精密工学会誌
Online ISSN : 1882-675X
Print ISSN : 0912-0289
ISSN-L : 0912-0289
論文
テニスにおけるボール回転と軌道の解析
浅野 敏郎芹川 裕次石黒 和之伊藤 征嗣
著者情報
キーワード: rotation, tennis, ball, skill, image processing
ジャーナル フリー

2016 年 82 巻 2 号 p. 168-174

詳細
抄録

In this study, tennis ball rotation and trajectory are analyzed quantitatively. Fourteen dots are marked on a tennis ball to detect the ball rotation, and the markers' x-y positions are detected from high-speed camera images. First, the 3-D positions of the markers are calculated. Then, the rotation matrix is calculated by using the 3-D marker positions of successive camera frames. The rotation parameters, roll, pitch, and yaw, are calculated from the rotation matrix. The 3-D trajectories of the ball center are calculated by the stereo method. The experimental results showed drastic change of ball rotation, velocity and course at bounce and shot frames.

著者関連情報
© 2016 公益社団法人 精密工学会
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