A method of sparring training for ball games based on motion trajectory

Abstract

The invention discloses a ball game serving sparring method based on motion trajectory, which comprises the following steps: Step 1: Acquiring the motion trajectory of the racket when serving a plurality of ball games; Step 2: Extracting feature vectors from the multiple motion trajectories collected in Step 1 ; Step 3: Aiming at the feature vector obtained in step 2, train the particle swarm-support vector machine model; Step 4: search the trajectory of the racket to be evaluated, extract the trajectory of the ball from the trajectory according to the characteristics of the trajectory of the ball, and input it in step 3 The trained particle swarm-support vector machine model is used to evaluate whether the serve is successful or not; the method of the present invention realizes a more objective technical analysis of the ball player's serve, and helps coaches and athletes find irregular actions or mistakes Action, improve the efficiency of physical training, improve sports technology, so as to achieve the purpose of auxiliary training.

Description

technical field [0001] The invention relates to the field of three-dimensional motion processing, in particular to a ball game serving sparring method based on a motion track. Background technique [0002] In tennis, serving is one of the most critical basic skills. Its technical action can be completely implemented by the player himself without confrontation with the opponent, and is an important means of scoring in tennis. In a tennis serve, the racket's optimal position, trajectory, height and speed are very important. [0003] Currently, Olivier Girard et al. studied the effect of knee movement on tennis flat serve by limiting the extension angle of the knee during the serve. Ikram Hussain et al. conducted in-depth kinematic analysis of various parts of the body in order to improve the serving speed of tennis balls. Among the many external factors, Pedro C.Mendes et al. believe that wind has a greater impact on the success rate of serving, and have carried out detaile...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned serving training mechanism has problems such as complex structure, inconvenient use, and inaccurate testing. Therefore, in view of this problem, it is necessary to propose a ball game training method based on the trajectory to achieve objective and effective ball game training.

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