Results 141 to 150 of about 830,564 (185)

Quantitative analysis of tennis ball rotation and trajectory

2015 IEEE 24th International Symposium on Industrial Electronics (ISIE), 2015
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.
Toshio Asano, Yuji Serikawa, Seiji Itoh
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The trajectory of a ball in lawn bowls

American Journal of Physics, 1998
The main objective in lawn bowls is to bowl a ball along a curved trajectory on a smooth grass surface so that it stops closer to the jack (a small white ball) than the opponent’s ball. The curvature of the path is induced by shaping the ball so that one side is heavier than the other.
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Trajectory calculations by the rolling ball model

Journal of Chemical Education, 1985
Proposes as an exercise in chemical kinetics the construction of a set of programs that perform the calculation and graphical representation of classical trajectories for a triatomic system on a LEPS surface using the model of the rolling ball.
G. M. Fernandez, J. A. Sordo, T. L. Sordo   +2 more
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Rebound model of table tennis ball for trajectory prediction

2010 IEEE International Conference on Robotics and Biomimetics, 2010
A flying model and a rebound model are presented for the trajectory prediction of table tennis ball in this paper based on the assumption that the ball would fly without spin before rebound. The analytic solution for the flying model is also given. The rebound model in Z axis is based on height loss coefficient, and a learning method based on one order
Zhengtao Zhang, De Xu, Ping Yang
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On a Ball’s Trajectory Model for Putting’s Evaluation

2012
The main goal of the present work is to draw conclusions about the influence of constraints such as different striking spots on the presence of a ramp, in the performance of golf putting while determining if the player’s performance is indeed unique and presents a signature for each of the 3 expert players in study.
Gonçalo Dias, Rui Mendes, Micael S. Couceiro, Carlos M. Figueiredo, J. Miguel A. Luz   +4 more
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3D reconstruction of ball trajectory from a single camera in the ball game

2015
The 3D ball trajectory provides us quantitative technical or tactical information (e.g. the ball speed of serve). The 3D trajectory can be reconstructed by multiple camera system or single camera system. The single camera 3D reconstruction method is better than the multiple camera one, because it is convenient for the video from television.
Lejun Shen, Qing Liu, Lin Li, Haipeng Yue   +3 more
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Optical Trajectories and the Informational Basis of Fly Ball Catching.

Journal of Experimental Psychology: Human Perception and Performance, 2005
D. M. Shaffer and M. K. McBeath (see record 2002-02027-006) plotted the optical trajectories of uncatchable fly balls and concluded that linear optical trajectory is the informational basis of the actions taken to catch these balls. P. McLeod, N. Reed, and Z.
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On the control of the "ball and beam" system: a trajectory planning approach

Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187), 2002
An approximate linearization, in combination with a suitable off-line trajectory planning, is proposed for the equilibrium to equilibrium regulation of the popular "ball and beam" system. The results are illustrated by means of digital computer simulations.
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Hand Trajectories for Catching Balls on Horizontal, Linear Trajectories

2023
Ryan Arzamarski, Steven J. Harrison, Claire F. Michaels   +2 more
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Soccer ball trajectory simulation

Journal of Biomechanics, 2006
S. Barber, S.J. Haake, M.J. Carré
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