基于整数小波变换的彩色视频水印算法  

Color Video Watermarking Algorithm Based on Integer Wavelet Transform

作　　者：熊祥光[1] 王力[2] 瞿云云[1] 

机构地区：[1]贵州师范大学数学与计算机科学学院,贵州贵阳550001 [2]贵州大学计算机科学与信息学院,贵州贵阳550025

出　　处：《微电子学与计算机》2013年第4期41-45,共5页Microelectronics & Computer

基　　金：国家自然科学基金项目(61065010);贵州省科技厅;贵州师范大学联合科技基金(LKS[2011]15号)

摘　　要：提出了一种基于整数小波变换的视频水印技术.算法首先对水印进行混沌加密和Arnold置乱处理和借助密钥选取r帧视频;其次对选取视频帧的每一通道进行互不重叠的8×8分块和对选取的每一分块进行1级整数小波变换;最后根据视觉掩蔽特性来自适应调整两相邻块对应高频子带均值之间的大小关系以嵌入水印.实验表明,该算法实现简单,具有较好的透明性和鲁棒性.A video watermarking algorithm based on integer wavelet transform （IWT） is proposed. Firstly, the watermarking is preproeessed by using chaotic encryption and Arnold scrambling. Secondly, select randomly r frames from a given video with a key and each channel of selected frames is subdivided to non--overlapping blocks of size 8 × 8 and performs lWT for each selected blocks. Finally, according to visual masking to adjust adaptively the relationship of the two adjacent blocks corresponding the high--frequency sub--band to embed the watermarking. Experimental results show that the proposed algorithm is simple and has good transparency and robustness.

关 键 词：彩色视频水印 整数小波变换 关系 视觉掩蔽 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]