High capacity reversible data hiding in encrypted images
High capacity reversible data hiding in encrypted images using SIBRW and GCC Source: Journal of Visual Communication and Image Representation, 2020 Authors: Shaowei Weng, Caiying Zhang, Tiancong Zhang, Kaimeng Chen Speaker: Wang Xu Date: 2021/01/14
Outline • Introduction • Proposed scheme • Experiment results • Conclusions
Introduction (1/2) Encrypted secret data Data hider Secret data Content owner Original image Encrypted image Reserve room before image encryption (RRBE) Embedded, encrypted image Vacate room after image encryption (VRAE) 3
Introduction (2/2) Decrypted image Secret data Embedded, encrypted image Secret data Original image 4
Related work (1/3) 5
Related work (2/3) [33] K. M. Chen, C. C. Chang, High-capacity reversible data hiding in encrypted images based on extended runlength coding and block-based msb plane rearrangement, Journal of Visual Communication and Image Representation 58 (2019) 334– 344. 6
Related work (3/3) 7
Proposed scheme 8
Proposed scheme – SIBRW (sixteen image-based rearrangement ways) 9
Proposed scheme – GCC (group classification encoding) 10
Proposed scheme (A) 00 00 0000 1111 0000 1111 (B) 32 (0): 11110 00000 0 28 (1): 1110 1100 1 0111: 0 0111 (C) 32 (0): 110 0 0 16 (1): 10 1 1… 0: 011 0 1111 (D) 32 (0): 11110 00000 0 31 (1): 1110 1111 1 0: 00 11
Proposed scheme – Vacating room 8 7 6 5 4 Self-embedding 3 2 1 12
Experiment results (1/6) 13
Experiment results (2/6) 14
Experiment results (3/6) 15
Experiment results (4/6) [28] C. Qin, X. K. Qian, W. Hong, X. P. Zhang, An efficient coding scheme for reversible data hiding in encrypted image with redundancy transfer, Information Sciences 487 (2019) 176– 192. [29] M. Li, D. Xiao, Y. S. Zhang, N. Hai, Reversible data hiding in encrypted images using cross division and additive homomorphism, Sign. Process. Image Commun 39 (2015) 234– 248. [32] S. Yi, Y. C. Zhou, Binary-block embedding for reversible data hiding in encrypted images, Signal Processing 133 (2017) 40– 51. [33] K. M. Chen, C. C. Chang, High-capacity reversible data hiding in encrypted images based on extended run-length coding and block-based msb plane rearrangement, Journal of Visual Communication and Image Representation 58 (2019) 334– 344. 16
Experiment results (5/6) 17
Experiment results (6/6) 18
Conclusions Ø SIBRW can bring together highly-correlated bits to rearrange each MSB plane. Ø GCC can effectively compress each rearranged bitstream. 19
- Slides: 19