Efficient Face Protection of H.264 Video in the CABAC Domain
This work was supported in part by the National Natural Science Foundation of China under Grant 60474035, in part by the Anhui Provincial Natural Science Foundation of China under Grant 070412035.
Recently, several video encryption algorithms have been proposed, which are applied to H.264 compressed bitstreams. Although these algorithms offer many desired advantages compared to conventional ones, they do not consider regions of interest. These regions may need better protection, may be the only regions that need protection, depending on the specific application. In this work an effective face protection scheme including state-of-the-art face detection methods and novel simultaneous CABAC and residual coefficients (RCs) encryption is presented, with an emphasis on encryption aspect. The goal is to identify and encrypt regions corresponding to human faces in a video sequence. Simulation results demonstrate the effectiveness of the proposed scheme.
