基于帧间中频能量关系的自适应视频水印算法  

An Adaptive Video Watermarking Scheme Based on the Middle-Frequency Energy Relationship Between Adjacent Frames

作　　者：杨列森[1] 郭宗明[1] 

机构地区：[1]北京大学 计算机科学技术研究所

出　　处：《软件学报》2007年第11期2863-2870,共8页Journal of Software

基　　金：No.20060101Z3006(国家高技术研究发展计划(863));No.2006BAH02A10(国家科技支撑计划课题)~~

摘　　要：通过分析发现了视频帧问中频能量关系对于光度失真和空间同步失真的近似不变性.基于这种近似不变性,提出了一种可以根据人类的视觉系统特性,自适应地调整嵌入强度的鲁棒视频水印算法.实验表明,该算法可以有效抵抗光度失真、空间同步失真及其组合失真.The approximate invariance of the middle frequencies energy relationship between video adjacent frames under photometric distortion and spatial desynchronization is discovered by analysis, Based on this approximate invariance, a new robust video watermarking scheme is proposed, It can adjust embedding strength adaptively according to human visual system features, Experimental results show that the proposed scheme is resilient to photometric distortion, spatial desynchronization and combined distortion effectively.

关 键 词：近似不变性 自适应视频水印 鲁棒 光度失真 空间同步失真 几何失真 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]