1. High-fidelity reversible data hiding based on pixel-value-ordering and pairwise prediction-error expansion
Source: Journal of Visual Communication and Image Representation 39 (2016)
Authors: Bo Ou, Xiaolong Li ,Jinwei Wang , Gangqiang Xiong
Speaker: Tzu-Meng Wang
Date: 6/28/2018

2. Outline Related Works Proposed Scheme Experiment Results Conclusion 2

3. Related Work(1/3)
PVO (pixel value oredering) 14 29 28 16 13 30 28 16

4. Related Work(2/3)
2D PVO
if emax = 0 (e1max ,e2max) -> (e1max ,e2max) , (e1max ,e2max+1)
if emax = 1 (e1max,e2max) -> (e1max , e2max) , (e1max+1 , e2max)
if emax < (e1max,e2max) -> (e1max, e2max+1)
if emax > 1 (e1max,e2max) -> (e1max+1,e2max)

5. Related Work(3/3) 2D PVO 130 123 131 124 sb=1 130 123 132 124
if emax = 0 (e1max ,e2max) -> (e1max ,e2max) , (e1max ,e2max+1)
if emax = 1 (e1max,e2max) -> (e1max , e2max) , (e1max+1 , e2max)
if emax < (e1max,e2max) -> (e1max, e2max+1)
if emax > 1 (e1max,e2max) -> (e1max+1,e2max)

6. Proposed Method(1/3) e= (0,0) -> (0,0), (0,1)

7. Proposed Method(2/3) if sb = ...10…. occurs
when (e1max ,e2max) = (1,1)

8. Proposed Method(3/3)
165
164
162
166
159
161
160
165
164
162
167
159
158
161
160

9. Experiment Result(1/4)

10. Experiment Result(2/4)

11. Experiment Result(3/4)

12. Experiment Result(4/4)

13. Conclusion
Improve PSNR and Capacity