An Empirical Study On The Dynamic Game Process Of Table Tennis Tactical Behavior Of Speed And Path

In this paper with a constant velocity fixed single camera calibration, we transform the relationship established between points on the image plane and the motion of points on the plane, accurate speed and line for the sphere, as table tennis ball speed and path accurate calibration and provide a new analytical framework. At the same time, through the acquisition of ball speed, path information, dynamic game process of athletes, we find a cricket and a cricket connection, setting strategy matrix, the establishment of game model. This paper takes the tactics of table tennis game behavior process as the research object, based on further perfecting table tennis tactical behavior game theory system of the game process of athletes of empirical research, including the speed and path of the ball in the process of the game as well as the athlete strategy for tactical action of speed and path. By using experimental method, game analysis and other methods, this paper studies 44 game videos, establishes the game matrix of players’tactics of both sides, and solve the matrix to get the Nash equilibrium. Through the empirical research, it draws the following conclusion:1. Trough the experiment this paper confirmed-that’without calibration inside the court, a single fixed constant speed camera by the method of 3D reconstruction, accurately calculate the feasibility of average velocity speed of the sphere to better solve the problem of monitoring speed tactical strategy index effectively when players hits the ball at actual state.2. The essence of the state of the last 2 tactical behavior of the process in table tennis match is the relationship between last 2 rounds, which relates to the speed and path of table tennis, and the strategy of tactical behavior of athletes. It is the choice probability of a matrix, the core of this tactic behavior strategy matrix is the game.3. The match of table tennis is a process of dynamic game, player of both sides of which chooses their own tactical behavior in order, and knows the tactical behavior of competitors. The dynamic game process can. be divided into several sub game. A sub game is a secondary game formed locally to satisfy certain conditions in the dynamic game, Nash equilibrium of which can constitute the Nash equilibrium of the whole process of dynamic game. To solve the Nash equilibrium of a sub game can obtain Nash equilibrium of dynamic game at every point.4. The tactics of table tennis game is a zero sum game from the perspective of one game or one point, while it is not a zero sum game in a perspective of a round, but a kind of variable-sum game. This paper re-enacted the benefit of quantitative indicators of table tennis tactics.5. In the game of table tennis tactical action, player strategy is in itself neither good nor bad. The quality of strategy depends on the opponent’s tactical strategy. We can judge the merits only if both strategies constitute a strategy combination. Therefore, the player not only needs the countermeasure of consciousness, but also the competitor consciousness in tactical thinking.6. While Nash equilibrium is a combination of a stable strategy, it has the property of consensus forecast. It can provide a better basis for strategy selection.