Nonchronological video synopsis and indexing


The amount of captured video is growing with the increased numbers of video cameras, especially the increase of millions of surveillance cameras that operate 24 hours/day. Since video browsing and retrieval is time consuming, most captured video is never watched or examined. Video synopsis is an effective tool for browsing and indexing of such a video. It provides a short video representation, while preserving the essential activities of the original video. The activity in the video is condensed into a shorter period by simultaneously showing multiple activities, even when they originally occurred at different times. The synopsis video is also an index of the original video by pointing to the original time of each activity. Video synopsis can be applied to create a synopsis of endless video streams, as generated by webcams and by surveillance cameras. It can address queries like “Show in one minute the synopsis of this camera broadcast during the past day.”

This process includes two major phases:

1.A conversion of the video into a database of objects and activities.

2.Objects prioritization: categories will be elaborated in this paper.

Generating the video synopsis as a response to the objects prioritization.