A reversible data hiding scheme based on 5
A reversible data hiding scheme based on (5, 3) Hamming code using extra information on overlapped pixel blocks of grayscale images Source: Multimedia Tools and Applications, 13 January 2021 Author: Nguyen, Tuan Duc, and Huu Dung Le Speaker: Xu shuying Date: 2021 -03 -25
Outline • Introduction • Related works • Proposed scheme • Experiments • Conclusions 2
Introduction Original image Stego image Secret message: 1010110……. Hiding Reversible Extracted Secret message: 1010110……. 3
Related Work(1/3)—(7, 4) Hamming code-Encoding Encoded data d 1 d 2 d 3 d 4 Data: 1 1 0 1 Encoding Data(CW) : r 1 r 2 d 1 r 3 d 2 d 3 d 4 1 0 1 0 1 4
Related Work(2/3)—(7, 4) Hamming code-Error correcting Error data: 1010111 Received data(RCW): 1010101 RCW: Corrected data: 1010101 RCW: Correct 5
Related Work(3/3)—(7, 4) Hamming code-Error correcting Error data: 1010111 Received data(RCW): 1010101 z ei 001 010 011 100 101 110 Corrected data: 1010101 111 1000000 0100000 0010000 0001000 0000100 0000010 0000001 6
Proposed scheme(1/10)—Data hiding method based on (5, 3) Hamming code 7
Proposed scheme(2/10)—Data hiding method based on (5, 3) Hamming code 8
Proposed scheme(3/10)—Data hiding method based on (5, 3) Hamming code 9
Proposed scheme(5/10)— Extraction 10
Experiments(1/6)--- The maximum embedding payload 11
Experiments(2/6) 12
Experiments(3/6) Distributed available embedding capacity 13
Conclusions • In this paper, the presented reversible data hiding that not only can obtain a high embedding capacity but also can maintain the appreciable visual quality by employing overlapped pixel blocks and the adjusted (5, 3) Hamming codebased method to conceal secret message bits. 14
Thanks! 15
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