基于小波域低频系数的自适应盲视频水印算法

设计了一种基于小波域低频系数的自适应盲视频水印算法,先用Arnold变换对水印图像进行置乱加密,再对原始视频进行分帧处理并提取亮度分量,将水印信息嵌入到亮度分量三层离散小波变换的低频系数中,嵌入强度由低频系数自适应地选取.实验结果表明,水印的安全性和不可感知性很好,在抵抗噪声干扰、帧删除、帧剪切以及滤波等多种攻击时具有良好的稳健性.

Adaptive Blind Video Watermarking Algorithm Based on Low Frequency Coefficients in Wavelet Domain

Robustness is one of the core issues of digital watermarking, the embedding strength of watermarking is the important factor affecting robustness. An adaptive blind video watermarking algorithm based on low frequency coefficients in wavelet domain has been designed. The algorithm uses firstly Arnold transform to carry on scrambling encryption for the watermarking image, then the original video is decomposed the frames, and extracts the luminance component, the watermarking information is embedded into the low frequency coefficients of the luminance component three layer discrete wavelet transform, the embedding strength is adaptively selected by the low frequency coefficients. The experimental results show that the security and the imperceptibility of the watermarking are very good, it has good robustness against many kinds of attacks such as noise interference, frame deletion, frame shear, filtering, and so on.