Abstract
This paper presents a novel ball tracking method in volleyball videos and its application to the estimation of events such as receive and toss. By utilizing characteristics that the ball moves parabolically in the volleyball videos, the proposed method calculates conceivable ball trajectories based on tracked player positions. Then, the proposed method realizes not only the ball tracking but also the detection of players who contact the ball, which is very important for the event estimation. Furthermore, we discuss the application of the proposed method to the event estimation based on volleyball rules. The effectiveness of the proposed method is verified in the experiments.
