一种基于三维小波变换的鲁棒视频水印方案  

Robust Video Watermarking Based on Three Dimensional Discrete Wavelet Transform

作　　者：岳占峰 YUE Zhan-feng （Oriental Yonghe Intemational Copyright Exchange Center, Beijing 100012, China）

机构地区：北京东方雍和国际版权交易中心,北京100012

出　　处：《电脑知识与技术》2016年第10期196-200,共5页Computer Knowledge and Technology

基　　金：国家科技支撑计划支持,课题名称“作品流通与数字版权保护系统研发及应用示范”,课题编号2014BAH19F00.

摘　　要：本文的主要工作是提出一种新颖的三维小波域视频水印.首先,对目标视频进行三维小波变换,并在小波域内估计视频运动和纹理信息,以此为基础提取一组视频关键帧.然后,利用码分多址和乘性调制技术,将水印信息嵌入在视频关键帧的三维小波域内.为了提升水印检测性能,利用三维小波系数的统计特性对局部最优检测器进行优化,并利用它提取水印信息.实验表明,本文方案在水印不可感知性和鲁棒性两方面都获得了良好的性能.This paper presents a video watermarking method in three dimensional discrete wavelet transform （3D DWT）. In this method, the target video first undergoes the 3D DWT, and in the DWT domain, a set of key frames are extracted based on the motion and texture information of video. Then, with code divisionmultiple access （CDMA） and Multiplicative modulation tech- niques, watermark messages are embedded into the 3D DWT domain of the extracted key video frames. In order to improve the detection performance, a locally optimum detector is applied for watermark extraction, which is altered according to the proper- ties of 3D DWT. The experimental results show that the presented video watermarking scheme achieves the good performance both in invisibility and robustness.

关 键 词：数字水印 二值文本图像 双域 鲁棒性 打印-扫描 

分 类 号：TP393[自动化与计算机技术—计算机应用技术;自动化与计算机技术—计算机科学与技术]