An ROI Privacy Protection Scheme for H.264 Video Based on FMO and Chaos
An ROI Privacy Protection Scheme for H.264 Video Based on FMO and Chaos
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DOI：
10.1109/tifs.2013.2259819
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发表时间：
2013-10
影响因子：
6.8
通讯作者：
Fei Peng;Xiao-wen Zhu;Min Long
中科院分区：
文献类型：
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作者：
Fei Peng;Xiao-wen Zhu;Min Long
随着恐怖和犯罪活动的增多，闭路电视在许多场合得到了广泛的应用。然而，监控视频的滥用可能会导致个人隐私的泄露。为了保护CCTV视频的隐私，提出了一种基于柔性宏块排序（FMO）和混沌的H.264视频感兴趣区域（ROI）加密方案，并以人脸区域为例进行感兴趣区域加密。首先，对视频中的人脸区域进行检测和提取；然后，利用H.264中的FMO技术将它们映射到切片组中。然后，使用基于混沌的选择性视频加密对这些区域进行加密。实验结果和分析表明，该方案能够有效地保护H.264视频的隐私信息，从而在安全性、加密效率和编码性能之间取得良好的平衡。它在CCTV视频的隐私保护中具有很大的应用潜力。
With the increase of terrorist and criminal activities, closed circuit television (CCTV) is widely used on many occasions. However, abuse of surveillance video may result in the leakage of personal privacy. To protect the privacy in the video of CCTV, an encryption scheme for region of interest (ROI) of H.264 video based on flexible macroblock ordering (FMO) and chaos is proposed in this paper, where human face regions are selected as an example of ROI. First, the human face regions in the video are detected and extracted. Then, they are mapped into slice groups by using FMO technology in H.264. After that, these regions are encrypted using selective video encryption based on chaos. Experimental results and analysis show that the proposed scheme can effectively protect the private information of H.264 video and, therefore, can strike a good balance among the security, encryption efficiency, and coding performance. It has great potential to be used in the privacy protection of the video of CCTV.