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) 12-13 Authors: Bo Ou, Xiaolong Li ,Jinwei Wang , Gangqiang Xiong Speaker: Tzu-Meng Wang Date: 6/28/2018
Outline Related Works Proposed Scheme Experiment Results Conclusion 2
Related Work(1/3) PVO (pixel value oredering) 14 29 28 16 13 30 28 16
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 < 0 (e1max,e2max) -> (e1max, e2max+1) if emax > 1 (e1max,e2max) -> (e1max+1,e2max)
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 < 0 (e1max,e2max) -> (e1max, e2max+1) if emax > 1 (e1max,e2max) -> (e1max+1,e2max)
Proposed Method(1/3) e= (0,0) -> (0,0), (0,1)
Proposed Method(2/3) if sb = ...10…. occurs when (e1max ,e2max) = (1,1)
Proposed Method(3/3) 165 164 162 166 159 161 160 165 164 162 167 159 158 161 160
Experiment Result(1/4)
Experiment Result(2/4)
Experiment Result(3/4)
Experiment Result(4/4)
Conclusion Improve PSNR and Capacity