An improved scheme for data hiding in encrypted H.264/AVC videos

Document Type

Article

Publication Date

4-1-2016

Abstract

Recently, a novel scheme to hide data into encrypted H.264/AVC videos using code-word substitution has been proposed by Xu et al. However, the statistical analysis of CAVLC code-words demonstrate that Xu et al.'s work does not fully exploit redundancy existing in CAVLC code-word for data embedding. In this paper, an improved version of Xu et al.'s data hiding method in encrypted H.264/AVC videos is proposed. Specifically, when suffixLength is equal to 1, data embedding is performed by paired code-word substitution. When suffixLength is greater than 2, not the single code-word substitution but the multiple-based notational system is adopted for data embedding. Experimental results have demonstrated that the improved method is indeed capable of providing a larger embedding capacity in comparison with Xu et al.'s method. Moreover, both encryption and data embedding can be accomplished without affecting the coding efficiency of H.264/AVC by keeping exactly the same bitrate.

Identifier

84969335467 (Scopus)

Publication Title

Journal of Visual Communication and Image Representation

External Full Text Location

https://doi.org/10.1016/j.jvcir.2016.02.002

e-ISSN

10959076

ISSN

10473203

First Page

229

Last Page

242

Volume

36

Grant

LY13F020013

Fund Ref

National Natural Science Foundation of China

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