一种用于体育运动仿真分析的“虚实”对比方法

A Virtual-Real Comparision Method Used for Sport Simulation and Analysis

人体运动的计算机仿真与分析在体育运动分析领域有着广阔的应用前景.提出了一种用于体育运动仿真分析的“虚实”对比方法.能将仿真分析系统中虚拟运动员的标准运动与实际运动员的训练视频显示在同一个屏幕上,并自动调整虚拟运动员的运动显示,使观察虚拟运动员的视点和实际视频拍摄的视点保持一致.这样,就可以直观、准确地比较出虚拟运动员执行的标准动作与视频中所记录动作之间的差异,帮助运动员提高训练效果.

The simulation and analysis of human motion is a popular issue in simulation area and it is highly valued in sport motion training and analysis. Video is the main record form of athlete train. It is significant if we put the athlete motion of video and the normal motion of 3D virtual athlete of simulation system into the same screen because it is easy and accurate to compare the difference between them. And it will greatly benefit the athletes so that they can compare their motions with the normal motion of 3D virtual athlete and improve their competition level. While the motion of 3D virtual athlete can be observed from different viewpoints, the appearance will be different. So it is crucial to ensure that the viewpoint of virtual camera in simulation system and that in the video are the same. To solve the problem, a new concept of “virtual-real” comparison is put forward. Virtual here refers to the simulated motion and real is the sport video. The virtual-real comparison technique is to get the camera information from video and to adjust the view point of the virtual camera of 3D simulation system automatically. This technique is implemented in a trampoline sport simulation system and sound results are obtained. The use of virtual-real comparison technique extends the function of the sport simulation system and has greatly benefited the athlete in training.