Table tennis ball positioning method and system based on mapping analytical pre-processing

Abstract

The invention discloses a table tennis ball positioning method and a positioning system based on mapping analytic pre-processing. The system comprises a module for establishing a mapping plane coordinate system, a module for acquiring a mapping analytical pre-processing image and judging whether a table tennis ball is located within a mapping region or not, a module for calculating the positions of the table tennis ball in various mapping images and converting the coordinate system and a module for calculating spatial position of the table tennis ball. According to the positioning method and the positioning system provided by the invention, under the precondition of avoiding the use of a curtain, grayscale cameras can shoot and acquire images under a non-solid color background, and mappingpositions of an object on the images can be accurately judged by virtue of background pre-processing means, so that the positioning of the table tennis ball is implemented in accordance with the positions of the multiple groups of grayscale cameras as well as the mapping positions of the corresponding images. With the application of the positioning method and the positioning system, the problem that a table tennis motion system based on network of things cannot simply and effectively calculate the real-time position of a table tennis ball under a motion state can be solved.

Description

technical field [0001] The invention belongs to the technical field of intelligent table tennis, in particular to a table tennis positioning method and system based on mapping analysis preprocessing. Background technique [0002] At present, there are two main types of solutions for table tennis motion positioning, one is the computer vision analysis method, and the other is the signal-triggered judgment method. [0003] The computer vision analysis method mainly collects the video of table tennis in real time through multiple high-speed high-definition cameras, performs target recognition and spatial positioning on each image in the video to form data, and then calculates the position of the table tennis through filtering and tracking. The disadvantage is the high computational complexity. [0004] The signal trigger judgment method is to obtain the vibration signal generated by the impact of the table tennis ball through the piezoelectric sensor installed on the table ten...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem that the table tennis sports system based on the Internet of Things cannot simply and effectively calculate the real-time position of the table tennis ball in motion, and proposes a table tennis positioning method and system based on mapping analysis preprocessing

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