基于三维虚拟动作再现系统对恩奎斯特和莫亚发球技术的对比分析

对ATP冠军巡回赛成都公开赛半决赛中2名运动员托马斯·恩奎斯特和卡洛斯·莫亚的发球技术进行分析。采用三维摄像解析法获得运动员发球技术相关运动学参数，根据研究目的将动作划分为抛球举拍阶段、向后挥拍阶段、向前挥拍击球阶段，获取世界优秀男子网球运动员发球技术各阶段的相关运动学参数；利用沉浸式三维虚拟现实技术对获得的运动学数据进行重建，通过360°的旋转再现观察，以三维动画的形式进行运动学比较分析。结果显示恩奎斯特动作技术更合理、更规范，值得网球运动员借鉴。

Analysis of Enqvist And Moya's Tennis Serve Technique Based on Virtual Reality Technology

The tennis serve technology of the two players, Thomas Enqvist and Carles Moya, in the semifinals of 2011 Chengdu Open-ATP Champions Tour were filmed and analyzed with three-dimensional video analysis.According to the purpose and need for this study and combined with the actual technical movements, the serve technology was divided into three stages as follows: throwing ball rising racket stage, backward swinging stage and forward swinging hit stage.Then, kinematic analysis for each stage is condected.Based on the data of kinematic analysis, a three-dimensional model of the human body movement, with the diagnosis of sports biomechanics, the computer realization of 3D dynamic display reproduction is established.The method can simultaneously output three-dimensional images, data and curve, through the three-dimensional image, it can be directly used to correct training plan through the visual feedback;it is vivid and accurate reproduction of the athletes'trajectory angle information by data and curves.The kinematics characters of high-quality tennis serve were presented to provide the basis for tennis training and match.