System for precision measuring and predicting table tennis track and system operation method

Abstract

The invention discloses a real-time processing system for accurately measuring and predicting the flight path of a table tennis ball at high speed which is composed of more than two cameras, a synchronization device controlling a plurality of cameras to synchronously acquire images, an image data acquisition transmission device, a main control computer, system environment and an external display screen; wherein, the synchronization device is used for controlling a plurality of cameras to synchronously acquire images, vision software operates in the system environment, the system can accurately measure the flight path of the table tennis ball at high speed and has the real-time processing function, and is applied to automation control systems, training of table tennis athletes, analysis of batting data, automatic referee system for table tennis game, network live broadcast and television relay.

Description

technical field [0001] The invention relates to real-time detection, positioning, tracking and trajectory prediction of fast-moving table tennis balls, as well as a device for real-time display of three-dimensional virtual scenes and playback of historical records for the trajectory of table tennis balls. The invention provides a method and system for quickly and accurately estimating the flight trajectory of a fast-moving table tennis ball image. Background technique [0002] The "Hawkeye" system has been used in referees and simulation demonstrations of tennis matches for six or seven years. It has been widely promoted in tennis broadcasts, and has played a very positive role in the study of tennis and the fairness of tennis games. The official name of the "Eagle Eye" system is "Instant Replay System", which consists of 8 or 10 high-speed cameras, four computers and a large screen. The amount of image data collected by the "Eagle Eye" system is very large, and the calcula...

AI Technical Summary

Problems solved by technology

The table tennis ball is very small, the surface of the table tennis ball and the table tennis table are very smooth and easy to reflect light, and the stroke of the table tennis ball is very short. When moving at high speed (3-5m / s), the entire effective stroke lasts only about 0.5s, making accurate detection and Recognizing the ping pong task is very difficult

And because the table tennis ball is relatively light and thin, its flight trajectory is more affected by many factors such as the rotation of the table tennis ball, air temperature, humidity conditions, and on-site ventilation, so it is difficult to establish a general motion model. and forecasting poses great difficulty

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