Presence Analysis of Players in Broadcasted American Football Video

摘要

Information about who appears in video is of great importance for its retrieval. In particular, since queries about specific players seem most popular in sports video, their name can be a good index. To obtain such indexes, the first step is to efficiently analyze whether or not the player is present in an image frame. In this paper, we propose a method of presence analysis of players in sports video of American football TV programs. This method focuses on both the spatial arrangement of color regions corresponding to the player's head and body in an image frame and the framing continuity in frame sequences. It aims at finding temporal positions at which the player of a particular team is taken as a close-up or medium shot. The experimental results indicate that this method is effective and efficient.