半脆弱数字水印技术在MPEG中的应用  

The Application of Semi-fragile Digital Watermark Technology in the MPEG

作　　者：王磊[1] 王道宪[1] 段晓辉[1] 

机构地区：[1]北京大学电子学系,北京100871

出　　处：《中山大学学报（自然科学版）》2004年第A02期169-171,175,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

摘　　要：在MPEG＿2标准视频编解码协议的基础上,将静态图像水印的一些算法移植到视频水印中,做到了既可以抵抗数字产品在传输过程中的失真、一些常见的图像 视频处理过程,同时又可以检测到一些恶意的攻击、篡改等。同时提出了一套针对MPEG视频协议的半脆弱数字水印认证算法。Based on the MPEG_2 video coding standard, some watermark arithmetics used in static image process are introduced to the video watermarking. And the goal is achieved that not tampering with the video quality at the same time of according with the MPEG_2 coding standard, and being tolerant of the transmission distortion and normal image/video processes as well as detecting some intended attacks and sophistication. In addition a digital watermark authentication arithmetic aimed at the MPEG standard is proposed.

关 键 词：半脆弱数字水印 MPEG 多媒体认证 Gray编码 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]