摘要
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。
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.
出处
《计算机工程与应用》
CSCD
北大核心
2009年第14期90-92,共3页
Computer Engineering and Applications
基金
国家自然科学基金No.60373062
教育部科研重点项目(No.03092)
湖南省教育厅科研基金项目(No.05C020)~~
关键词
视频水印
峰度
离散余弦变换
透明
健壮
盲检测
video watermarking
kurtosis
Discrete Cosine Transform（DCT）
transparent
robustness
blind-detection
