摘要
定义了用于渐变边界检测的累积帧差,提出了一种基于高斯模型的镜头边界检测新方法,对突变边界和渐变边界分别采用不同参数的高斯模型,实现了阈值的自适应选择,克服了现有的双阈值比较法中下边界阈值难以自适应设定的困难.初步实验结果表明该方法能准确地检测突变和渐变边界.
For the detection of shot boundary in a video sequence,the selection of a proper threshold for computing discontinuity values is an important and difficult problem. A formula for calculating discontinuity values is defined, then a new Gaussian model based technique is proposed, which needs not setting low boundary threshold. It is a kind of improvement of twin-comparison method. experimental results demonstrate that the proposed method enables to locate boundaries of transitions and cuts exactly and quickly. Primary gradual
出处
《光子学报》
EI
CAS
CSCD
北大核心
2005年第10期1597-1600,共4页
Acta Photonica Sinica
基金
西安市科技攻关计划(GG9907)项目资助
