基于序列动态选择的PVO可逆信息隐藏算法
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摘要
针对灰度图随着嵌入容量的提高而导致失真明显的问题,提出一种基于序列动态选择的可逆信息隐藏算法.新算法在动态分块像素值排序(PVO)算法基础上进行改进,对动态分类复杂像素块中可能存在的可嵌序列,利用阈值判定实现动态选择,然后对动态选择获得的可嵌序列进行I-PVO可逆信息嵌入.仿真结果表明,所提出的算法在嵌入容量和图像失真度性能方面有明显提高.
In order to reduce the influence of the obvious distortion of grayscale graphs with the increase of embedding capacity,an improved reversible data hiding algorithm based on sequence dynamic selection was proposed. The new algorithm was improved on the basis of pixel value ordering( PVO) and dynamic pixel block partition,and the possible embedded sequence in complex pixel blocks was selected during the dynamic classification by adaptive thresholds. Then,I-PVO reversible information embedding was implemented for dynamically selected embedded sequences. The simulation results showed that the proposed algorithm had obvious improvement in embedding capacity and image distortion performance.
In order to reduce the influence of the obvious distortion of grayscale graphs with the increase of embedding capacity,an improved reversible data hiding algorithm based on sequence dynamic selection was proposed. The new algorithm was improved on the basis of pixel value ordering( PVO) and dynamic pixel block partition,and the possible embedded sequence in complex pixel blocks was selected during the dynamic classification by adaptive thresholds. Then,I-PVO reversible information embedding was implemented for dynamically selected embedded sequences. The simulation results showed that the proposed algorithm had obvious improvement in embedding capacity and image distortion performance.
引文
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[6] GUI X L,LI X L,YANG B. A high capacity reversible data hiding scheme based on generalized prediction-error expansion and adaptive embedding[J]. Signal processing,2014,98(5):370-380.
[7] PENG F,LI X L,YANG B. An adaptive PEE-based reversible data hiding scheme exploiting referential prediction-errors[C]∥IEEE International Conference on Multimedia and Expo. Turin,2015:1-6.
[8] OU B,LI X L,ZHAO Y,et al. Pairwise prediction-error expansion for efficient reversible data hiding.[J]. IEEE transactions on image processing,2013,22(12):5010-5021.
[9] LI X L,LI J,LI B,et al. High-fidelity reversible data hiding scheme based on pixel-value-ordering and prediction-error expansion[J]. Signal processing,2013,93(1):198-205.
[10] OU B,LI X L,ZHAO Y,et al. Reversible data hiding using invariant pixel-value-ordering and prediction-error expansion[J].Image communication,2014,29(7):760-772.
[11] PENG F,LI X L,YANG B. Improved PVO-based reversible data hiding[J]. Digital signal processing,2014,25(2):255-265.
[12] WANG X,DING J,PEI Q Q. A novel reversible image data hiding scheme based on pixel value ordering and dynamic pixel block partition[J]. Information sciences,2015,310:16-35.
[2] NI Z C,SHI Y Q,ANSARI N,et al. Reversible data hiding[J]. IEEE transactions on circuits and systems for video technology,2006,16(3):354-362.
[3] KHAN A,SIDDIQA A,MUNIB S,et al. A recent survey of reversible watermarking techniques[J]. Information sciences,2014,279:251-272.
[4] LI X L,ZHANG W M,GUI X L,et al. A novel reversible data hiding scheme based on two-dimensional difference-histogram modification[J]. IEEE transactions on information forensics and security,2013,8(7):1091-1100.
[5] WU H Z,WANG H X,SHI Y Q,et al. PPE-based reversible data hiding[C]∥Proceedings of the 4th ACM Workshop on Information Hiding and Multimedia Security. Vigo,2016:187-188.
[6] GUI X L,LI X L,YANG B. A high capacity reversible data hiding scheme based on generalized prediction-error expansion and adaptive embedding[J]. Signal processing,2014,98(5):370-380.
[7] PENG F,LI X L,YANG B. An adaptive PEE-based reversible data hiding scheme exploiting referential prediction-errors[C]∥IEEE International Conference on Multimedia and Expo. Turin,2015:1-6.
[8] OU B,LI X L,ZHAO Y,et al. Pairwise prediction-error expansion for efficient reversible data hiding.[J]. IEEE transactions on image processing,2013,22(12):5010-5021.
[9] LI X L,LI J,LI B,et al. High-fidelity reversible data hiding scheme based on pixel-value-ordering and prediction-error expansion[J]. Signal processing,2013,93(1):198-205.
[10] OU B,LI X L,ZHAO Y,et al. Reversible data hiding using invariant pixel-value-ordering and prediction-error expansion[J].Image communication,2014,29(7):760-772.
[11] PENG F,LI X L,YANG B. Improved PVO-based reversible data hiding[J]. Digital signal processing,2014,25(2):255-265.
[12] WANG X,DING J,PEI Q Q. A novel reversible image data hiding scheme based on pixel value ordering and dynamic pixel block partition[J]. Information sciences,2015,310:16-35.