Security of MVD-based 3D video in 3D-HEVC using data hiding and encryption

Security of MVD-based 3D video in 3D-HEVC using data hiding and encryption
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使用数据隐藏和加密的 3D-HEVC 中基于 MVD 的 3D 视频的安全性

DOI:
10.1007/s11554-018-0817-5
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发表时间:
2018-09
影响因子:
3
通讯作者:
姜求平
姜求平
中科院分区:
计算机科学4区
文献类型:
--
作者:
骆挺;左力文;蒋刚毅;高巍;徐海勇;姜求平

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为了安全传输秘密数据并保护三维(3D)视频,提出了一种新颖的多视点视频和基于深度的3D视频的联合数据隐藏和加密方法。数据隐藏和加密都是为了满足实时性要求的3D高效视频编码(3D-HEVC)的格式要求。由于深度图不用于观看而是用于渲染虚拟视图,因此它用于通过调制最大编码单元(LCU)块的量化参数值来嵌入数据。根据深度图的边缘信息和彩色视频的纹理,将深度图的LCU块分为四种类型。考虑到渲染的虚拟视图的质量和稳定的比特率,不同类型的 LCU 块允许不同的嵌入强度。此外,彩色视频使用码字替换进行加密,以实现 3D-HEVC 格式合规性,而无需更改比特率。实验结果表明,该方法在嵌入数据后保持了虚拟视图的良好质量,有效保护了视频内容,并且对码率影响有限。
To safely transmit secret data and protect three-dimensional (3D) videos, a novel jointly data hiding and encryption method for multi-view video plus depth based 3D video is proposed. Both data hiding and encryption are all format complaint for the 3D high-efficiency video coding (3D-HEVC), which obtains a real-time requirement. Since the depth map is not used for viewing but for rendering the virtual view, it is used to embed data by modulating the quantization parameter value of the largest encoding unit (LCU) block. According to the edge information of the depth map and the texture of the colour video, LCU blocks of the depth map are classified into four types. Different types of LCU blocks allow different embedding strength considering the quality of the rendered virtual view and the stable bitrate. Moreover, the colour video is encrypted using codeword substitution for 3D-HEVC format compliance without changing the bitrate. Experimental results demonstrate that the proposed method keeps the good quality of the virtual view after embedding data, protects the video contents efficiently, and has a limited influence on the bitrate.
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