Abstract: A video analysis system for analyzing video of a swing motion including an imaging unit that records video of the swing motion, an impact detection unit, a video display unit, a control unit, and a personal computer. The control unit activates functions, remotely from the personal computer, and performs functions, including receiving the video of the swing motion, receiving an impact detection signal, recording the video of the swing motion, determining an impact time based on the impact detection signal and recording images of the swing motion for a predetermined time period that includes the impact with the ball, displaying the video of the swing motion on the video display unit, slowing down replay speed of the video of the swing motion to be lower than an actual speed of the recorded swing, temporarily stopping the video, and switching video replay between a forward mode and a backward mode.

Abstract: A video analysis system of swing motion includes an imaging unit that images video of swing motion, an impact detection unit that detects impact, a control unit and a video display unit. The control unit has (a) a function of receiving the video of the swing motion from the imaging unit; (b) a function of receiving an impact detection signal from the impact detection unit; (c) a function of recording the video of swing motion received from the imaging unit into the control unit; and (d) a function of, when the control unit records into the control unit the video of the swing motion received from the imaging unit, determining an impact time based on the impact detection signal received from the impact detection unit, to record images of the swing motion for a predetermined time period containing the impact time.