A reversible and secure patient information hiding system for IoT driven e-health Source : International Journal of Information Management, Available online.

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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

Outline Introduction Proposed method Experimental results Conclusions 2

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

Proposed method 4

Proposed method-OPR Original image Cover image 5

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

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

Proposed method-data extraction Case7: 8

Proposed method-overflow/underflow OPR: 250 9

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

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

Experimental results 12

Experimental results 13 Image Scheme Capacity PSNR (dB) In bits In bpp Proposed 327680 1.25 43.8838 [47] 196608 0.75 46.3661 Image 2 43.9171 46.3725 Image 6 43.8909 46.3685 [40] (GA scheme) 38,700 0.15 49.011976 [40] (PSO scheme) 38,390 49.004725 [33] 36,060 0.14 48.946455 [27] 10,882 0.04 48.420868 Image 8 43.6007 46.3694 [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. 321-330 [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. 187-193 [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. 2515-2525, [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. 214-230 13

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

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