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

A technology of precise measurement and operation methods, applied in image data processing, optics, instruments, etc., can solve the problems of short table tennis stroke, difficulty in establishing a motion model, accurate detection and identification of table tennis tasks, etc., and achieve good application prospects Effect

Inactive Publication Date: 2009-06-17
ZHEJIANG UNIV
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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 pon...

Method used

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

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Embodiment Construction

[0060] Below in conjunction with accompanying drawing, describe in detail the embodiment of the method and system of the present invention utilizes multi-camera high-speed real-time table tennis positioning, trajectory generation and prediction. In this embodiment, the system can control two or more cameras to simultaneously collect table tennis game scene maps under different viewing angles at high speed, locate the three-dimensional space position of the table tennis ball according to the image information, calculate its trajectory, and carry out three-dimensional virtual space simulation. The scene reappears.

[0061] figure 1 A block diagram of the hardware structure of the system is given. The whole system consists of two or more cameras 1, a hardware synchronization device 2 that controls multi-cameras to acquire pictures synchronously, an image data acquisition and transmission device 3, a main control computer 4 and a system environment for visual software operation 5 ...

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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...

Claims

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Application Information

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IPC IPC(8): G03B15/16G06T7/20G06T7/00
Inventor 章逸丰熊蓉褚健刘勇
Owner ZHEJIANG UNIV
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