Cooperative construction method for enhancing realistic table-tennis system based on real rackets

Abstract

The invention relates to a cooperative construction method for enhancing a realistic table-tennis system based on real rackets. The method comprises the following steps of: detecting and tracking a real table-tennis racket by utilizing the color characteristics according to a video image acquired by the system; designing and realizing the virtual-real three-dimensional registration of a virtual scene and a real scene, mapping the virtual scene to a video image coordinate system of the real rackets, participator users and real environment; designing and realizing the collision detection between a virtual table-tennis ball and objects, such as the real rackets, a virtual table-tennis table, a virtual table-tennis net, and the like according to the motion information of the real rackets and confirming and representing the motion trajectory of the virtual table-tennis ball after collision; and providing a finite state machine and a message-processing mechanism, controlling the conversion of various states of the table-tennis system in the operation process and ensuring a plurality of users to have the same table-tennis motion experience. The cooperative construction method can be widely applied to the fields, such as interactive digital entertainment, sports research, training simulation, remote education and training, and the like.

Description

Technical field [0001] The invention relates to the fields of virtual reality, augmented reality and computer graphics, in particular to a method for constructing a cooperative augmented reality table tennis system based on a real racket. Background technique [0002] Augmented Reality (AR) is a further expansion of virtual reality. It uses necessary equipment to make computer-generated virtual objects (Virtual Object, VO) coexist with the objective real environment (Real Environment, RE). In the augmented reality system, the user is presented with an augmented reality environment in which virtual objects and the real environment are integrated from the senses and experience effects. Augmented reality has the basic characteristics of virtual and real combination, real-time interaction, and three-dimensional registration. [0003] Collaborative Augmented Reality (CAR) technology is a combination of augmented reality technology and network technology. It is an important part of augme...

AI Technical Summary

Problems solved by technology

In 2004, researchers at the Finnish VTT Technology Research Center used collaborative augmented reality technology to simulate table tennis sports. This system enables users who use real table tennis rackets to face the camera and play cooperatively with users in different places connected through the network. However, the system is still Artificial markers need to be pasted on table tennis rackets

However, what is shown to the user in this system is a completely virtual sports environment. The user cannot see the images of distant relatives and friends, and cannot experience the feeling of playing with real friends. The main targets tracked by the table tennis system are sports caps and handles. Doesn't track real ping pong paddles

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