非压缩视频图像多重数字水印隐藏方法仿真

摘要

为了更好地解决多媒体信息的版权保护问题,需要进行非压缩视频图像多重数字水印隐藏方法的研究.但是采用当前方法进行水印隐藏时,无法保障水印的安全性,存在水印隐藏效果差的问题.为此,提出一种基于改进置乱变换的非压缩视频图像多重数字水印隐藏方法.上述方法先利用小波变换对原始视频图像进行多层级分解,并将混沌数字水印叠加在不同级别分辨率的高频小波系数中,在此基础上进行逆小波变换生成水印图像,选择基于队列置乱变换的变换参数作为私有密钥,将嵌人水印的图像二值序列转换成灰度值,依据置乱变化的逆变换方法将图像复原.仿真证明,所提方法可以有效地保障视频图像数字水印的抗攻击性,具有较高的稳健性.%Based on the modified scrambling transformation,a hiding method of multiple digital watermarking of non-compressed video image is proposed.Firstly,wavelet transform is used to carry out multi-level decomposition for original video image,and chaos digital watermarking is superimposed in high-frequency wavelet coefficient with different levels of resolution ration.Then,inverse wavelet transform is carried out to generate watermarking image,and the transformation parameter based on queen scrambling transformation is selected as a secret key.Moreover,binary sequence of image embedding watermarking is transformed into gray value.Finally,the image is recovered according to inverse transformation of scrambling transformation.Simulation proves that the method can guarantee antiattacking of the digital watermarking of video image effectively.It has strong robustness.