Reversible data hiding in H.264/AVC videos based on hybrid-dimensional histogram modification
Reversible data hiding in H.264/AVC videos based on hybrid-dimensional histogram modification
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DOI：
10.1007/s11042-022-12740-3
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发表时间：
2022-04
影响因子：
3.6
通讯作者：
Dawen Xu;Yong Liu
中科院分区：
文献类型：
--
作者：
Dawen Xu;Yong Liu
In this paper, a new reversible data hiding (RDH) scheme for H.264/AVC video based on hybrid histogram modification is proposed. Two nonzero quantized transform coefficients (QTCs) are combined to generate coefficient pairs. Unlike previous works, only small QTCs s are put into pairs to construct two-dimensional (2D) histogram, and the remaining coefficients are formed into one-dimensional (1D) histogram. Then a hybrid dimensional histogram modification is designed to embed data. An appropriate 2D modification is determined to modify the small QTCs in the pairwise manner. For the large QTCs, only the 1D shifting operation is performed on them for the sake of reversibility. Experimental results demonstrate that compared with the existing two methods, the average value of the maximum embedding capacity can be increased by 43.59% and 17.48% respectively. Furthermore, with the same embedding capacity, the proposed method can achieve better performance in terms of bit rate variation and visual quality.
