| Along with the development of internet and improvement of people's life,there are more and more chances for people to touch with video information.It is very concerned in info-field that how to manage enormous amount of video data efficiently and quickly get video in need exactly.Content based video retrieval(CBVR) searches object through shot detection,key-frame selection, character abstraction and retrieval techniques. The result won't be disturbed by human different comprehension for different videos.Shot detection and key-frame abstraction are the bases and keys of CBVR.The difficulty of shot detection is how to detect gradual shot transition, and the difficulty of key-frame abstraction is how to make the selected frames reflect the main content of videos. Based on analyzing the actuality of shot detection,key-frame abstraction,and H.264 standard,this dissertation has proposed rapid methods for shot detection and key-frame abstraction,which are based on the information... |
