摘要
H.264标准是当前图像标准中压缩效率最高的,其码流结构对网络有很强的适应性,在此标准下进行水印技术的研究对于网络视频传输过程中的版权保护有着重要的意义。为此,提出了一种通过调整H.264的CAVLC编码中DC系数来隐藏版权信息的视频水印算法,该算法在检测水印时不需要原始视频序列因而具有盲检测性,在应对反复压缩、加载噪声、帧平均等多种攻击时显示出较强的鲁棒性。与基于MPEG标准的视频水印算法做了性能对比,表明本算法具有一定的理论和工程应用价值。
H.264 standard has highest compressive efficiency in the current image standards. Its bit stream＇s structure appears strong adaptability to the network. Research of watermarking on this standard has important effects on copyright protection in the network video transmission. Consequently, a new video watermarking arithmetic which embeds watermarking by adjusting DC coefficients in the CAVLC encoding of H.264 is provided. The arithmetic doesn＇t need original video image when detecting watermarking so that it is a blind detection. Experiments indicate that arithmetic has a strong robustness to many attack schemes, such as multiple compression, noise attacks, frame averaging. At last, it appears much value on the theory and engineering by comparing its capabilities with MPEG.
出处
《工程图学学报》
CSCD
北大核心
2008年第6期96-100,共5页
Journal of Engineering Graphics
基金
国家自然科学基金资助项目(60474035)
安徽省"十五"二期科技攻关重大计划资助项目(040020382)
关键词
计算机应用
视频水印
DC系数
目标矩阵
盲检测
computer application
video watermarking
DC coefficient
target matrix
blind detection
