一种自适应的DWT域数字视频水印算法  

An Adaptive Video Watermarking Algorithm in Wavelet Domain

作　　者：张芙蓉[1,2] 汤泽军[1] 

机构地区：[1]长沙航空职业技术学院,湖南长沙410124 [2]中南大学信息科学与工程学院,湖南长沙410083

出　　处：《长沙航空职业技术学院学报》2009年第3期71-75,共5页Journal of Changsha Aeronautical Vocational and Technical College

摘　　要：提出一种基于小波变换域的自适应视频水印算法。算法先对视频信息进行场景分割,然后从各场景中选取待插入水印的帧序列,对各帧图象进行3D-DWT,并对低频子带进行小波块的划分,据小波块的分类结果自适应地调整嵌入水印的强度。This article proposed a new adaptive video watermarking algorithm based on the DWT. This algorithm first divided the video information into different scenes, then selected valid frame sequence from various scenes to insert watermark . After 3 D digital wavelet transformation of every frame image, and it also divided the low frequency into wavelet blocks. Finally, intensity to insert watermark was adaptively adjusted according to the wavelet blocks＇classification result.

关 键 词：版权保护 数字水印 视频水印 DWT 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]