Abstract
In order to resolve the problem that the existed H.264-based video encryption algorithms cannot obtain the tradeoff between security and encryption efficiency,two encryption algorithms are proposed based on the regions of interest in H.264 video.These algorithms combine extraction of region of interest with entropy encoding algorithm and only encrypt the extracted region of interest macroblock.A face-detection encryption algorithm is put forward,in which the mode selection algorithm is modified so that the inter macroblock prediction type of face region's referring to non-face region is eliminated.Another algorithm extracts motive object and encrypts macroblocks which belong to motive object during encoding procedure.Experimental results demonstrate that the two proposed algorithms can obtain a good tradeoff between security and efficiency and can meet the need of real-time applications.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call