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Skewed Histogram Shifting for Reversible Data Hiding using a Pair of Extreme Predictions Source: IEEE Transactions on Circuits and Systems for Video Technology(

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Presentation on theme: "Skewed Histogram Shifting for Reversible Data Hiding using a Pair of Extreme Predictions Source: IEEE Transactions on Circuits and Systems for Video Technology("— Presentation transcript:

1 Skewed Histogram Shifting for Reversible Data Hiding using a Pair of Extreme Predictions
Source: IEEE Transactions on Circuits and Systems for Video Technology( Early Access ) Authors: Suah Kim, Xiaochao Qu, Vasily Sachnev, Hyoung Joong Kim Speaker: Tzu-Meng Wang Date: /20/2018

2 bi: the bit to embed (0 or 1)
Related Work(1/3) histogram shifting fR (200) fL (85) two peaks: fL and fR bi: the bit to embed (0 or 1)

3 Related Work(2/3) histogram bin expansion b = 1 0 1 0 1 0
histogram shifting histogram bin expansion b = 2 4 85 95 73 94 193 200 253 207 189 251 1 3 85 95 72 94 193 200 254 208 189 252 1 3 84 95 85 72 94 193 200 254 201 208 189 252

4 Related Work(3/3) Image recovery extracted bin values
histogram shifting Image recovery extracted bin values 1 3 84 95 85 72 94 193 200 254 201 208 189 252 2 4 84 95 85 73 94 193 200 253 201 207 189 251 2 4 85 (1) 95 (0) 73 94 193 200 253 207 189 251

5 Preliminary-- Skewed Histogram(1/2)

6 Preliminary-- Skewed Histogram(2/2)
120 115 127 113 130 secret bit: 01 traditional histogram shifting left skewed histogram shifting 119 120 114 127 112 131 120 115 127 113 131 120 115 127 128 113 132

7 Proposed Method(1/10)

8 Proposed Method(2/10) PHS(positive histogram shifting)
NHS(negative histogram shifting)

9 Proposed Method(3/10) NHS PHS 77 125 127 126 123 77 125 127 126 123
128 125 127 126 124 123

10 Proposed Method(4/10) Extraction PHS(positive histogram shifting)
NHS(negative histogram shifting)

11 Proposed Method(5/10) 77 125 127 126 124 123 77 125 127 126 123 124 77 125 127 126 123 124

12 Proposed Method(5/10)

13 Proposed Method(6/10) 77 125 127 126 123 124 81 123 127 124 125 122 =10 =6

14 Experiment Results(1/2)

15 Experiment Results(2/2)

16 Conclusion A novel way to do histogram shifting Increases PSNR


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