Optimal PPVObased reversible data hiding u Source Journal
Optimal PPVO-based reversible data hiding u. Source : Journal of Visual Communication and Image Representation, vol. 48, pp. 318 -328, Oct 2018 u. Authors : Shaowei Weng, Guohao. Zhang Jeng-Shyang Pan and Zhili. Zhou u. Speaker : Chia-Shuo Shih u. Date : 2018/05/24 1
Outline �Introduction ① Pixel Value Ordering(PVO) �Related work ◦ PPVO ◦ Histogram Pair Shifting (HPS) �Proposed method �Experimental results �Conclusions 2
Introduction --- Pixel Value Ordering (PVO) �PVO is a reversible data hiding method. ◦ high visual quality ◦ low embedding capacity [43] X. L. Li, J. Li, B. Yang, “High-fidelity reversible data hiding scheme based on pixel-value-ordering and prediction-error”, Signal Process, vol. 93, no. 1, pp: 198 - 3
Introduction --- Pixel Value Ordering (PVO) 15 26 25 17 14 27 25 17 4
![Related work- Pixel-based pixel value ordering(PPVO) 1 [48] X. C. Qu, H. J. Kim,](http://slidetodoc.com/presentation_image/a88c0a6b0def6f1611c1779d9cc4f9f7/image-5.jpg "Related work- Pixel-based pixel value ordering(PPVO) 1 [48] X. C. Qu, H. J. Kim,")
Related work- Pixel-based pixel value ordering(PPVO) 1 [48] X. C. Qu, H. J. Kim, “Pixel-based pixel value ordering predictor for high-fidelity reversible data”, Signal Process, vol. 111, pp: 249 -260, 2015. 5
Related work- Pixel-based pixel value ordering 2 6
Related work- Pixel-based pixel value 1 ordering 9 9 10 11 11 9 10 11 10 9 10 11 254 254 253 254 254 10 10 11 10 10 10 X’=min(9, 10, 11) X’=max(9, 10, 11) skip X’=254 Skip X’=10 Skip 7
Related work- Pixel-based pixel value ordering 2 9 9 10 11 11 9 10 11 10 9 10 11 254 254 253 254 254 10 10 11 10 10 10 X’=9 X”=x-b X’=11 X”=x-b skip X’=254 X”=x+b Skip X’=10 X“=x-b Skip 8
![Related work- histogram pair shifting (HPS) [50] X. Wang, J. Ding, Q. Q. Pei,](http://slidetodoc.com/presentation_image/a88c0a6b0def6f1611c1779d9cc4f9f7/image-9.jpg "Related work- histogram pair shifting (HPS) [50] X. Wang, J. Ding, Q. Q. Pei,")
Related work- histogram pair shifting (HPS) [50] X. Wang, J. Ding, Q. Q. Pei, “A novel reversible image data hiding scheme based on pixel value ordering and dynamic pixel block partition”, Inform. Sci, vol. 310, pp: 16 - 9
Related work- histogram pair shifting (HPS) 10
Related work- histogram pair shifting (HPS) MSE=27 MSE=19 11
Proposed method 12
Proposed method C 1 C 9 C 2 P C 3 C 7 C 5 C 4 C 6 C 12 C 10 C 8 C 11 C 13 P 13
Proposed method H 1(k, v. T 1) 14
Proposed method H 1(k, v. T 1) 15
Proposed method =0 162 162 162 161 162 163 162 161 162 162 162 161 16
Proposed method =0 129 130 118 103 122 133 125 102 106 124 111 112 103 128 133 122 134 125 102 106 124 111 112 103 128 133 17
Experimental results 18
Experimental results 19
Experimental results 20
Conclusions �flexible prediction pattern �the optimal-embedding-bin search scheme 21
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