An H.264/AVC Video Watermarking Scheme in VLC Domain for Content Authentication  

作　　者：Sun Tanfeng Jiang Xinghao Lin Zhigao Zhou Yue Lu Huan Wang Shilin 

机构地区：[1]School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240 P. R. China [2]Shanghai Information Security Management and Technology Research Key Lab, Shanghai, P. R. China

出　　处：《China Communications》2010年第6期30-36,共7页中国通信（英文版）

基　　金：This paper is sponsored by the National Natural Science Foundation of China （No. 60802057, 61071153）, National 863 Plan of China （ 2009AA01Z407 ）, Shanghai Rising-Star Program （10QA1403700）, and Shanghai Educational Development Foundation.

摘　　要：A semi-fragile content authentication algorithm is proposed for low bit-rate H.264/AVC video in VLC domain. Utilizing the intra prediction mode and coded block pattern in VLC domain, the proposed algorithm chooses those macro-blocks from which the signature is extracted and constructs content signature at macro-block level according to the relationship among the energies of quantized low-frequency coefficients of sub-macroblocks. The signature is embedded by modifying the trailing coefficients. The experimental results show that the proposed algorithm performs well in visual quality impact and keep the bit-rate basically unchanged. In addition, the algorithm can embed signatures into I, P, B slices simultaneously and remarkably enhances the watermark capacity. By verifying the extracted signature, the algorithm can detect and locate video tampering efficiently.

关 键 词：H.264/AVC video watermarking content authentication VLC domain semi-fragile watermarking 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TN919.81[自动化与计算机技术—计算机科学与技术]