1. An efficient reversible data hiding with reduplicated exploiting modification direction using image interpolation and edge detection
Source： Multimedia Tools and Applications, 2017, 76(7):
Authors： Lee C F, Weng C Y, Chen K C
Speaker ：Xiaozhu Xie
Date ： /12/28

2. Outline Related work Exploiting Modification Direction (EMD)
reduplicated exploiting modification direction (REMD)
Proposed scheme
Experimental results
Conclusions
I would like to present in these five parts.

3. Related work--EMD(1/3) Extracting function: Secret data: 1000 1011… p28 7 9 4 79 54 55 11 20 21 12 24 10
Secret data: … p2
255 1 2 3 4 1 2 3 4 1 : : : : : : : : : : : : :
10002
1 35 … 11 2 3 4 1 2 3 4 1 2 3 2 … 10 1 2 3 4 1 2 3 4 1
Cover image … 9 3 4 1 2 3 4 1 2 3 4 3 … 8 1 2 3 4 1 2 3 4 1 2 1 … 7 4 1 2 3 4 1 2 3 4 4 … 6 2 3 4 1 2 3 4 1 2 3 2 … 5 1 2 3 4 1 2 3 4 1 7 10 4 … 4 3 4 1 2 3 4 1 2 3 4 3 … 3 1 2 3 4 1 2 3 4 1 2 1 … 2 4 1 2 3 4 1 2 3 4 4 … 1 2 3 4 1 2 3 4 1 2 3 2 … 1 2 3 4 1 2 3 4 1
Stego image 1 2 3 4 5 6 7 8 9 10 11 …
255 p1
Magic Matrix

4. Related work--EMD(2/3) p2 Stego image 1 35 p17 10 4
255 1 2 3 4 1 2 3 4 1 : : : : : : : : : : : : : … 11 2 3 4 1 2 3 4 1 2 3 2 … 10 1 2 3 4 1 2 3 4 1 … 9 3 4 1 2 3 4 1 2 3 4 3 … 8 1 2 3 4 1 2 3 4 1 2 1
Stego image … 7 4 1 2 3 4 1 2 3 4 4 … 6 2 3 4 1 2 3 4 1 2 3 2 … 5 1 2 3 4 1 2 3 4 1 … 4 3 4 1 2 3 4 1 2 3 4 3 … 3 1 2 3 4 1 2 3 4 1 2 1 … 2 4 1 2 3 4 1 2 3 4 4
1 35 … 1 2 3 4 1 2 3 4 1 2 3 2 … 1 2 3 4 1 2 3 4 1 p1 1 2 3 4 5 6 7 8 9 10 11 …
255
Extracted secret data: 10002
Magic Matrix

5. Related work-- REMD(3/3)
P=(16,15,15)
𝐺 1 =(8,7,7), I=(0,1,1)
𝐹 1 =1
𝑆 1 =1
𝐺 1 ′ =(8,7,7), I=(0,1,1)
𝐹 2 =1
𝑆 2 =4
𝐺 1 " =(8,7,8), 𝐼 ′ =(0,0,1)
Lee C F, Chuang L Y, Chang C C. Hiding information employing reduplicating embedding[C]//Asia-Pacific Services Computing Conference, APSCC'08. IEEE. IEEE, 2008: 4

6. Proposed scheme(1/3)- flow chart

7. Proposed scheme(2/3)- image interpolation phase

8. Proposed scheme(3/3)- embedding phase
(159,185,188)
G=(79,92,94), I=(1,1,0)
Record edge information
G=(77,92,94), I=(1,1,0)
Embed data 𝑆 1 : 0 01
G(1)=(77,92,95), I=(1,1,0)
Embed data 𝑆 2 : 6
Stego-Image
(152,185,191)
G(2)=(76,92,95), I’=(0,1,1)

9. Experimental results (1/8)

10. Experimental results (2/8)
10. Lee CF, Chuang LY, Chang CC (2008) Hiding information employing reduplicating embedding. Proceedings of 2008 I.E. Asia-Pacific Services Computing Conference:825–828

11. Experimental results (3/8)

12. Experimental results (4/8)

13. Experimental results (5/8)

14. Experimental results (6/8)

15. Experimental results (7/8)

16. Experimental results (8/8)

17. Conclusions Image interpolation is adopted to achieve reversibility.
Allowing flexible adjustment on data amount.

18. Thank you!