摘要
视频数字水印技术是当前水印研究中的一个热点。为了更好的保证视频水印的鲁棒性,提出了一种基于MPEG-2运动分量的自适应数字水印算法。该算法首先利用矩阵置乱来确定水印片段的目标图像组,然后结合人眼视觉系统选择水印比特嵌入的运动分量。实验结果表明,该算法不仅对于针对视频水印的特殊攻击具有高鲁棒性,且水印嵌入前后图像的峰值信噪比仅有微弱差异。
Digital watermarking technology of video image is a hot topic in present watermarking researching area. In this paper, a adaptive video watermarking scheme based on MPEG-2 motion vectors is proposed, using matrix scrambling computing target group of pictures for watermark clip, combided human visual system, chosing target component motion for watermarks bit. Experimental show that it is robust to special video watermarks attack, and has faintness influence on the visual effect of pictures.
出处
《中国图象图形学报》
CSCD
北大核心
2005年第11期1471-1475,共5页
Journal of Image and Graphics
关键词
视频水印
运动分量
矩阵置乱
图像组
video watermarking, component motion, matrix scrambling, group of pictures
