Plays from Motions for Baseball Video Retrieval

There are many videos about sports. There is a large need for content-based video retrievals. In sports videos, the motions and camera works have much information about shots and plays. This paper proposes the same play retrieval method using the similar motion retrieval on videos. We can retrieve the similar motion parts based on motions shown in videos using the space-time images describing the motions. Using a finite state model of a play, we can retrieve the precise point of pitches from the pattern of estimated typical motions. This paper describes the method and the experimental results.