基于小波变换的数字多媒体视频水印盲检测方法

A Blind Detection Method of Digital Multimedia Video Watermark Based on Wavelet Transform

以常规的水印特征作为依据,构建视频水印特征决策表,确定视频水印特征,采用小波变换技术分解视频水印图像,基于分解后的结构,置换处理像素点,得到水印信息特征,将水印属性特征与信号特征作为发射识别机的输入,经过发射识别机处理后,获得检测结果;实验结果表明:设计的基于小波变换的盲检测方法在面对噪声攻击和剪切攻击时,视频水印图像没有遭到破坏,检测前后水印图像误差小。

Based on the conventional watermark characteristics,the video watermark characteristics decision table is constructed to determine the video watermark characteristics.The wavelet transform technique was used to decompose the video watermark image and replace the pixels based on the decomposed structure to obtain the watermark information features.The watermark attribute features and signal characteristics are taken as the input to the emission recognition machine to obtain the detection results.The experimental results show that when the blind detection method based on wavelet transform is faced with noise attack and clipping attack,the video watermark image is not damaged,and the error of watermark image before and after detection is small.