A csi-based virtual reality tracking method and system

Abstract

The present invention provides a virtual reality tracking method and system based on CSI. The virtual reality tracking method includes the following steps: a data receiving step: a service processing terminal receives channel state information sent by a plurality of data terminals, and a plurality of said data terminals receive The WiFi data packets sent by the wearable device, and the received WiFi data packets are defined as channel state information; data processing steps: the service processing terminal will estimate by evaluating the transmission angle of all WiFi data packet propagation paths and the attenuation value of continuous packets The displacement value of the target between the package and the package, so as to obtain the trajectory of the target. The beneficial effects of the present invention are: the present invention only embeds the commercial WiFi device in the head-mounted device, which not only reduces the complexity but also greatly reduces the cost, and realizes high precision by using the ubiquitous WiFi signal to estimate the position information of the target , Robust VR target positioning and tracking.

Description

technical field [0001] The invention relates to the technical field of wireless perception and human-computer interaction, in particular to a CSI-based virtual reality tracking method and system. Background technique [0002] Today, it is still a complicated process to experience a virtual reality environment as you like, because existing VR experiences either require special equipment, such as using infrared cameras to track head-mounted devices or hand-held controllers. Or it is required to experience in a specific environment, such as a specific area, etc. These restrictions greatly reduce the user experience comfort. For a real VR experience, position tracking can be achieved at any time and any place, and the displacement can be updated in time. [0003] Existing VR tracking systems are mainly divided into two categories, one is an outside-in position tracking system, and the other is an inside-out tracking system. As far as the outside-in system is concerned, the tra...

AI Technical Summary

Problems solved by technology

But such systems also have certain defects. For example, no matter where users experience VR, they need to install unique hardware and peripherals. That is to say, if a person wants to experience VR anywhere at home, he must be in Infrared cameras must be installed everywhere in the home, and must be within 2m of the infrared camera

In addition, this type of system will also be affected by occlusion and lighting. If the infrared camera is blocked by furniture or the light is very dark, the system will not work.

For inside-out systems, this type of system uses tracking algorithms based on true color and depth perception in head-mounted devices to achieve positioning and tracking. Increasing the number of cameras in the headset greatly increases the complexity and makes it difficult to recognize transparent or less textured objects

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