Video semantics exploration for indexing and retrieval

Video semantic concepts exploration is a fundamental problem in a video indexing and retrieval. It has a long history of investigation since early days till recent achievements. The challenges lie in bridging the gap between low level features and semantic level ones. To stand on the thoroughly situation, video semantic concepts exploration for indexing and retrieval purposes evolution from conventional methods to the state-of-the-art ones will be reviewed. The main contribution is to unify concepts involved and evolution in this interesting topic.