Flight parameter measurement device and flight parameter measurement method
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机译：飞行参数测量装置及飞行参数测量方法
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摘要
The image shooting section 201 continuously shoots the ball in flight with the camera. The image matching unit 203 generates a first registered ball image in which the dimension of the first ball image is made coincident with the dimension of the second ball image in the camera coordinates. The 3D model construction unit 204 constitutes a 3D model of the first registered ball image obtained by converting the camera coordinate of the generated first registered ball image into the world coordinate of the generated first registered ball image. The virtual rotation unit 205 virtually rotates the 3D model of the first registered ball image constituted in the world coordinates using previously estimated initial rotation parameters and rotation matrix information. The registered image generation unit 206 generates a registered image of the first registered ball image by using the camera coordinates of the visible coordinate system obtained by converting the world coordinates of the visible surface photographed from the camera among the 3D models of the first registered ball image after the rotation, And generates a registered ball image. The difference calculation unit 207 extracts a second comparison ball image corresponding to the second registered ball image from the second ball image, and calculates a difference between the second registered ball image and the second comparison ball image . The rotation parameter determination unit 208 repeats the virtual rotation of the 3D model, the generation of the second registered ball image, and the calculation of the difference by changing the initial rotation parameter, and calculates the rotation parameter As a rotation parameter of the ball.
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