposed method can be used to improve the performance of previous RDH schemes evaluated by SSIM.
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Laboratory for image and video engineering [EB/OL ] . http://live.ece.utexas.edu/. http://live.ece.utexas.edu/. .
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