Virtual-reality tracking method and system based on CSI

Abstract

The invention provides a virtual-reality tracking method and system based on a CSI. The virtual-reality tracking method comprises the following steps: a data receiving step: a service processing terminal receives channel state information sent by multiple data terminals, multiple data terminals receive a WiFi data packet sent by wearable equipment, and defines the received WiFi data packet as the channel state information; a data processing step: the service processing terminal estimates a displacement value of a target between the packets by assessing transmitting angles of all WiFi data packet propagation paths and attenuation values of continuous packets, thereby obtaining the motion trail of the target. The method provided by the invention has the advantages that commercial WiFi equipment is embedded in the head-mounted equipment, the complexity is lowered, and the cost is greatly lowered, the position information of the target can be estimated by using ubiquitous WiFi signals, the VR target locating and tracking with high precision and high robustness is realized.

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

Images