1. A reversible and secure patient information hiding system for IoT driven e-health
Source : International Journal of Information Management, Available online 11, October 2018
Authors : Javaid A.Kaw, Nazir A.Loan, Shabir A.Parah, K.Muhammad, Javaid A.Sheikh and G.M.Bhatc
Speaker : Chia-Shuo Shih
Date : 2018/11/08 1

2. Outline Introduction Proposed method Experimental results Conclusions2

3. Introduction data hiding 3 Electronic Patient Record(EPR)
medical images  3

4. Proposed method 4

5. Proposed method-OPR
Original image
Cover image 5

6. Proposed method 6 Secret data: [1 0 0 1 1 1 0 1 0 0 0…] 110 111 109
112
OPR
110
Original image
cover image block
110
111
109
112
110
112
109
111
PPB
cover image block
Pixel permuted block 6

7. Proposed method 7 Secret data: [1 0 0 1 1 1 0 1 0 0 0…] 110 111 109
112
110
112
109
111
112
109
111
Secret data: 1
cover image block
Pixel permuted block
Stego block
125
126
124
127
125
126
124
127
125
126
124
Secret data: 0
cover image block
Stego block
Pixel permuted block 7

8. Proposed method-data extraction
Case7: 8

9. Proposed method-overflow/underflow
OPR:
250 9

10. Proposed method-overflow/underflow
data extraction:
S(1,1) = 0
S(1,1) = 5
S(1,1) = 249 10

11. Proposed method-overflow/underflow
data extraction:
S(1,1) = 250
S(1,1) = 254
S(1,1) = 255 11

12. Experimental results 12

13. Experimental results 13 Image Scheme Capacity PSNR (dB) In bits In bpp
Proposed
327680
1.25
[47]
196608
0.75
Image 2
Image 6
[40] (GA scheme)
38,700
0.15
[40] (PSO scheme)
38,390
[33]
36,060
0.14
[27]
10,882
0.04
Image 8
[40[ (PSO scheme)
[27]S. Lee, C.D. Yoo, T.O.N. Kalker. “Reversible image watermarking based on integer-to-integer wavelet transform”, IEEE Transactions on Information Forensics and Security, 2 (2007), pp
[33]L. Luo, Z. Chen, M. Chen, X. Zeng, Z. Xiong, “Reversible image watermarking using interpolation technique”, IEEE Transactions on Information Forensics and Security, 5 (1) (2010), pp
[40] T. Naheed, I. Usman, T.M. Khan, A.H. Dar, M.F. Shafique, “Intelligent reversible watermarking technique in medical images using GA and PSO”, Optik - International Journal for Light and Electron Optics, 125 (11) (2014), pp.  , 
[47] S.A. Parah, F. Ahad, J.A. Sheikh, G.M. Bhat, “Hiding clinical information in medical images: A new high capacity and reversible data hiding technique”, Journal of Biomedical Informatics, 66 (2017), pp 13

14. Conclusions High embedding capacity of about 1.25 bpp is achieved.
Blind data extraction. 14

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