| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball-trajectory measuring apparatus in which a CCD camera is installed easily, by which a ball trajectory can be measured stably without being influenced by weather or the like, whose calibration is easy, and by which time-series data on the position coordinates of a flying ball can be measured with satisfactory accuracy. SOLUTION: The ball-trajectory measuring apparatus is provided with at least two CCD cameras 1, 2 which are situated on a straight line connecting a striking position A to a target position B and which are installed at the back of the striking position A and at the front of the target position B; a control unit which controls photographing timings by the CCD cameras 1, 2; and a computing part which computes the position coordinates of the ball by a triangulation technique, on the basis of a pair of image data photographed simultaneously by the CCD cameras 1, 2 and on the basis of positions, optical- axis directions and angles of view of the CCD cameras 1, 2.
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