摘要
提出一种基于斜率的渐变镜头检测方法,通过计算窗口内不连续帧差方差的斜率特性,结合窗口最大值法来检测渐变镜头边界;并通过对斜率特性的进一步分析,比较准确地定位渐变过程的起止位置。实验证明,本文的算法能更好地满足视频广告侦测下的渐变镜头检测要求。
A slope-based detecting method of gradual change shot is presented. By calculating the slope characteristic in variance of discontiguous frame difference in window,the method is combined with window--difference maximum method to detect the boundary of gradual change shot. The starting and ending frame of a gradual transition can also be located by further analysis of the slope curve. Experimental results show that this method has better performance in gradual shot boundary detection for video advertisements.
出处
《电视技术》
北大核心
2007年第12期67-70,共4页
Video Engineering
基金
上海市科学技术委员会资助课题(05DZ22102)
CNGI项目(CNGI-04-15-2A)
关键词
广告侦测
渐变
镜头边界检测
斜率法
advertisement detection
gradual transition
shot boundary detection
slope
