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Ball game serving and training method based on movement track

A technology of motion trajectory and ball games, which is applied in image data processing, instruments, character and pattern recognition, etc., and can solve problems such as inconvenient use, complex structure, and inaccurate testing

Active Publication Date: 2017-09-19
QIDONG PLANT SERVICE VALVE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Ball game serving and training method based on movement track
  • Ball game serving and training method based on movement track
  • Ball game serving and training method based on movement track

Examples

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Embodiment Construction

[0051] Such as Figure 1~5 As shown, the ball game serving sparring method based on the motion track of the present embodiment is an example with tennis serving, as Figure 5 shown, including the following steps:

[0052] Step 1: Obtain the movement trajectory of the racket apex when the tennis ball is served through the three-dimensional infrared motion capture system;

[0053] Step 2: extracting feature vectors from the motion trajectory collected in step 1;

[0054] Step 3: training the particle swarm-support vector machine model (referred to as PSO-SVM model) for the feature vector obtained in step 2;

[0055] Step 4: Search the trajectory of the vertex 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, input the trained PSO-SVM model, evaluate whether the ball is successful or not, and give technical guidance to the tennis ball Opinion.

[0056] Specifically, in step 1, ...

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Abstract

The invention discloses a ball game serving and training method based on movement tracks; the method comprises the following steps: 1, obtaining movement tracks of a racket when a ball is served in various ball games; 2, extracting characteristic vectors from the plurality of movement tracks collected from step1; 3, training the characteristic vectors obtained by step2 so as to obtain a particle swarm-support vector machine model; 4, searching a to-be evaluated racket movement track, extracting a serving track from the movement tracks according to serving track characteristics, inputting the serving track into the particle swarm-support vector machine model trained in step 3, and evaluating whether the serving has succeeded or not. The method can more objectively realize ball game player serving technical motion analysis, can help coaches and players to find out irregular motions or error motions, thus improving sports training efficiency, improving sports skills, and assisting the training process.

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...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/223G06K9/62
CPCG06T7/0002G06T7/223G06T2207/30241G06T2207/30221G06T2207/10048G06T2207/10016G06F18/214G06F18/2411
Inventor 韩永华汪亚明周志湖马可
Owner QIDONG PLANT SERVICE VALVE FACTORY