Fast semi-fragile watermarking algorithm for H.264/AVC
Keji Wang · Jisuanji yingyong yanjiu · 2010
This paper proposed a real-time semi-fragile watermark algorithm based on H.264/AVC low bit-rate video stream,could achieve jointly copyright protection and content authentication by embedding the robust watermark and fragile watermark.This paper introduced I-frame block's energy E as a condition to embed robust watermark,and it could enhance robustness and transparency of the watermark.Embedded fragile watermark through restrict the range and the precision of the P-frame motion vector estimation.Experimental results show the algorithm has lower complexity and better rate-distortion characteristic.It can meet the needs of real-time processing of video.