Sports video analysis and reconstruction, especially soccer, has received much of the attention due to its popularity as well as potential commercial value. A broad range of applications such as: content retrieval and indexing, semantic event highlight and summarization or objects recognition and tracking make building sports video analysis system a hot research area. By knowing the positions and movement trajectories of the players on the field, professionals could detect semantic events, analyze the teams tactics, strength and weakness as well as produce meaningful highlights and...