Title :
An ROI Privacy Protection Scheme for H.264 Video Based on FMO and Chaos
Author :
Fei Peng ; Xiao-wen Zhu ; Min Long
Author_Institution :
Sch. of Inf. Sci. & Eng., Hunan Univ., Changsha, China
Abstract :
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.
Keywords :
closed circuit television; cryptography; video coding; FMO technology; H.264 video; ROI privacy protection scheme; chaos; closed circuit television; coding performance; criminal activities; encryption efficiency; flexible macroblock ordering; human face regions; region of interest; security; selective video encryption; terrorist; Chaos; Encryption; Face; Image color analysis; Privacy; CCTV; FMO; H.264 coding; ROI; chaotic encryption; privacy protection;
Journal_Title :
Information Forensics and Security, IEEE Transactions on
DOI :
10.1109/TIFS.2013.2259819