Study On Application Of Video Technology For Analyzing Technical-Tactics Of Table Tennis Match

According to professional measure, speed of spin and running of Table Tennis is the main factors to decide who can win the Table Tennis match and whether the match is attractive. So the quick computing result of speed of Table Tennis plays an important role for athletes and coaches. The evolution of colloid covered on Table Tennis racket impulse greatly the development of technique and tactics of Table Tennis. Manufacturers of Table Tennis racket need a valid way to test the performance of new colloid. So the thesis did correlative applying research. We attained the support of Tianjin 729 Sports Equipment Development Co., Ltd and we are declaring the subject of Olympic Games tackle key problem.Nowadays, there are still very few correlative researches of Table Tennis match combining the datum collection of the technique and tactics and the capture of video of Table Tennis match. The positions within video stream can't be seeked quickly and automatically to analyze the technique and tacticsh. So we present a novel scheme for real-time analyzing technique and tactics using computer video technology in this thesis. It focused on video preview and capture, frame grabbing, and quick position seeking within video stream to analyze the technique and tactics of Table Tennis match. The software is developed using the technology of DirectX of source code based, VFW and video codec technology, which can operate video hardware device and get many kinds of video data easily and efficiently. The result shows that it is very real-time, efficient and robust.Currently, There are lots of methods of object detection, but it's still very few correlative applyings in running Table Tennis detection. Low speed camera pictures and high speed camera pictures were detected separately. And the running speed of Table Tennis by the low speed camera pictures can be worked out. For the high speed camera pictures we can work out the running speed, rotating speed and hitting depth of Table Tennis. We combine background subtraction, color matching and shape matching arithmetic to an improved detection method to detect the running Table Tennis, which can divide the running table tennis availably and integrality. We used formulas and methods of geometry to compute the speed and the depth of Table Tennis. The result indicates that it is very effective and robust.This thesis presents a novel scheme for real-time analyzing technique and tactics of Table Tennis match using computer video technology and object detection technology. And aprototype system was implemented in VC++. In order to verify the applied methods mentioned above, lots of experiments and tests were carried out on real Table Tennis match. And the results show that the applied methods of the computer video technology provide a significantly assistant effect for the coach to analyze the technique and tactics of Table Tennis match.