H.264码流下的数字视频水印算法探究  

Study on the digital video watermarking algorithm in H.264 streaming

作　　者：王伟[1] Wang Wei(Hainan College of Software Technology,Qionghai 571400,China)

机构地区：[1]海南软件职业技术学院,海南琼海571400

出　　处：《现代盐化工》2018年第1期47-48,共2页Modern Salt and Chemical Industry

摘　　要：鉴于近年来水印技术被大量运用到视频版权保护领域之中,文章提出一种H.264码流下的数字视频水印算法方案。依据经典的H&G算法之中部分解码的方法,运用视频纹理层面上的复杂度参数以及帧内预测趋向,在各宏块之中分别选取4×4块,依据DCT系数之特征,选取其中的一个中频系数嵌入到水印之中。结合目前最为常用的内置式水印嵌入法,可运用调制DCT系数之中的中频系数之奇偶性,从而实现水印之嵌入。在对实验结果进行测试后,可得出这一算法具备了H.264码流下可行性的结论。In view of the fact that watermarking technology has been widely used in the field of video copyright protection in recent years,a digital video watermarking algorithm scheme in H.264 code stream is proposed.Based on the partial decoding of classical H&G algorithm,4×4 blocks are selected among the macroblocks by using the complexity parameters at the video texture level and the intra prediction direction.According to the characteristics of DCT coefficients,one of them IF coefficients embedded in the watermark.Combined with the most commonly used built-in watermark embedding method,the parity of the IF coefficients in the modulated DCT coefficients can be used to embed the watermark.After testing the experimental results,we can conclude that this algorithm has the feasibility of H.264 stream.

关 键 词：H.264码流 数字视频 水印算法 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]