High Capacity HEVC Video Hiding Algorithm Based on EMD Coded PU Partition Modes
High Capacity HEVC Video Hiding Algorithm Based on EMD Coded PU Partition Modes
复制标题
基于EMD编码PU分区模式的大容量HEVC视频隐藏算法
DOI：
10.3390/sym11081015
复制
发表时间：
2019
期刊：
影响因子：
2.7
通讯作者：
Li Zhaohong
中科院分区：
文献类型：
--
作者：
Li Zhonghao;Meng Laijin;Jiang Xinghao;Li Zhaohong
视频中的数据隐藏一直是一个很大的问题，因为它们丰富的冗余可以用来嵌入大量的秘密信息。此外，由于高效率视频编码（HEVC）与先前的标准H. 264相比引入了许多创新技术，因此它已逐渐成为主流。因此，利用HEVC的新特性开发新的信息隐藏算法是有价值的。提出了一种基于帧间预测单元划分模式的HEVC视频数据隐藏算法。首先选择8 × 8和16 × 16两种大小的编码单元（CU）进行嵌入，然后对这些CU中的PU分区模式进行空间编码。在此基础上，分别提出了在编码单元为8 × 8和16 × 16的情况下修改编码单元划分模式的两种具体隐藏算法。实验结果表明，该算法在不同量化参数压缩的高分辨率和低分辨率视频中均具有良好的视觉质量、高嵌入容量和低比特率增长。与现有算法相比，该算法在保持较高视觉质量的同时，在码率增加不大的情况下，获得了更高的容量。
Data hiding in videos has been a big concern as their rich redundancy can be used for embedding a lot of secret information. Further, as high efficiency video coding (HEVC) introduces many innovative technologies compared with the previous standard, H.264, it has gradually become the mainstream. Therefore, it is valuable to develop new information hiding algorithms by using novel features of HEVC. A HEVC video data hiding algorithm based on prediction unit (PU) partition modes from inter prediction process is proposed in this paper. Firstly, code units (CUs) in two sizes of 8 × 8 and 16 × 16 are selected for embedding, then the PU partition modes in these CUs are coded by a spatial coding method. After that, two specific hiding algorithms by modifying coded PU partition modes in CUs of 8 × 8 and 16 × 16 are proposed, respectively. Experimental results show that the proposed algorithm has achieved excellent performance with high visual quality, and high embedding capacity and low bitrate increase in both high- and low-resolution videos compressed with different quantization parameters (QPs). Compared with the state-of-the-art work, the proposed algorithm achieves a much higher capacity while keeping quite high visual quality with little increase of bitrate.