Improved kpass pixel value ordering based data hiding
Improved k-pass pixel value ordering based data hiding Source: IEEE Access , March 2019 Authors: Shaowei Weng ; Yi Chen ; Bo Ou ; Chin-Chen Chang ; Chunyu Zhang Speaker :Hengxiao Chi Date : 2020/03/19 1
Outline • Related work • Proposed scheme • Experimental results • Conclusions 2
Related work- Peng et al. ’s IPVO (1/3) [24] F. Peng , X. Li , B. Yang , Improved pvo-based reversible data hiding, Digit. Signal Process. 25 (2014) 255– 265. 3 3
Related work-Peng et al. ’s IPVO (2/3) b: the to-be-embedded bit. 4 3
Related work-Peng et al. ’s IPVO (3/3) 110 112 113 114 5 3
Proposed scheme(1/8)-block complexity 6
Proposed scheme(2/8)-prediction error 7
Proposed scheme(3/8)-modification process 8
Proposed scheme(4/8)-modification process 9
Proposed scheme(5/8)-example 1 2 3 4 5 6 132 142 130 143 134 143 σ(1)=3 σ(2)=1 σ(3)=5 σ(4)=2 σ(5)=4 σ(6)=6 130 132 134 142 143 143 σ(4)=2 σ(5)=4 σ(6)=6 142 144 143 1 2 3 4 5 6 132 142 130 144 134 143 σ(1)=3 σ(2)=1 σ(3)=5 σ(4)=2 σ(5)=6 σ(6)=4 130 132 134 142 143 143 10
Proposed scheme(6/8)-example 1 2 3 4 5 6 132 142 130 143 134 142 1 2 3 4 5 6 132 141 130 143 134 141 σ(1)=3 σ(2)=1 σ(3)=5 σ(4)=2 σ(5)=6 σ(6)=4 130 132 134 142 143 130 132 134 141 143 σ(4)=2 σ(5)=6 σ(6)=4 142 142 144 141 144 σ(4)=2 σ(5)=6 σ(6)=4 141 142 141 144 143 141 143 11
Proposed scheme(7/8)-example 1 2 3 4 5 6 132 138 130 143 134 140 5 6 132 138 130 140 134 141 σ(1)=3 σ(2)=1 σ(3)=5 σ(4)=2 σ(5)=6 σ(6)=4 σ(1)=3 σ(2)=1 σ(3)=5 σ(4)=2 σ(5)=4 σ(6)=6 130 132 134 138 140 143 130 132 134 138 140 141 σ(4)=2 σ(5)=6 σ(6)=4 138 140 143 σ(4)=2 σ(5)=6 σ(6)=4 138 140 145 143 σ(4)=2 σ(5)=4 σ(6)=6 138 141 142 σ(4)=2 σ(5)=4 σ(6)=6 138 141 140 142 141 12
Proposed scheme(8/8)-example 1 130 2 138 3 130 4 143 5 131 6 140 σ(1)=1 σ(2)=3 σ(3)=5 σ(4)=2 σ(5)=6 σ(6)=4 130 131 σ(1)=1 σ(2)=3 σ(3)=5 130 131 138 140 143 1 130 2 138 3 129 4 143 5 131 6 140 σ(1)=3 σ(2)=1 σ(3)=5 σ(4)=2 σ(5)=6 σ(6)=4 129 130 131 138 140 143 σ(1)=3 σ(2)=1 σ(3)=5 129 130 131 σ(1)=1 σ(2)=3 σ(3)=5 130 129 131 σ(1)=3 σ(2)=1 σ(3)=5 130 131 13
Experimental results(1/5) 14
Experimental results(2/5) 15
Experimental results(3/5) 16
Experimental results(4/5) 17
Experimental results(5/5) 18
Conclusions • Improved k-pass PVO • Combine the unchanged pixels within a block with its neighbors to enhance the prediction accuracy in terms of local complexity. 19
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