一种基于形态学操作的新闻标题条检测算法  

A Caption Detection Algorithm Based on Morphological Operation

作　　者：姜帆[1] 章毓晋[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《电子与信息学报》2003年第12期1647-1652,共6页Journal of Electronics & Information Technology

基　　金：国家自然科学基金项目(60172025)资助课题

摘　　要：该文提出一种基于形态学操作的新闻标题检测算法.该方法利用了新闻标题条出现的时空特征,在镜头分割的基础上,采取了分类处理的方式和形态学的滤波操作,实现了对渐变标题的检测和在全局变化剧烈情况下的标题检测,并具有定位准确、规范化的特点.利用MPEG-7测试数据集进行的实验验证了该算法的优越性.An algorithm of caption detection in news video is proposed in this paper. It makes use of space and time characters of the captions appearing in the video. On the basis of shot boundary detection, this method applies morphological operation and different filter strategies according to different cases. It achieves good results by experiments using MPEG-7 video testing data, especially caption detection in the case of gradual transition and heavy noises on the background.

关 键 词：形态学操作 新闻标题条 检测算法 渐变标题 MPEG—7 新闻视频检索 字符识别 

分 类 号：TN919.8[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]