峰度特征值在视频水印中的应用

提出一种基于峰度的视频水印新算法。峰度是一个能表征图像是否呈正态分布的特征值。选择峰度较小的视频帧，对亮度空间分块后实施离散余弦变换，在中频系数中嵌入水印。实验证明，该算法对有损压缩有较强的健壮性，较好的透明性。能经受添加噪声、剪切、视频格式转换及丢帧等常见视频信号处理及攻击。

Application of kurtosis eigenvalue in video watermarking

This paper proposes a new algorithm of video watermarking based on kurtosis and DCT.Kurtosis is an eigenvalue of normal distribution of the image.Choose the video frames with small kurtosis,brightness space into blocks before the discrete cosine transform,embedded the middle frequency coefficients into watermarking.The result demonstrates that the algorithm is robust and transparent to lossy compression against common signal processing manipulations and attacks,such as noise,cut and conversion etc.