基于DirectShow的镜头检测系统

Shot Detection System Based on DirectShow

镜头检测是视频检索中最基本也是最重要的一项内容,在讨论了如何利用D irectShow获取视频单帧图像的基础上,采用“滑动”窗口法来实现镜头的切变与渐变的检测,实现了基于D irectShow的镜头检测系统.实验结果表明,系统对镜头切变的检测取得了良好的效果,同时,也可以对滑动、淡入淡出、擦除等渐变进行检测.系统采用了D irectShow作为对视频的支持,具有良好的通用性及人机交互界面,满足了视频检索系统对界面的要求.

Shot detection is the most fundamental operation and very important step in content-based video retrieval. After discuss how to retrieval every frame from video data, the sliding window algorithm is adopted to detect both abrupt and gradual shot. At last, a shot detection system is realized based on DirectShow. The experiment results show the abrupt detection is excellent and the gradual shot such as sliding, fade in and fade out, wipe, etc. , can also be detected. As DirectShow is introduced to deal with video, system is universal and has good interface. It can meet requires of content-based multimedia retrieval system.