Complete video quality-preserving reversible data-hiding based on AVS
完全质量保持的AVS视频可逆信息隐藏算法

Reversible data hiding has extensive applications in fields like medical data management and forensic material authentication.A new reversible data hiding algorithm using AVS video as cover is proposed in this paper.The secret information is embedded into the cover video by simultaneously modifying quantization parameter and quantized DCT coefficients of a macroblock.The original cover video can be completely recovered after the secret information is extracted,and moreover,the data embedding process brings no visual distortion to the cover video.In order to restrain the video bitrate increment caused by this algorithm,an improved reverse zerorun length(IRZL) coding strategy is applied.The experiment results indicate that the new strategy is quite effective in restraining bitrate increment.Under situation that embedding rate is large enough,IRZL coding is more effective than original reverse zero run length(RZL).